---
title: "Changes to POST /create-conversation-flow"
method: POST
path: "/create-conversation-flow"
---

# Changes to POST /create-conversation-flow

`POST /create-conversation-flow`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 14 of 28 revisions.

- **2026-05-28** `40402ca870b9` — 8 warning, 16 info
- **2026-05-18** `6342a9990108` — 4 info
- **2026-05-08** `7dd16ddf69d8` — 8 breaking, 4 warning, 4 info
- **2026-05-07** `f1a0d7c1e36c` — 37 breaking, 45 info
- **2026-04-28** `1b4a9d84942a` — 4 breaking, 29 warning, 33 info
- **2026-04-20** `8ee53928bf31` — 6 breaking, 31 warning, 63 info
- **2026-04-01** `56de19127afb` — 2 breaking, 8 warning, 22 info
- **2026-03-19** `3aa6f6e028ef` — 54 warning, 62 info
- **2026-03-17** `424df3aa7900` — 102 breaking, 203 warning, 81 info
- **2026-03-09** `8fbf8c54a142` — 22 breaking, 11 warning, 67 info
- **2026-02-23** `bcff6899fa2a` — 104 info
- **2026-02-10** `0bf5cea5dfcc` — 6 breaking, 12 warning, 18 info
- **2026-02-06** `dfad228ab4a4` — 8 breaking, 28 info
- **2026-01-23** `427e77039f39` — 4 info

## Changes

- **2026-05-28** `40402ca870b9` — 8 warning, 16 info
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version/oneOf[subschema #2]/` from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version/oneOf[subschema #2]/` from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/TransferCallTool]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version/oneOf[subschema #2]/` from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[subschema #2]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version/oneOf[subschema #2]/` from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version/oneOf[subschema #2]/` from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version/oneOf[subschema #2]/` from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/TransferCallTool]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version/oneOf[subschema #2]/` from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[subschema #2]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version/oneOf[subschema #2]/` from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ExtractDynamicVariablesNode]/allOf[subschema #2]/enable_typing_sound`
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/ExtractDynamicVariableTool]/enable_typing_sound`
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/ExtractDynamicVariablesNode]/allOf[subschema #2]/enable_typing_sound`
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/ExtractDynamicVariableTool]/enable_typing_sound`
  - added the optional property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ExtractDynamicVariablesNode]/allOf[subschema #2]/enable_typing_sound` to the response with the `201` status
  - added the optional property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/ExtractDynamicVariableTool]/enable_typing_sound` to the response with the `201` status
  - added the optional property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/ExtractDynamicVariablesNode]/allOf[subschema #2]/enable_typing_sound` to the response with the `201` status
  - added the optional property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/ExtractDynamicVariableTool]/enable_typing_sound` to the response with the `201` status
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/TransferCallTool]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[subschema #2]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/TransferCallTool]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[subschema #2]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
- **2026-05-18** `6342a9990108` — 4 info
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/flex_mode`
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/flex_mode`
  - added the optional property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/flex_mode` to the response with the `201` status
  - added the optional property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/flex_mode` to the response with the `201` status
- **2026-05-08** `7dd16ddf69d8` — 8 breaking, 4 warning, 4 info
  - request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/TransferCallTool]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version` list-of-types was narrowed by removing types `number` from media type `application/json`
  - request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[subschema #2]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version` list-of-types was narrowed by removing types `number` from media type `application/json`
  - request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/TransferCallTool]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version` list-of-types was narrowed by removing types `number` from media type `application/json`
  - request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[subschema #2]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version` list-of-types was narrowed by removing types `number` from media type `application/json`
  - response property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/TransferCallTool]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version` list-of-types was widened by adding types `integer and string` to media type `application/json` of response `201`
  - response property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[subschema #2]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version` list-of-types was widened by adding types `integer and string` to media type `application/json` of response `201`
  - response property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/TransferCallTool]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version` list-of-types was widened by adding types `integer and string` to media type `application/json` of response `201`
  - response property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[subschema #2]/transfer_option/oneOf[subschema #3: Agentic Warm Transfer]/agentic_transfer_config/transfer_agent/agent_version` list-of-types was widened by adding types `integer and string` to media type `application/json` of response `201`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version/oneOf[subschema #2]/` from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version/oneOf[subschema #2]/` from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version/oneOf[subschema #2]/` from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - changed the pattern of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version/oneOf[subschema #2]/` from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `201`
- **2026-05-07** `f1a0d7c1e36c` — 37 breaking, 45 info
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[#/components/schemas/ConversationFlowOverride]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/BranchNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/BridgeTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/CancelTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/CodeNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ConversationNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/EndNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ExtractDynamicVariablesNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/FunctionNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/MCPNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/PressDigitNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SmsNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/BranchNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/BridgeTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/CancelTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/CodeNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/ConversationNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/EndNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/ExtractDynamicVariablesNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/FunctionNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/MCPNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/PressDigitNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SmsNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - removed the enum value `gemini-2.5-flash` of the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version` list-of-types was narrowed by removing types `number` from media type `application/json`
  - request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version` list-of-types was narrowed by removing types `number` from media type `application/json`
  - request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version` list-of-types was narrowed by removing types `number` from media type `application/json`
  - request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version` list-of-types was narrowed by removing types `number` from media type `application/json`
  - response property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version` list-of-types was widened by adding types `integer and string` to media type `application/json` of response `201`
  - response property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version` list-of-types was widened by adding types `integer and string` to media type `application/json` of response `201`
  - response property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[subschema #2]/agent_version` list-of-types was widened by adding types `integer and string` to media type `application/json` of response `201`
  - response property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/AgentSwapTool]/agent_version` list-of-types was widened by adding types `integer and string` to media type `application/json` of response `201`
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ConversationNode]/allOf[#/components/schemas/AgentOverrideConfig]/allow_dtmf_interruption`
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ConversationNode]/allOf[subschema #3]/kb_config`
  - added the new optional request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[#/components/schemas/AgentOverrideConfig]/allow_dtmf_interruption`
  - …42 more
- **2026-04-28** `1b4a9d84942a` — 4 breaking, 29 warning, 33 info
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/CodeNode]/allOf[subschema #2]/code` response property's maxLength was increased from `5000` to `20000` for the response status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/CodeTool]/code` response property's maxLength was increased from `5000` to `20000` for the response status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/CodeNode]/allOf[subschema #2]/code` response property's maxLength was increased from `5000` to `20000` for the response status `201`
  - the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[subschema #3]/tools/items/oneOf[#/components/schemas/CodeTool]/code` response property's maxLength was increased from `5000` to `20000` for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[#/components/schemas/ConversationFlowOverride]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/BranchNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/BridgeTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/CancelTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/CodeNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ConversationNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/EndNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ExtractDynamicVariablesNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/FunctionNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/MCPNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/PressDigitNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SmsNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/BranchNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/BridgeTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/CancelTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/CodeNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/ConversationNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/EndNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/ExtractDynamicVariablesNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/FunctionNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/MCPNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/PressDigitNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SmsNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/SubagentNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/nodes/items/oneOf[#/components/schemas/TransferCallNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model` response property for the response status `201`
  - added the new `gpt-5.5` enum value to the request property `allOf[#/components/schemas/ConversationFlow]/allOf[#/components/schemas/ConversationFlowOverride]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - added the new `gpt-5.5` enum value to the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/AgentSwapNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - added the new `gpt-5.5` enum value to the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/BranchNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - added the new `gpt-5.5` enum value to the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/BridgeTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - added the new `gpt-5.5` enum value to the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/CancelTransferNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - added the new `gpt-5.5` enum value to the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/CodeNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - added the new `gpt-5.5` enum value to the request property `allOf[#/components/schemas/ConversationFlow]/allOf[subschema #2]/components/items/allOf[#/components/schemas/ConversationFlowComponent]/nodes/items/oneOf[#/components/schemas/ConversationNode]/allOf[#/components/schemas/NodeBase]/allOf[subschema #2]/model_choice/oneOf[#/components/schemas/ModelChoiceCascading]/model`
  - …26 more
- …earlier changes are on the page: https://skmtc.dev/retellai/apis/retell-sdk/changes/create-conversation-flow/post

---

[Operation](https://skmtc.dev/retellai/apis/retell-sdk/docs/create-conversation-flow/post.md) · [API](https://skmtc.dev/retellai/apis/retell-sdk.md) · [Page](https://skmtc.dev/retellai/apis/retell-sdk/changes/create-conversation-flow/post)