--- title: "Changes to Update a specific assistant version" method: POST path: "/ai/assistants/{assistant_id}/versions/{version_id}" --- # Changes to Update a specific assistant version `POST /ai/assistants/{assistant_id}/versions/{version_id}` > Every recorded change to this operation, newest first. ## Timeline Changed in 23 of 89 revisions. - **2026-10-21** `518d187a4e3c`: 2 info - **2026-10-21** `a2e3f7a0ec7b`: 4 warning, 16 info - **2026-10-19** `cd1dad49af81`: 2 info - **2026-10-16** `41a44f8d0939`: 1 warning, 1 info - **2026-10-16** `99bc9ff17679`: 4 info - **2026-10-16** `e962a08c9820`: 4 info - **2026-10-15** `ca98207fd031`: 5 breaking, 1 warning, 2 info - **2026-10-15** `a72569d69430`: 4 breaking, 23 warning, 157 info - **2026-06-05** `8a8c40f458c5`: 8 breaking, 8 info - **2026-06-05** `3f3befefc607`: 2 breaking, 6 info - **2026-06-04** `8a56feba7190`: 4 info - **2026-06-04** `3390803c3bb0`: 2 info - **2026-05-26** `ac6be9fa50c1`: 2 info - **2026-05-20** `157ea860b82e`: 2 info - **2026-05-18** `c260e29f1496`: 1 warning, 9 info - **2026-05-14** `50870cc05614`: 4 breaking, 4 info - **2026-05-14** `a144ff96b4ac`: 4 breaking, 4 info - **2026-05-11** `24057b25c3f5`: 2 info - **2026-05-08** `30cb1ddce91b`: 3 breaking, 7 warning, 45 info - **2026-04-21** `e17ea465fdc4`: 2 info - **2026-04-20** `83b0b3ef1a20`: 2 info - **2026-04-17** `66523f014691`: 2 info - **2026-04-16** `54c5a6e44be1`: 1 breaking, 1 info ## Changes - **2026-10-21** `518d187a4e3c`: 2 info - added the new optional request property `insight_settings/model` - added the optional property `insight_settings/model` to the response with the `200` status - **2026-10-21** `a2e3f7a0ec7b`: 4 warning, 16 info - added the new `speechmatics/linden-1` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `speechmatics/linden-1` enum value to the `transcription/model` response property for the response status `200` - added the new `speechmatics/standard` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `speechmatics/standard` enum value to the `transcription/model` response property for the response status `200` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/challenger/anyOf[subschema #1: TranscriptionChallenger]/settings/anyOf[subschema #1: TranscriptionSettingsConfig]/remove_disfluencies` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/fallback_models/items/settings/anyOf[subschema #1: TranscriptionSettingsConfig]/remove_disfluencies` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/settings/remove_disfluencies` - added the new optional request property `transcription/challenger/anyOf[subschema #1: TranscriptionChallenger]/settings/anyOf[subschema #1: TranscriptionSettingsConfig]/remove_disfluencies` - added the new optional request property `transcription/fallback_models/items/settings/anyOf[subschema #1: TranscriptionSettingsConfig]/remove_disfluencies` - added the new optional request property `transcription/settings/remove_disfluencies` - added the new `speechmatics/linden-1` enum value to the request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/model` - added the new `speechmatics/linden-1` enum value to the request property `transcription/model` - added the new `speechmatics/standard` enum value to the request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/model` - added the new `speechmatics/standard` enum value to the request property `transcription/model` - added the optional property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/challenger/anyOf[subschema #1: TranscriptionChallenger]/settings/anyOf[subschema #1: TranscriptionSettingsConfig]/remove_disfluencies` to the response with the `200` status - added the optional property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/fallback_models/items/settings/anyOf[subschema #1: TranscriptionSettingsConfig]/remove_disfluencies` to the response with the `200` status - added the optional property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/settings/remove_disfluencies` to the response with the `200` status - added the optional property `transcription/challenger/anyOf[subschema #1: TranscriptionChallenger]/settings/anyOf[subschema #1: TranscriptionSettingsConfig]/remove_disfluencies` to the response with the `200` status - added the optional property `transcription/fallback_models/items/settings/anyOf[subschema #1: TranscriptionSettingsConfig]/remove_disfluencies` to the response with the `200` status - added the optional property `transcription/settings/remove_disfluencies` to the response with the `200` status - **2026-10-19** `cd1dad49af81`: 2 info - added the new optional request property `privacy_settings/pii_redaction` - added the optional property `privacy_settings/pii_redaction` to the response with the `200` status - **2026-10-16** `41a44f8d0939`: 1 warning, 1 info - added the new `illustrated_workspace` enum value to the `avatar_settings/anyOf[subschema #1: AvatarSettings]/oneOf[subschema #1: TelnyxAvatarSettings]/background_id` response property for the response status `200` - added the new `illustrated_workspace` enum value to the request property `avatar_settings/anyOf[subschema #1: AvatarSettingsRequest]/oneOf[subschema #1: TelnyxAvatarSettings]/background_id` - **2026-10-16** `99bc9ff17679`: 4 info - added the new optional request property `tools/items/oneOf[subschema #7: TransferTool]/transfer/bridge_beep` - added the optional property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/oneOf[subschema #7: TransferTool]/transfer/bridge_beep` to the response with the `200` status - added the optional property `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/oneOf[subschema #7: TransferTool]/transfer/bridge_beep` to the response with the `200` status - added the optional property `tools/items/oneOf[subschema #7: TransferTool]/transfer/bridge_beep` to the response with the `200` status - **2026-10-16** `e962a08c9820`: 4 info - added the new optional request property `tools/items/oneOf[subschema #7: TransferTool]/transfer/warm_transfer_acceptance/timeout_secs` - added the optional property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/oneOf[subschema #7: TransferTool]/transfer/warm_transfer_acceptance/timeout_secs` to the response with the `200` status - added the optional property `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/oneOf[subschema #7: TransferTool]/transfer/warm_transfer_acceptance/timeout_secs` to the response with the `200` status - added the optional property `tools/items/oneOf[subschema #7: TransferTool]/transfer/warm_transfer_acceptance/timeout_secs` to the response with the `200` status - **2026-10-15** `ca98207fd031`: 5 breaking, 1 warning, 2 info - the `avatar_settings/anyOf[subschema #1: AvatarSettingsRequest]/oneOf[subschema #1: TelnyxAvatarSettings]/avatar_id` request property's minLength was increased from `0` to `1` - removed `subschema #1: Stock avatar ID, subschema #2: Custom avatar ID` from the `avatar_settings/anyOf[subschema #1: AvatarSettingsRequest]/oneOf[subschema #1: TelnyxAvatarSettings]/avatar_id` request property `oneOf` list - added the pattern `^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$` to the request property `avatar_settings/anyOf[subschema #1: AvatarSettingsRequest]/oneOf[subschema #1: TelnyxAvatarSettings]/avatar_id` - the `avatar_settings/anyOf[subschema #1: AvatarSettingsRequest]/oneOf[subschema #1: TelnyxAvatarSettings]/avatar_id` request property type changed from no type to `string` - the `avatar_settings/anyOf[subschema #1: AvatarSettings]/oneOf[subschema #1: TelnyxAvatarSettings]/avatar_id` response's property type changed from no type to `string` for status `200` - the `avatar_settings/anyOf[subschema #1: AvatarSettingsRequest]/oneOf[subschema #1: TelnyxAvatarSettings]/avatar_id` request property's maxLength was set to `128` - removed `subschema #1: Stock avatar ID, subschema #2: Custom avatar ID` from the `avatar_settings/anyOf[subschema #1: AvatarSettings]/oneOf[subschema #1: TelnyxAvatarSettings]/avatar_id` response property `oneOf` list for the response status `200` - the `avatar_settings/anyOf[subschema #1: AvatarSettings]/oneOf[subschema #1: TelnyxAvatarSettings]/avatar_id` response's property pattern `^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$` was added for the status `200` - **2026-10-15** `a72569d69430`: 4 breaking, 23 warning, 157 info - removed `#/components/schemas/HangupTool` from the `tools/items/` request property `oneOf` list - added `#/components/schemas/FunctionTool, #/components/schemas/ClientSideTool, #/components/schemas/inference-embedding_HangupTool, #/components/schemas/VisionTool, #/components/schemas/PayTool, #/components/schemas/UpdateDynamicVariablesTool` to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/` response property `oneOf` list for the response status `200` - added `#/components/schemas/FunctionTool, #/components/schemas/ClientSideTool, #/components/schemas/inference-embedding_HangupTool, #/components/schemas/VisionTool, #/components/schemas/PayTool, #/components/schemas/UpdateDynamicVariablesTool` to the `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/` response property `oneOf` list for the response status `200` - added `#/components/schemas/FunctionTool, #/components/schemas/ClientSideTool, #/components/schemas/inference-embedding_HangupTool, #/components/schemas/VisionTool, #/components/schemas/PayTool, #/components/schemas/UpdateDynamicVariablesTool` to the `tools/items/` response property `oneOf` list for the response status `200` - the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/settings/keyterm` request property's maxLength was set to `1000` - the `transcription/settings/keyterm` request property's maxLength was set to `1000` - removed the request property `tools/items/oneOf[subschema #1: WebhookTool -> subschema #2: WebhookTool]/webhook/timeout_ms` - removed the optional property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/oneOf[subschema #1: WebhookTool -> subschema #2: WebhookTool]/webhook/timeout_ms` from the response with the `200` status - removed the optional property `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/oneOf[subschema #1: WebhookTool -> subschema #2: WebhookTool]/webhook/timeout_ms` from the response with the `200` status - removed the optional property `tools/items/oneOf[subschema #1: WebhookTool -> subschema #2: WebhookTool]/webhook/timeout_ms` from the response with the `200` status - added the new `aicoustics` enum value to the `telephony_settings/noise_suppression` response property for the response status `200` - added the new `assemblyai/universal-3-5-pro` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `assemblyai/universal-3-5-pro` enum value to the `transcription/model` response property for the response status `200` - added the new `cohere/ar-stt` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `cohere/ar-stt` enum value to the `transcription/model` response property for the response status `200` - added the new `humain/realtime` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `humain/realtime` enum value to the `transcription/model` response property for the response status `200` - added the new `nvidia/parakeet-v3` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `nvidia/parakeet-v3` enum value to the `transcription/model` response property for the response status `200` - added the new `omi-health/omi-med-stt-v1` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `omi-health/omi-med-stt-v1` enum value to the `transcription/model` response property for the response status `200` - added the new `reson8/turns` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `reson8/turns` enum value to the `transcription/model` response property for the response status `200` - added the new `soniox/stt-rt-v5` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `soniox/stt-rt-v5` enum value to the `transcription/model` response property for the response status `200` - added the new `telnyx/basira` enum value to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/transcription/model` response property for the response status `200` - added the new `telnyx/basira` enum value to the `transcription/model` response property for the response status `200` - added the new optional request property `a2a_agents` - added the new optional request property `avatar_settings` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/challenger` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/fallback_models` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/settings/context` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/settings/language_hints` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/transcription/settings/prompt` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNodeReq]/voice_settings/tool_call_audio` - added the new optional request property `conversation_flow/nodes/items/oneOf[subschema #2: ToolNodeReq]/message` - added the new optional request property `delegation_settings` - added the new optional request property `interruption_settings/interrupt_prediction_threshold` - added the new optional request property `privacy_settings/in_transit_data_locality` - added the new optional request property `telephony_settings/conversation_ended_full_history` - …144 more - **2026-06-05** `8a8c40f458c5`: 8 breaking, 8 info - removed `subschema #1: targets_list` from the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list - removed `subschema #1: targets_list` from the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` request property `oneOf` list - added `subschema #1` to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - added `subschema #1` to the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - added `subschema #1` to the `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - added `subschema #1` to the `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - added `subschema #1` to the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - added `subschema #1` to the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - added `subschema #1` to the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list - added `subschema #1` to the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` request property `oneOf` list - removed `subschema #1: targets_list` from the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - removed `subschema #1: targets_list` from the `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - removed `subschema #1: targets_list` from the `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - removed `subschema #1: targets_list` from the `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - removed `subschema #1: targets_list` from the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - removed `subschema #1: targets_list` from the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - **2026-06-05** `3f3befefc607`: 2 breaking, 6 info - added `#/components/schemas/DefaultCondition` to the `conversation_flow/edges/items/condition` response property `oneOf` list for the response status `200` - added `#/components/schemas/SpeakNode` to the `conversation_flow/nodes/items/` response property `oneOf` list for the response status `200` - added `default` discriminator mapping keys to the `conversation_flow/edges/items/condition` request property - added `speak` discriminator mapping keys to the `conversation_flow/nodes/items/` request property - added `#/components/schemas/DefaultCondition` to the `conversation_flow/edges/items/condition` request property `oneOf` list - added `#/components/schemas/SpeakNodeReq` to the `conversation_flow/nodes/items/` request property `oneOf` list - added `default` discriminator mapping keys to the `conversation_flow/edges/items/condition` response property for the response status `200` - added `speak` discriminator mapping keys to the `conversation_flow/nodes/items/` response property for the response status `200` - **2026-06-04** `8a56feba7190`: 4 info - added the new optional request property `tools/items/oneOf[subschema #5: TransferTool]/transfer/description` - added the optional property `conversation_flow/nodes/items/oneOf[subschema #1: FlowNode]/tools/items/items/oneOf[subschema #5: TransferTool]/transfer/description` to the response with the `200` status - added the optional property `conversation_flow/nodes/items/oneOf[subschema #2: ToolNode]/tool/items/oneOf[subschema #5: TransferTool]/transfer/description` to the response with the `200` status - added the optional property `tools/items/oneOf[subschema #5: TransferTool]/transfer/description` to the response with the `200` status - **2026-06-04** `3390803c3bb0`: 2 info - added the new optional request property `conversation_flow` - added the optional property `conversation_flow` to the response with the `200` status - **2026-05-26** `ac6be9fa50c1`: 2 info - added the new optional request property `telephony_settings/recording_settings/stop_on_conversation_end` - added the optional property `telephony_settings/recording_settings/stop_on_conversation_end` to the response with the `200` status - **2026-05-20** `157ea860b82e`: 2 info - added the new optional request property `tools/items/oneOf[subschema #1: WebhookTool]/webhook/async_timeout_ms` - added the optional property `tools/items/oneOf[subschema #1: WebhookTool]/webhook/async_timeout_ms` to the response with the `200` status - **2026-05-18** `c260e29f1496`: 1 warning, 9 info - added the new `soniox/stt-rt-v4` enum value to the `transcription/model` response property for the response status `200` - added the new optional request property `transcription/settings/enable_endpoint_detection` - added the new optional request property `transcription/settings/interim_results` - added the new optional request property `transcription/settings/max_endpoint_delay_ms` - added the new optional request property `voice_settings/background_audio/oneOf[subschema #1]/volume` - added the new `soniox/stt-rt-v4` enum value to the request property `transcription/model` - added the optional property `transcription/settings/enable_endpoint_detection` to the response with the `200` status - added the optional property `transcription/settings/interim_results` to the response with the `200` status - added the optional property `transcription/settings/max_endpoint_delay_ms` to the response with the `200` status - added the optional property `voice_settings/background_audio/oneOf[subschema #1]/volume` to the response with the `200` status - **2026-05-14** `50870cc05614`: 4 breaking, 4 info - removed `subschema #1` from the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list - removed `subschema #1` from the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` request property `oneOf` list - added `subschema #1: targets_list` to the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - added `subschema #1: targets_list` to the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - added `subschema #1: targets_list` to the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list - added `subschema #1: targets_list` to the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` request property `oneOf` list - removed `subschema #1` from the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - removed `subschema #1` from the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - **2026-05-14** `a144ff96b4ac`: 4 breaking, 4 info - removed `subschema #1: targets_list` from the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list - removed `subschema #1: targets_list` from the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` request property `oneOf` list - added `subschema #1` to the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - added `subschema #1` to the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - added `subschema #1` to the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` request property `oneOf` list - added `subschema #1` to the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` request property `oneOf` list - removed `subschema #1: targets_list` from the `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` response property `oneOf` list for the response status `200` - removed `subschema #1: targets_list` from the `tools/items/oneOf[subschema #6: InviteTool]/invite/targets` response property `oneOf` list for the response status `200` - **2026-05-11** `24057b25c3f5`: 2 info - the `eager_eot_threshold` request property default value changed from `0.4` to `0.8` - the `eager_eot_threshold` response's property default value changed from `0.4` to `0.8` for the status `200` - **2026-05-08** `30cb1ddce91b`: 3 breaking, 7 warning, 45 info - added the new required request property `tools/items/oneOf[subschema #6: InviteTool]/invite` - response property `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` list-of-types was widened by adding types `string` to media type `application/json` of response `200` - removed the required property `tools/items/oneOf[subschema #6: InviteTool]/invite_config` from the response with the `200` status - the `transcription/settings/eot_threshold` request property's max was set to `0.90` - the `transcription/settings/eot_timeout_ms` request property's max was set to `10000.00` - the `transcription/settings/eot_threshold` request property's min was set to `0.50` - the `transcription/settings/eot_timeout_ms` request property's min was set to `500.00` - removed the request property `tools/items/oneOf[subschema #6: InviteTool]/invite_config` - added the new `assemblyai/universal-streaming` enum value to the `transcription/model` response property for the response status `200` - added the new `xai/grok-stt` enum value to the `transcription/model` response property for the response status `200` - added the new optional request property `dynamic_variables_webhook_timeout_ms` - added the new optional request property `external_llm` - added the new optional request property `fallback_config` - added the new optional request property `integrations` - added the new optional request property `interruption_settings` - added the new optional request property `mcp_servers` - added the new optional request property `observability_settings/prompt_label` - added the new optional request property `observability_settings/prompt_name` - added the new optional request property `observability_settings/prompt_sync` - added the new optional request property `observability_settings/prompt_version` - added the new optional request property `tags` - added the new optional request property `transcription/api_key_ref` - added the new optional request property `transcription/settings/end_of_turn_confidence_threshold` - added the new optional request property `transcription/settings/max_turn_silence` - added the new optional request property `transcription/settings/min_turn_silence` - added the new optional request property `version_name` - the `eot_threshold` request property default value `0.8` was added - the `eot_timeout_ms` request property default value `5000` was added - the `eager_eot_threshold` request property default value changed from `0.3` to `0.4` - added the new `assemblyai/universal-streaming` enum value to the request property `transcription/model` - added the new `xai/grok-stt` enum value to the request property `transcription/model` - request property `tools/items/oneOf[subschema #5: TransferTool]/transfer/targets` list-of-types was widened by adding types `string` to media type `application/json` - added the optional property `dynamic_variables_webhook_timeout_ms` to the response with the `200` status - added the optional property `external_llm` to the response with the `200` status - added the optional property `fallback_config` to the response with the `200` status - added the optional property `integrations` to the response with the `200` status - added the optional property `interruption_settings` to the response with the `200` status - added the optional property `mcp_servers` to the response with the `200` status - added the optional property `observability_settings/prompt_label` to the response with the `200` status - added the optional property `observability_settings/prompt_name` to the response with the `200` status - …15 more - **2026-04-21** `e17ea465fdc4`: 2 info - added the new optional request property `post_conversation_settings` - added the optional property `post_conversation_settings` to the response with the `200` status - **2026-04-20** `83b0b3ef1a20`: 2 info - added the new optional request property `transcription/settings/keyterm` - added the optional property `transcription/settings/keyterm` to the response with the `200` status - **2026-04-17** `66523f014691`: 2 info - added the new optional request property `telephony_settings/user_idle_reply_secs` - added the optional property `telephony_settings/user_idle_reply_secs` to the response with the `200` status - **2026-04-16** `54c5a6e44be1`: 1 breaking, 1 info - the `telephony_settings/user_idle_timeout_secs` response property's min was decreased from `30.00` to `10.00` for the response status `200` - the `telephony_settings/user_idle_timeout_secs` request property's min was decreased from `30.00` to `10.00` --- [Operation](https://skmtc.dev/team-telnyx/apis/telnyx-api/docs/ai/assistants/:assistant_id/versions/:version_id/post.md) - [API](https://skmtc.dev/team-telnyx/apis/telnyx-api.md) - [Page](https://skmtc.dev/team-telnyx/apis/telnyx-api/changes/ai/assistants/:assistant_id/versions/:version_id/post)