---
title: "Changes to Get input token counts"
method: POST
path: "/responses/input_tokens"
---

# Changes to Get input token counts

`POST /responses/input_tokens`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 8 of 88 revisions.

- **2026-10-26** `410e6429083a`: 9 info
- **2026-10-23** `af780af62f70`: 3 info
- **2026-10-20** `fbe6e5768509`: 3 info
- **2026-10-15** `12b3c184a924`: 2 info
- **2026-10-13** `ec8179625cd5`: 1 info
- **2026-10-06** `ae9945cbda0f`: 1 breaking, 1 info
- **2026-10-06** `487892d3954e`: 2 info
- **2026-10-05** `7f654af7f94f`: 1 info

## Changes

- **2026-10-26** `410e6429083a`: 9 info
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #1: Input message]/content/oneOf[subschema #2: Input item content list]/items/oneOf[subschema #1: Input text]/prompt_cache_breakpoint/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #1: Input message]/content/oneOf[subschema #2: Input item content list]/items/oneOf[subschema #2: Input image]/prompt_cache_breakpoint/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #1: Input message]/content/oneOf[subschema #2: Input item content list]/items/oneOf[subschema #3: Input file]/prompt_cache_breakpoint/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #1: Input message]/content/items/oneOf[subschema #1: Input text]/prompt_cache_breakpoint/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #1: Input message]/content/items/oneOf[subschema #2: Input image]/prompt_cache_breakpoint/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #1: Input message]/content/items/oneOf[subschema #3: Input file]/prompt_cache_breakpoint/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #27: Custom tool call output]/output/oneOf[subschema #2: output content list]/items/oneOf[subschema #1: Input text]/prompt_cache_breakpoint/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #27: Custom tool call output]/output/oneOf[subschema #2: output content list]/items/oneOf[subschema #2: Input image]/prompt_cache_breakpoint/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #27: Custom tool call output]/output/oneOf[subschema #2: output content list]/items/oneOf[subschema #3: Input file]/prompt_cache_breakpoint/ttl`
- **2026-10-23** `af780af62f70`: 3 info
  - the `` request property default value changed from `gpt-image-1` to `gpt-image-2`
  - the `` request property default value changed from `gpt-image-1` to `gpt-image-2`
  - the `` request property default value changed from `gpt-image-1` to `gpt-image-2`
- **2026-10-20** `fbe6e5768509`: 3 info
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #8: Function tool call output]/output/oneOf[subschema #2]/items/oneOf[subschema #1: Input text]/prompt_cache_breakpoint/anyOf[subschema #1: Prompt cache breakpoint]/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #8: Function tool call output]/output/oneOf[subschema #2]/items/oneOf[subschema #2: Input image]/prompt_cache_breakpoint/anyOf[subschema #1: Prompt cache breakpoint]/ttl`
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #8: Function tool call output]/output/oneOf[subschema #2]/items/oneOf[subschema #3: Input file]/prompt_cache_breakpoint/anyOf[subschema #1: Prompt cache breakpoint]/ttl`
- **2026-10-15** `12b3c184a924`: 2 info
  - the request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #6: Web search tool call]/action/oneOf[subschema #3: Find action]/url` became optional
  - request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #6: Web search tool call]/action/oneOf[subschema #3: Find action]/url` list-of-types was widened by adding types `null` to media type `application/json`
- **2026-10-13** `ec8179625cd5`: 1 info
  - added the new optional request property `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[subschema #15: Image generation call]/error`
- **2026-10-06** `ae9945cbda0f`: 1 breaking, 1 info
  - removed `#/components/schemas/NamespaceToolParam` from the `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[#/components/schemas/ToolSearchOutputItemParam]/tools/items/` request property `oneOf` list
  - added `#/components/schemas/ToolSearchOutputNamespaceToolParam` to the `input/anyOf[subschema #1]/oneOf[subschema #2]/items/oneOf[subschema #2: Item]/oneOf[#/components/schemas/ToolSearchOutputItemParam]/tools/items/` request property `oneOf` list
- **2026-10-06** `487892d3954e`: 2 info
  - added the optional property `error/misalignment/review_target` to the response with the `400` status
  - added the optional property `error/misalignment/review_target` to the response with the `429` status
- **2026-10-05** `7f654af7f94f`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/omnistack-sh/apis/openai-api/docs/responses/input_tokens/post.md) - [API](https://skmtc.dev/omnistack-sh/apis/openai-api.md) - [Page](https://skmtc.dev/omnistack-sh/apis/openai-api/changes/responses/input_tokens/post)