---
title: "Changes to `/v1/responses` — OpenAI Responses API (MVP, stateless single-turn)."
method: POST
path: "/v1/responses"
---

# Changes to `/v1/responses` — OpenAI Responses API (MVP, stateless single-turn).

`POST /v1/responses`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 7 of 75 revisions.

- **2026-10-15** `5e1beae0970b`: 5 info
- **2026-10-03** `f180cec53d4f`: 1 info
- **2026-09-28** `f649e6f55abb`: 1 info
- **2026-08-06** `90d90a11ff95`: 4 breaking, 3 warning, 3 info
- **2026-07-22** `9f3153c32a93`: 2 warning
- **2026-05-27** `d145a90eb76e`: 1 info
- **2026-05-08** `a499d5bea359`: 1 breaking

## Changes

- **2026-10-15** `5e1beae0970b`: 5 info
  - added the optional property `error/reason` to the response with the `400` status
  - added the optional property `error/reason` to the response with the `404` status
  - added the optional property `error/reason` to the response with the `413` status
  - added the optional property `error/reason` to the response with the `503` status
  - added the optional property `oneOf[#/components/schemas/OpenAIErrorEnvelope]/error/reason` to the response with the `500` status
- **2026-10-03** `f180cec53d4f`: 1 info
  - added the new optional `header` request parameter `X-SIE-Remote`
- **2026-09-28** `f649e6f55abb`: 1 info
  - added the optional property `usage/input_tokens_details` to the response with the `200` status
- **2026-08-06** `90d90a11ff95`: 4 breaking, 3 warning, 3 info
  - the request property `input/oneOf[subschema #2]/items/content/oneOf[subschema #2]/items/text` became required
  - the `max_output_tokens` request property's min was increased to `1.00`
  - the `model` request property's minLength was increased from `0` to `1`
  - the `max_output_tokens` request property format changed from `int32` to no format
  - the `max_output_tokens` request property's max was set to `4294967295.00`
  - the `temperature` request property's max was set to `3.4028234663852886e+38`
  - the `temperature` request property's min was set to `0.00`
  - added the new `output_text` enum value to the request property `input/oneOf[subschema #2]/items/content/oneOf[subschema #2]/items/type`
  - added the media type `application/json` for the response with the status `200`
  - added the non-success response with the status `413`
- **2026-07-22** `9f3153c32a93`: 2 warning
  - the `seed` request property's max was set to `9223372036854775808.00`
  - the `seed` request property's min was set to `-9223372036854775808.00`
- **2026-05-27** `d145a90eb76e`: 1 info
  - endpoint added
- **2026-05-08** `a499d5bea359`: 1 breaking
  - api path removed without deprecation

---

[Operation](https://skmtc.dev/superlinked/apis/sie-gateway/docs/v1/responses/post.md) - [API](https://skmtc.dev/superlinked/apis/sie-gateway.md) - [Page](https://skmtc.dev/superlinked/apis/sie-gateway/changes/v1/responses/post)