---
title: "Changes to Send message (OpenAI format)."
method: POST
path: "/api/v1/projects/{projectId}/chat/completions"
---

# Changes to Send message (OpenAI format).

`POST /api/v1/projects/{projectId}/chat/completions`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 10 revisions.

- **2026-11-03** `77aab4354382`: 6 warning, 4 info
- **2026-07-17** `b80e6dfcf78d`: 1 info
- **2023-06-02** `1842d7fd0430`: 1 breaking

## Changes

- **2026-11-03** `77aab4354382`: 6 warning, 4 info
  - added the new `422.00` enum value to the `data/code` response property for the response status `400`
  - added the new `422.00` enum value to the `data/code` response property for the response status `401`
  - added the new `422.00` enum value to the `data/code` response property for the response status `404`
  - added the new `422.00` enum value to the `data/code` response property for the response status `429`
  - added the new `422.00` enum value to the `data/code` response property for the response status `500`
  - added the new `422.00` enum value to the `data/code` response property for the response status `501`
  - added the new optional request property `labels`
  - added the new optional request property `labels_exclusive`
  - added the new optional request property `sub_personas`
  - added the media type `text/event-stream` for the response with the status `200`
- **2026-07-17** `b80e6dfcf78d`: 1 info
  - endpoint added
- **2023-06-02** `1842d7fd0430`: 1 breaking
  - api path removed without deprecation

---

[Operation](https://skmtc.dev/poll-the-people/apis/customgpt-ai/docs/api/v1/projects/:projectId/chat/completions/post.md) - [API](https://skmtc.dev/poll-the-people/apis/customgpt-ai.md) - [Page](https://skmtc.dev/poll-the-people/apis/customgpt-ai/changes/api/v1/projects/:projectId/chat/completions/post)