---
title: "Changes to Chat (POST)"
method: POST
path: "/v1/chat/completions"
---

# Changes to Chat (POST)

`POST /v1/chat/completions`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 6 of 10 revisions.

- **2026-10-27** `dee7777b8958`: 1 info
- **2026-08-11** `0c601a16410f`: 1 warning
- **2026-04-06** `1b4365f47b75`: 2 breaking, 8 info
- **2026-04-05** `7b79b2e349e9`: 1 info
- **2026-03-19** `234b0198f5a8`: 1 warning
- **2026-03-17** `2486dd6cc627`: 5 breaking, 2 warning, 7 info

## Changes

- **2026-10-27** `dee7777b8958`: 1 info
  - the `model` request property default value changed from `lixsearch` to `oreolook`
- **2026-08-11** `0c601a16410f`: 1 warning
  - removed the request property `session_id`
- **2026-04-06** `1b4365f47b75`: 2 breaking, 8 info
  - the `error` response's property type changed from no type to `string` for status `400`
  - the `error` response's property type changed from no type to `string` for status `503`
  - api operation id `createChatCompletion` removed and replaced with `chat`
  - api tag `Chat` added
  - api tag `OpenAI Compatible` removed
  - added the non-success response with the status `401`
  - added the non-success response with the status `403`
  - removed the non-success response with the status `500`
  - removed `subschema #1, subschema #2` from the `error` response property `oneOf` list for the response status `400`
  - removed `subschema #1, subschema #2` from the `error` response property `oneOf` list for the response status `503`
- **2026-04-05** `7b79b2e349e9`: 1 info
  - the `messages/items/content/oneOf[subschema #2]/items/image_url/url` request property format was generalized from `uri` to no format
- **2026-03-19** `234b0198f5a8`: 1 warning
  - removed the request property `deep_search`
- **2026-03-17** `2486dd6cc627`: 5 breaking, 2 warning, 7 info
  - the `messages/items/content/oneOf[subschema #2]/items/image_url/url` request property format changed from no format to `uri`
  - added `subschema #1, subschema #2` to the `error` response property `oneOf` list for the response status `400`
  - added `subschema #1, subschema #2` to the `error` response property `oneOf` list for the response status `503`
  - the `error` response's property type changed from `string` to no type for status `400`
  - the `error` response's property type changed from `string` to no type for status `503`
  - the `temperature` request property's max was set to `2.00`
  - the `temperature` request property's min was set to `0.00`
  - api operation id `chat` removed and replaced with `createChatCompletion`
  - api tag `OpenAI Compatible` added
  - api tag `Chat` removed
  - added the new optional request property `deep_search`
  - added the non-success response with the status `500`
  - removed the non-success response with the status `401`
  - removed the non-success response with the status `403`

---

[Operation](https://skmtc.dev/elixpo/apis/lixsearch-api/docs/v1/chat/completions/post.md) - [API](https://skmtc.dev/elixpo/apis/lixsearch-api.md) - [Page](https://skmtc.dev/elixpo/apis/lixsearch-api/changes/v1/chat/completions/post)