Changes to Update chat completion

Changed in 9 of the 164 revisions of this API.▲17●4○23

1. Sep 25, 20268166b0205067○4
2. Sep 1, 2026ca86486f9fef●1
3. Aug 27, 202660c5936f2a2f○1
4. Aug 14, 20269080adae100c○1
5. Aug 14, 2026fe3335711e48○3
6. Aug 5, 2026ab0c5306e390●1○2
7. May 13, 202674cbcf73838f▲17○9
8. Apr 29, 20256a6c681b1820●2○2
9. Mar 11, 20256ab43fe7798e○1

What changed

• Sep 25, 20268166b0205067○4See the full diff
  • ○

    added the non-success response with the status 400

    response-non-success-status-added

  • ○

    added the non-success response with the status 404

    response-non-success-status-added

  • ○

    added the non-success response with the status 429

    response-non-success-status-added

  • ○

    added the non-success response with the status 500

    response-non-success-status-added

• Sep 1, 2026ca86486f9fef●1See the full diff
  • ●

    removed the optional property usage/compute_units from the response with the 200 status

    response-optional-property-removed

• Aug 27, 202660c5936f2a2f○1See the full diff
  • ○

    added the optional property usage/compute_units to the response with the 200 status

    response-optional-property-added

• Aug 14, 20269080adae100c○1See the full diff
  • ○

    added the optional property metadata to the response with the 200 status

    response-optional-property-added

• Aug 14, 2026fe3335711e48○3See the full diff
  • ○

    added the optional property usage/completion_tokens_details/text_tokens to the response with the 200 status

    response-optional-property-added

  • ○

    added the optional property usage/prompt_tokens_details/image_tokens to the response with the 200 status

    response-optional-property-added

  • ○

    added the optional property usage/prompt_tokens_details/text_tokens to the response with the 200 status

    response-optional-property-added

• Aug 5, 2026ab0c5306e390●1○2See the full diff
  • ●

    added the new fast enum value to the service_tier/anyOf[subschema #1] response property for the response status 200

    response-property-enum-value-added

  • ○

    added the optional property moderation to the response with the 200 status

    response-optional-property-added

  • ○

    added the optional property usage/prompt_tokens_details/cache_write_tokens to the response with the 200 status

    response-optional-property-added

  This revision also has 2 changes that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog

• May 13, 202674cbcf73838f▲17○9See the full diff
  • ▲

    the request property metadata became not nullable

    request-property-became-not-nullable

  • ▲

    response property choices/items/message/content list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property choices/items/message/refusal list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property service_tier list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    added ChatCompletionMessageToolCall ChatCompletionMessageCustomToolCall to the choices/items/message/tool_calls/items response property oneOf list for the response status 200

    response-property-one-of-added

  • ▲

    the choices/items/logprobs response's property type changed from object to no type for status 200

    response-property-type-changed

  • ▲

    the choices/items/message/audio response's property type changed from object to no type for status 200

    response-property-type-changed

  • ▲

    the choices/items/message/tool_calls/items response's property type changed from object to no type for status 200

    response-property-type-changed

  • ▲

    removed the required property choices/items/logprobs/content from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property choices/items/logprobs/refusal from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property choices/items/message/audio/data from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property choices/items/message/audio/expires_at from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property choices/items/message/audio/id from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property choices/items/message/audio/transcript from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property choices/items/message/tool_calls/items/function from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property choices/items/message/tool_calls/items/id from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property choices/items/message/tool_calls/items/type from the response with the 200 status

    response-required-property-removed

  • ○

    request property metadata list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    added subschema #1 subschema #2 to the choices/items/logprobs response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added subschema #1 subschema #2 to the choices/items/message/audio response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    the service_tier response's property default value auto was removed for the status 200

    response-property-default-value-removed

  • ○

    response property system_fingerprint deprecated

    response-property-deprecated

  • ○

    added discriminator to choices/items/message/tool_calls/items response property for the response status 200

    response-property-discriminator-added

  • ○

    removed the auto enum value from the service_tier response property for the response status 200

    response-property-enum-value-removed

  • ○

    removed the default enum value from the service_tier response property for the response status 200

    response-property-enum-value-removed

  • ○

    removed the flex enum value from the service_tier response property for the response status 200

    response-property-enum-value-removed

  This revision also has 40 changes that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog

• Apr 29, 20256a6c681b1820●2○2See the full diff
  • ●

    added the new auto enum value to the service_tier response property for the response status 200

    response-property-enum-value-added

  • ●

    added the new flex enum value to the service_tier response property for the response status 200

    response-property-enum-value-added

  • ○

    the service_tier response's property default value auto was added for the status 200

    response-property-default-value-added

  • ○

    removed the scale enum value from the service_tier response property for the response status 200

    response-property-enum-value-removed

  This revision also has 18 changes that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog

• Mar 11, 20256ab43fe7798e○1See the full diff
  • ○

    endpoint added

    endpoint-added