openai-api-4 revision history

Remove requirement to enable outbound SIP calling in session creationlatestno API changesDocs 73e5f9e2026-11-03 00:29

Clarify markup image support in image editing APIno API changesDocs c2aecc22026-10-31 17:43

Remove redundant enumDescriptions from fixed enum propertiesno API changesDocs 2e9ebb32026-10-30 20:54

Add optional strength parameter for realtime noise reduction8Docs 8c668ca 2026-10-30 18:46

Change detail

8 changes across 4 operations

POST/realtime/client_secrets
- info
  added the new optional request property /////
- info
  added the new optional request property /////
- info
  added the optional property ///// to the response with the status
- info
  added the optional property ///// to the response with the status
POST/realtime/translations/client_secrets
- info
  added the new optional request property /////
- info
  added the optional property ///// to the response with the status
POST/realtime/calls/{call_id}/accept
- info
  added the new optional request property ///
POST/realtime/calls
- info
  added the new optional request property /////

Add 'generate' boolean flag to control output generation in responsesno API changesDocs 74058142026-10-30 18:28

Allow updating session tools in agent session API1Docs 4854a49 2026-10-30 17:50

Change detail

1 change across 1 operation

POST/agents/sessions/{session_id}
- info
  added the new optional request property /

Add action review mode to session resources and parameters16Docs b85fb6c 2026-10-30 06:36

Change detail

16 changes across 5 operations

POST/agents/sessions
- info
  added the new optional request property
- info
  added the optional property ///// to the response with the status (media type: text/event-stream)
- info
  added the optional property ///// to the response with the status (media type: text/event-stream)
- info
  added the optional property ///// to the response with the status (media type: text/event-stream)
- info
  added the optional property ///// to the response with the status (media type: text/event-stream)
- info
  added the optional property ///// to the response with the status (media type: text/event-stream)
- info
  added the optional property to the response with the status (media type: application/json)

View all changes (16)

Add keywords parameter to guide audio transcription4Docs 4d66832 2026-10-30 01:45

Change detail

4 changes across 3 operations

POST/realtime/client_secrets
- info
  added the optional property ///////// to the response with the status
- info
  added the optional property ///////// to the response with the status
POST/realtime/sessions
- info
  added the optional property /// to the response with the status
POST/realtime/transcription_sessions
- info
  added the optional property / to the response with the status

Add text output configuration to response configuration updates82Docs 9107f19 2026-10-29 20:05

Change detail

82 changes across 20 operations

POST/responses
- info
  added the new optional request property /////////
- info
  added discriminator to ///// request property
- info
  added the optional property ////////// to the response with the status (media type: application/json)
- info
  added the optional property /////////////// to the response with the status (media type: text/event-stream)
- info
  added the optional property /////////////// to the response with the status (media type: text/event-stream)
- info
  added the optional property /////////////// to the response with the status (media type: text/event-stream)
- info
  added the optional property /////////////// to the response with the status (media type: text/event-stream)

View all changes (82)

Add experimental 'time_awareness' setting to agent configuration42Docs 089b14f 2026-10-29 04:05

Add 'markup' property to image editing endpoints2Docs aa88004 2026-10-28 20:56

Add context compaction settings to agent configuration APIs42Docs 26a2991 2026-10-28 18:44

Add structured input types for Realtime response APIno API changesDocs 07574432026-10-28 17:53

Mark /audio/translations endpoint as deprecated and update TTS model de@1Docs ff80a23 2026-10-28 05:40

Add support for sending SIP DTMF keypresses via new command1Docs cfe1bd3 2026-10-28 05:20

Add external key management endpoints for organizations5Docs b3e28b9 2026-10-28 04:52

Add new realtime connection parameter schemasno API changesDocs 1e201c92026-10-28 04:07

Add deprecation notices for multiple speech and audio modelsno API changesDocs 810186d2026-10-28 04:04

Add detailed tool usage reporting to response data30Docs 54640e1 2026-10-27 23:08

Update image style effort parameter description for model supportno API changesDocs 2dfb8412026-10-27 21:31

Add metadata filter to session query parameters1Docs 8b539e3 2026-10-27 16:35

Improve example payloads formatting and update field types in realtime'sno API changesDocs ee46bb72026-10-27 01:10

Add deprecation notices for several GPT models with shutdown datesno API changesDocs 0597e6f2026-10-26 21:24

Add optional ttl field to Prompt cache breakpoint with predefined values948Docs 1a7f124 2026-10-26 20:31

Add OCI Object Storage support to external storage APIno API changesDocs 9ae46b22026-10-26 19:34

Add gpt-6.1-terra model option to enum lists305Docs f83f6b5 2026-10-26 18:14

Revamp Live API messaging and decision item schemas16Docs 8243cc8 2026-10-24 04:05

Deprecate GPT-Image-1 model and update defaults to GPT-Image-2 family205Docs 0938b0f 2026-10-23 19:43

Add full Agents API with automations, environments, and sessions10Docs 7d4f4af 2026-10-23 18:07

Add automations tool type for agent management1824Docs a181bc7 2026-10-23 14:03

Add JSON input support and unify message content schema45Docs 290bd01 2026-10-22 17:29

Add acknowledgement_delay_ms property to delegation parameters7Docs 762a1df 2026-10-22 02:57

Allow deletion of API keys for service accounts and remove related error1Docs d8d7654 2026-10-22 01:12

Add DELETE endpoint to remove custom audio voices1Docs a13fbb7 2026-10-21 22:03

Add 30-minute cache write tokens to organization usage completionsno API changesDocs 3db76f52026-10-21 01:54

Add ttl property to cache breakpoint objects159Docs 9ac9f85 2026-10-20 23:35

Fix typos in API documentation descriptionsno API changesDocs d4f5f0a2026-10-20 20:56

Make scopes or expires_in_seconds required in UpdateProjectApiKeyBody1Docs 5cc3a83 2026-10-20 03:15

Increase max questions per request from 200 to 400no API changesDocs 1ac50f92026-10-20 01:09

Clarify input_cache_write_tokens description to cover multiple retentionno API changesDocs c396f252026-10-19 20:27

Add nullable input_cache_write_30m_tokens metric to token usage data12Docs 33248a6 2026-10-19 05:35

Remove example response from moderation create endpointno API changesDocs f88d2f72026-10-18 03:52

Add new event types for reasoning summary updates in sessionsno API changesDocs d1567632026-10-17 04:24

Replace explicit text example in moderation endpoint with generic text11Docs c9fc5f8 2026-10-16 23:46

Add 'ultrafast' service tier option to model requests4Docs 8ba0678 2026-10-16 23:28