Skip to content
modsignal

OpenAI changed its API changelog

API changeloghttps://platform.openai.com/docs/deprecations

ChangeAPI changelog

OpenAI API documentation shows multiple breaking changes: deprecation of four transcription models (whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, gpt-4o-transcribe-diarize) with removal February 26, 2027; new API features (Mid-turn steering, Async tool calling, Safety classifiers, Misalignment monitoring); GPT version change from 5.6 to 6 Astra; reorganized documentation structure; and clarified Assistants API deprecation timeline.

* Using GPT-5.6 * Key concepts CORE CONCEPTS * Conversation state * Background mode * Streaming * WebSocket mode * Multi-agent
* Using GPT-6 Astra * Key concepts CORE CONCEPTS * Conversation state * Background mode * Streaming * WebSocket mode * Mid-turn steering * Multi-agent
Confidence95%
Full diff
===================================================================
--- before
+++ after
@@ -14,16 +14,16 @@
 SUGGESTED
 
 responses createreasoning_effortrealtimeprompt caching
 Overview Models Agents Tools Voice & Audio Production API reference
-OverviewModelsAgentsToolsVoice & AudioProductionAPI referenceDocs sectionOverview
+OverviewModelsAgentsToolsVoice & AudioProductionAPI referenceDocsOverview
 
  * Home
 
 GET STARTED
 
  * Quickstart
- * Using GPT-5.6
+ * Using GPT-6 Astra
  * Key concepts
 
 CORE CONCEPTS
 
@@ -31,8 +31,9 @@
  * Conversation state
  * Background mode
  * Streaming
  * WebSocket mode
+ * Mid-turn steering
  * Multi-agent
  * Webhooks
  * File inputs
  * Compaction
@@ -167,8 +168,9 @@
 
  * Skills
  * Tool search
  * Programmatic tool calling
+ * Async tool calling
 
 COMPUTER AND CODE
 
  * Shell
@@ -234,11 +236,13 @@
 
  * Safety best practices
  * Red teaming
  * Safety checks
+    * Safety classifiers
     * Cybersecurity checks
-    * Under 18 API Guidance
+    * Misalignment monitoring
 
+ * Under-18 guidance
  * CSAM guidance
  * Content provenance
  * Your data
  * Permissions
@@ -279,12 +283,12 @@
  * Admin APIs
  * Error codes
 
 Docs Use cases
-DocsUse casesDocs sectionDocs
+DocsUse casesDocsDocs
 
 Plugins Workspace Agents Commerce Ads
-PluginsWorkspace AgentsCommerceAdsDocs sectionSelect...
+PluginsWorkspace AgentsCommerceAdsDocsSelect...
 
  * Home
  * Quickstart
 
@@ -395,9 +399,9 @@
  * Files
  * Conversion Setup
 
 Overview Features Configuration Developers Security Administration Use Cases Resources
-OverviewFeaturesConfigurationDevelopersSecurityAdministrationUse CasesResourcesDocs sectionOverview
+OverviewFeaturesConfigurationDevelopersSecurityAdministrationUse CasesResourcesDocsOverview
 
  * Home
 
 GET STARTED
@@ -599,8 +603,11 @@
 
 GETTING STARTED
 
  * Admin rollout guide
+
+CHATGPT WORK
+
  * ChatGPT Work Overview
  * ChatGPT Work cloud security
  * ChatGPT Work local security
  * ChatGPT Work admin FAQ
@@ -615,8 +622,9 @@
 
 WORKSPACE ACCESS, POLICY, AND MODELS
 
  * Groups and provisioning
+ * User lifecycle management
  * Roles and workspace permissions
  * GPTs and Sharing
  * Managed configuration
  * Prisma AIRS
@@ -686,19 +694,19 @@
  * Company blog
  * Developer blog
 
 Showcase Blog Cookbook Learn Community
-ShowcaseBlogCookbookLearnCommunityDocs sectionSelect...
+ShowcaseBlogCookbookLearnCommunityDocsSelect...
 
  * All posts
 
 RECENT
 
+ * Architectural visualization with Astra
+ * Building games with Astra
  * Meet Rosalind Workbench: Empowering every scientist to be their own research team
  * Automating repetitive work at OpenAI with Codex
  * Meet the winners of OpenAI Build Week
- * Scaling cyber defenders with Daybreak
- * Codex as a platform: build on the open agent harness
 
 TOPICS
 
  * General
@@ -805,8 +813,16 @@
 UPCOMING DEPRECATIONS
 
 Upcoming deprecations are listed below, with the most recent announcements at the top.
 
+2026-08-26: TRANSCRIPTION MODELS
+
+On August 26, 2026, we notified developers using whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, and gpt-4o-transcribe-diarize of their deprecation and removal from the API on February 26, 2027.
+
+For information about the recommended replacements, see the transcription guide.
+
+Shutdown dateModel / systemRecommended replacementFeb 26, 2027whisper-1gpt-live-transcribe or gpt-transcribeFeb 26, 2027gpt-4o-transcribegpt-live-transcribe or gpt-transcribeFeb 26, 2027gpt-4o-mini-transcribegpt-live-transcribe or gpt-transcribeFeb 26, 2027gpt-4o-transcribe-diarizegpt-live-transcribe or gpt-transcribe
+
 2026-07-20: LEGACY AUDIO, REALTIME, AND TRANSCRIPTION MODELS
 
 On July 20, 2026, we notified developers using legacy audio, realtime, and transcription model families and snapshots of their deprecation and removal from the API on January 20, 2027.
 
@@ -937,9 +953,9 @@
 Shutdown dateModel / systemRecommended replacement2026-05-07gpt-4o-realtime-previewgpt-realtime-1.52026-05-07gpt-4o-realtime-preview-2025-06-03gpt-realtime-1.52026-05-07gpt-4o-realtime-preview-2024-12-17gpt-realtime-1.52026-05-07gpt-4o-mini-realtime-previewgpt-realtime-mini2026-05-07gpt-4o-audio-previewgpt-audio-1.52026-05-07gpt-4o-mini-audio-previewgpt-audio-mini
 
 2025-08-20: ASSISTANTS API
 
-The Assistants API was officially sunset on August 26, 2026, following its deprecation announcement on August 26, 2025.
+On August 26th, 2025, we notified developers using the Assistants API of its deprecation and removal from the API one year later, on August 26, 2026.
 
 When we released the Responses API in March 2025, we announced plans to bring all Assistants API features to the easier to use Responses API, with a sunset date in 2026.
 
 See the Assistants to Conversations migration guide to learn more about how to migrate your current integration to the Responses API and Conversations API.

Get the next one in your inbox.

Follow the vendor for free, or write your own prompt and watch any page the same way.

Get started