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OpenAI changed its API changelog

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

ChangeAPI changelog

Assistants API deprecation moved from current deprecations to past deprecations section; status updated from announced deprecation to completed sunset on August 26, 2026.

2025-08-20: ASSISTANTS API 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. Shutdown dateModel / systemRecommended replacement2026‑08‑26Assistants APIResponses API and Conversations API
2025-08-20: ASSISTANTS API The Assistants API was officially sunset on August 26, 2026, following its deprecation announcement on August 26, 2025. 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. Shutdown dateModel / systemRecommended replacement2026‑08‑26Assistants APIResponses API and Conversations API
Confidence95%
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--- before
+++ after
@@ -77,10 +77,8 @@
     * Best practices
 
  * Assistants API
     * Migration guide
-    * Deep dive
-    * Tools
 
  * Model catalog
 
 CHOOSE A MODEL
@@ -876,18 +874,8 @@
 To improve reliability and make it easier for developers to choose the right models, we are deprecating a set of older OpenAI models with declining usage over the next six to twelve months. Access to these models will be shut down on the dates below.
 
 Shutdown dateModel / systemRecommended replacement2026-09-28gpt-3.5-turbo-instructgpt-5.6-terra2026-09-28babbage-002gpt-5.6-terra2026-09-28davinci-002gpt-5.6-terra2026-09-28gpt-3.5-turbo-1106gpt-5.6-terra
 
-2025-08-20: ASSISTANTS API
-
-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.
-
-Shutdown dateModel / systemRecommended replacement2026‑08‑26Assistants APIResponses API and Conversations API
-
 PAST DEPRECATIONS
 
 Past deprecations are listed below, with the most recent announcements at the top.
 
@@ -942,8 +930,18 @@
 In September, 2025, we notified developers using gpt-4o-realtime-preview models of their deprecation and removal from the API in six months.
 
 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.
+
+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.
+
+Shutdown dateModel / systemRecommended replacement2026‑08‑26Assistants APIResponses API and Conversations API
+
 2025-06-10: GPT-4O-REALTIME-PREVIEW-2024-10-01
 
 On June 10th, 2025, we notified developers using gpt-4o-realtime-preview-2024-10-01 of its deprecation and removal from the API in three months.
 

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