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Documentation section changed: 2025-08-20: Assistants API

doc:019fb619-9a96-7dbf-bd33-e06fdf8a22fb::Deprecations/Past deprecations/2025-08-20: Assistants API
Product
OpenAI API
Source
HTML
Change kind
Section Changed
Detected
Last updated

Deterministic evidence

Before / after

Extracted from OpenAI's published contract. Open the source ↗

−1+11 change

1 / 1
{
{
"blocks": [
"blocks": [
{
{
"content": "The Assistants API was officially sunset on August 26, 2026, following its deprecation announcement on August 26, 2025.",
"content": "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.",
"type": "paragraph"
"type": "paragraph"
},
},
{
{

Interpreted documentation change

What the vendor announced

The evidence shows a deprecation notice for the Assistants API with a sunset/shutdown scheduled for 2026-08-26 and recommended replacements as the Responses API and Conversations API. The current text confirms the same deprecation timeline as the previous notice, noting the deprecation announcement in 2025 and a shutdown date in 2026, with the suggested replacement endpoints.

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 date Model / system Recommended replacement 2026‑08‑26 Assistants API Responses API and Conversations API

Deadline Aug 26, 2025Vendor source ↗

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Multi-source correlation

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