Modelpeers

Assistants API

API at OpenAI

Retired

Assistants API shut down

The Assistants API shut down on August 26, 2026. OpenAI points users to the Responses API and Conversations API.

Who is affected:
Apps still calling the Assistants API.
Action needed:
Migrate to the Responses and Conversations APIs.

Source

"The Assistants API shut down on August 26, 2026."

OpenAI API changelog

Published

Open the sourcedevelopers.openai.com

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