API sunset calendar

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OpenAI Evals platform, v1/prompts API and Agent Builder: sunset date 2026-11-30

The sunset date for the OpenAI Evals platform, v1/prompts API and Agent Builder is 2026-11-30, which is 51 days after 2026-10-10, the date this data was compiled.

Provider
OpenAI
Category
ai-api-feature
Sunset date
2026-11-30 (51 days remaining as of 2026-10-10)
What stops working
The Evals platform (dashboard and API), the v1/prompts API with reusable prompt objects, and Agent Builder shut down; Evals becomes read-only on 2026-10-31.
Replacement
Prompt content in application code; Agents SDK or ChatGPT Workspace Agents for Agent Builder

Source

OpenAI API deprecations, developers.openai.com (printed as text, not linked). Read on 2026-10-10. Confirm the date on that page before acting.

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