#Agent Builder

OpenAI Evals go read-only on 2026-10-31: the migration checklist before the 2026-11-30 shutdown

The deprecation page timeline (verified 2026-10-31): existing evals become read-only on 2026-10-31; the Evals dashboard and API shut down 2026-11-30. The same day also ends v1/prompts and Agent Builder. Official Evals path: Promptfoo.