OpenAI · releasedAgents API

Valid from

2026-09-10

Valid until

still holds

Published

2026-09-10

Recorded by AsOf

2026-10-31

Checked

2026-10-31 · its source page states the value and the date

Confidence

0.70

Sources

“Sep 10 Feature Released the Agents API in public beta. Build agents with a managed Codex harness while OpenAI handles session orchestration, context compaction, and recovery.”— what the page says, read 2026-10-31

• OpenAI API changelog, September 10, 2026primary · developers.openai.com · 2026-09-10

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