CLAIM-2026-09-16-01

OpenAI put the Agents API into public beta on 10 September 2026, exposing the Codex harness behind a single API call with durable sessions, orchestration, automatic context compaction, recovery and subagents, at no additional fee beyond tokens and tools.

Why it matters

It is the event the edition turns on, and it fixes the date from the primary actor's own announcement rather than from coverage.

Sources

• openai2026introduci