OpenAI launches Agents API to run the Codex harness as a managed service

The public beta manages context and subagents while letting developers use OpenAI, partner, or self-hosted sandboxes.

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Primary source: OpenAI Developers on X

Why it matters

OpenAI is turning the software around its models into a managed platform, competing for the orchestration and compute spending that agent startups currently capture.

A smiling long-haired man sits behind a laptop bearing the OpenAI logo, with “Agents API” text across the lower left.

OpenAI launched the Agents API on September 10th, putting the harness and cloud infrastructure behind Codex into a managed service for developers building long-running agents.

https://x.com/OpenAIDevs/status/2098130570048045453

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