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The Decoderpublished ()ingested Matthias Bastian1
Part of a story covered by 4 sources: “OpenAI launches Agents API in public beta, exposing the Codex agent harness via one API call” — merged summary and timeline →

OpenAI's new Agents API gives developers the infrastructure behind Codex and ChatGPT

infoAI tools & infraimportance 70
AI summary · glm-5.3-flash

OpenAI released its Agents API in public beta, exposing the infrastructure behind Codex and ChatGPT for building long-running cloud agents.

OpenAI launched the Agents API as a public beta, letting developers build cloud-based agents that can run for hours, execute code, and process files on the same infrastructure that powers Codex and ChatGPT. Features include automatic context management, parallel tool use, and task delegation to sub-agents, with a choice of OpenAI-hosted sandboxes or partner environments from Cloudflare, Vercel, and Oracle. The API builds on the open-source Codex harness and supports MCP, custom functions, and built-in tools such as web search, with no extra fees beyond token-based billing.

  • Public beta of Agents API runs on the infrastructure behind Codex and ChatGPT
  • Automatic context management, parallel tool use, and sub-agent delegation supported
  • Sandboxes available via OpenAI or partners Cloudflare, Vercel, and Oracle
  • No extra fees; billing is based solely on token usage
  • Supports MCP, custom functions, and built-in tools like web search
Read the original
VendorsOpenAICloudflareVercelOracle
ProductsAgents APICodexChatGPT
OrganizationsOpenAI
AI modelsCodexChatGPT
Tagsopenaiagents-apicodexmcpdeveloper-toolscloudflareverceloracle
Full article142 words · extracted from the-decoder.com · click to collapse

Sep 11, 2026

OpenAI has released the Agents API as a public beta. It lets developers build cloud-based agents that run for hours, execute code, and process files. The API runs on the same infrastructure that powers Codex and ChatGPT. Key features include automatic context management, parallel tool use, and the ability to delegate tasks to sub-agents.

Developers can choose between OpenAI-hosted sandboxes or partners like Cloudflare, Vercel, and Oracle. There are no extra fees. Billing is based solely on token usage. The API builds on the open-source Codex harness and supports MCP, custom functions, and built-in tools like web search.

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Text extracted automatically; images, tables and formatting may be missing. Original: https://the-decoder.com/openais-new-agents-api-gives-developers-the-infrastructure-behind-codex-and-chatgpt/