Codex arrives in ChatGPT as a parallel cloud agent | CodexMaster

Tuesday, July 21, 2026

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2025-05-16May 16, 2025milestoneMilestoneOpenAI Codex

Codex arrives in ChatGPT as a parallel cloud agent

Each task gets its own repo-loaded sandbox on a fine-tuned o3 (codex-1), and tasks run in parallel while you do something else. Delegation-style coding — assign, review, merge — reaches ChatGPT's subscriber base.

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