AI Launch Profile

Introducing Codex

OpenAI introduced Codex as a cloud-based software engineering agent that works on coding tasks in parallel in isolated environments.

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At a glance

Launch Snapshot

Company: OpenAI
Launch date: May 16, 2025
Launch type: New Product
Category: AI Coding Tools
Audience: Developers, Enterprises, Founders
Pricing: Launched for ChatGPT Pro, Business, and Enterprise users, with Plus access added later; current access depends on ChatGPT plan.
Free plan: No
API: No
Open weights/source: No

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Official site Demo Supporting source

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A priority coding-agent record because Codex turned ChatGPT into an asynchronous code worker, not just an assistant.

Software teams, founders, developers, and technical operators who want an agent to read code, write features, fix bugs, and propose changes.

Parallel tasks, sandboxed execution, PR-style output, and repo-aware workflows are high-value for teams.

Trust, review quality, environment setup, and internet access controls are key adoption constraints.

One of the defining software engineering agent launches of 2025, competing with Claude Code, Copilot coding agent, Cursor, and Jules.

Source list

Official site openai.com Demo chatgpt.com Supporting source cdn.openai.com