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Codex

by OpenAI

4.4
Benchmark RatingLaunched 2025Included in $20/mo Plus

Codex (the new agent version) is OpenAI's cloud-native coding agent. Assign it issues in GitHub or ChatGPT, and it works autonomously across your repo — writing code, running tests and opening PRs.

Cloud agentGitHub PRsAutonomous
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Pricing Tiers

Click a tier to see full details

Plus — $20/mo

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Limited agent runs

Plan: PlusPrice: $20/moTool: Codex

Capabilities & Specs

Best for
Autonomous cloud coding
Context window
Repo-wide
Image generation
Voice mode
Code execution
Web browsing
Offline / open weights
Public API
Starting price
$20/mo Plus

Pros

  • Truly autonomous PRs
  • Deep repo understanding
  • Runs in cloud, not your machine

Cons

  • Usage-limited
  • Needs repo access permissions

Tasks Codex Covers

CodingAgents