OpenAI's coding agent, bundled with ChatGPT.
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Questions
Does Codex have a free plan
Yes. Free and Go: Limited. Checked Nov 9, 2026.
Who makes Codex
OpenAI.
What are alternatives to Codex
Augment Code, Claude Code, Cursor, GitHub Copilot, JetBrains AI.
Head to head
All comparisons- Claude Code vs Codex: Lowest paid plan: Codex not listed, Claude Code $20 a month.
- Codex vs GitHub Copilot: Lowest paid plan: Codex not listed, GitHub Copilot $10 a month.
- Codex vs Cursor: Lowest paid plan: Codex not listed, Cursor $8 a month.