Best OpenAI Codex alternatives (2026)
12 alternatives to OpenAI Codex (CLI coding agents, paid from $8/mo). Closest by overlap: Amp, Mistral Vibe, Claude Code and others. 11 have a verified free plan; cheapest published paid entry Cursor at $8/month.
How this list is built: Matched by overlap (+4 same category, +1 related category, +1 per shared feature/editor named on vendor pages, +1 shared free plan). Discontinued tools excluded. Overlap measures similarity, not quality. Listed A–Z by name. Membership comes from our category, verified pricing or a phrase on the vendor's own page. No vendor pays for placement.
| Alternative | Type | Free plan | Paid from | Overlap with OpenAI Codex | Vendor site |
|---|---|---|---|---|---|
| Amazon Q Developer | IDE assistants | Yes | $19/mo | Related category; both mention MCP, code review, code completion, background/cloud agents, mobile apps | Visit |
| Amp | CLI coding agents | Yes | $20/mo | Same category; both mention MCP, self-hosting, code review, background/cloud agents, mobile apps | Visit |
| Claude Code | CLI coding agents | No | $20/mo | Same category; both mention MCP, self-hosting, open source, code review, mobile apps | Visit |
| Crush | CLI coding agents | Yes | Free | Same category; both mention MCP, open source, SSO/SAML, terminal/CLI | Visit |
| Cursor | AI IDEs | Yes | $8/mo | Related category; both mention MCP, code review, code completion, background/cloud agents, websites | Visit |
| Devin | Autonomous coding agents | Yes | $20/mo | Related category; both mention MCP, open source, code completion, background/cloud agents, mobile apps | Visit |
| Kilo Code | IDE agent extensions | Yes | $15/mo | Related category; both mention MCP, self-hosting, open source, code review, code completion | Visit |
| Kiro | AI IDEs | Yes | $20/mo | Related category; both mention MCP, open source, code review, background/cloud agents, mobile apps | Visit |
| Mistral Vibe | CLI coding agents | Yes | $14.99/mo | Same category; both mention MCP, self-hosting, code completion, background/cloud agents, websites | Visit |
| OpenHands | Autonomous coding agents | Yes | $499/mo | Related category; both mention MCP, self-hosting, open source, code review, background/cloud agents | Visit |
| Qwen Code | CLI coding agents | Yes | Free | Same category; both mention MCP, open source, front-end/UI, terminal/CLI | Visit |
| Warp | CLI coding agents | Yes | $18/mo | Same category; both mention MCP, self-hosting, open source, code review, background/cloud agents | Visit |
FAQ
What are the closest alternatives to OpenAI Codex?
By our overlap score, the closest are Amp, Mistral Vibe, Claude Code, Warp, Devin. The score counts same category, shared features named on vendor pages and a shared free plan; it is not a quality rating. The table below is listed A–Z.
Which OpenAI Codex alternatives are free?
11 of these alternatives have a verified free plan: Amazon Q Developer, Amp, Crush, Cursor, Devin, Kilo Code, Kiro, Mistral Vibe, OpenHands, Qwen Code, Warp.
What is the cheapest paid OpenAI Codex alternative?
Cursor, from $8/month on its vendor's pricing page, then Mistral Vibe from $14.99/month.
OpenAI Codex comparisons
Lists that include OpenAI Codex
Alternatives to these tools
OpenAI Codex pricing and plans · All alternatives pages · How we check facts