Best OpenAI Codex Alternatives in 2026
Updated
20 apps from AI coding assistants ranked against OpenAI Codex on the same published basis.
- 1OpenAI Codex vs GitHub Copilot
- 2OpenAI Codex vs Claude Code
- 3OpenAI Codex vs Kilo Code
- 4OpenAI Codex vs Amazon Q
- 5OpenAI Codex vs Amp
- 6OpenAI Codex vs Agentforce Vibes
- 7OpenAI Codex vs Devin
- 8OpenAI Codex vs JetBrains Junie
- 9OpenAI Codex vs Gemini CLI
- 10OpenAI Codex vs OpenADE
- 11OpenAI Codex vs GitHub Codespaces
- 12OpenAI Codex vs Atlassian Rovo Dev
- 13OpenAI Codex vs Tabby
- 14OpenAI Codex vs CodeGPT
- 15OpenAI Codex vs Factory Droid
- 16OpenAI Codex vs Qoder CN
- 17OpenAI Codex vs agentty
- 18OpenAI Codex vs Gemini Code Assist
- 19OpenAI Codex vs Pragma
- 20OpenAI Codex vs muxd
OpenAI Codex alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | GitHub Copilot | 9.8 | Free plan | $10/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 2 | Claude Code | 9.5 | Free plan | $17/mo | Web, Windows, Mac, Linux, iOS, Android |
| 3 | Kilo Code | 9.3 | Free plan | $15/mo | Android, API, Browser, iOS, Linux, Mac, Web, Windows |
| 4 | Amazon Q | 9.2 | Free plan | — | Web, Android |
| 5 | Amp | 9.2 | Free plan | — | API, iOS, Linux, Mac, Web, Windows |
| 6 | Agentforce Vibes | 8.7 | Free plan | $125/mo | Web, iOS, Android |
| 7 | Devin | 8.1 | Free plan | $20/mo | API, Linux, Mac, Web, Windows |
| 8 | JetBrains Junie | 8.0 | Free plan | $8.33/mo | Browser, Linux, Mac, Web, Windows |
| 9 | Gemini CLI | 7.9 | Free plan | Free | Windows, Mac, Linux |
| 10 | OpenADE | 7.8 | Free plan | Free | Windows, Mac, Linux, iOS |
| 11 | GitHub Codespaces | 7.8 | Free plan | $0.07/mo | Android, API, Browser, iOS, Linux, Mac, Web, Windows |
| 12 | Atlassian Rovo Dev | 7.7 | Free plan | $20/mo | — |
| 13 | Tabby | 7.7 | Free plan | $15/mo | API, Browser, Linux, Mac, self-hosted, Web, Windows |
| 14 | CodeGPT | 7.7 | Free plan | $10/mo | API, Browser, Linux, Mac, self-hosted, Windows |
| 15 | Factory Droid | 7.7 | No | $20/mo | Web, Windows, Mac, Linux, iOS, Android |
| 16 | Qoder CN | 7.7 | No | CNY 59/mo | Windows, Mac, Linux, iOS, Android |
| 17 | agentty | 7.7 | No | — | Windows, Mac, Linux, Android |
| 18 | Gemini Code Assist | 7.5 | Free plan | $22.80/mo | Web, Windows, Mac, Linux |
| 19 | Pragma | 7.4 | No | — | Web, Windows, Mac, Linux, iOS, Android |
| 20 | muxd | 7.4 | No | — | Web, Windows, Mac, Linux, iOS |
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Questions about OpenAI Codex alternatives
What is the best alternative to OpenAI Codex?
GitHub Copilot, number 1 in AI coding assistants with a score of 9.8 out of 10. The others here: Claude Code, Kilo Code, Amazon Q and 16 more.
What is the best free alternative to OpenAI Codex?
GitHub Copilot is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.