Best OpenAI Codex Alternatives in 2026
Updated
20 tools from AI coding assistants ranked against OpenAI Codex on the same published basis.
- 1OpenAI Codex vs GitHub Copilot
- 2OpenAI Codex vs Kilo Code
- 3OpenAI Codex vs Claude Code
- 4OpenAI Codex vs JetBrains Junie
- 5OpenAI Codex vs Devin
- 6OpenAI Codex vs Amp
- 7OpenAI Codex vs CodeGPT
- 8OpenAI Codex vs Tabby
- 9OpenAI Codex vs Gemini CLI
- 10OpenAI Codex vs Snowflake CoCo
- 11OpenAI Codex vs Gemini Code Assist
- 12OpenAI Codex vs Amazon Q
- 13OpenAI Codex vs Baidu Comate
- 14OpenAI Codex vs IBM Bob
- 15OpenAI Codex vs Zencoder
- 17OpenAI Codex vs Tencent CodeBuddy
- 18OpenAI Codex vs Tongyi Lingma
- 19OpenAI Codex vs AskCodi
- 20OpenAI Codex vs Aider
- 21OpenAI Codex vs Agentforce Vibes
OpenAI Codex alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | GitHub Copilot | 9.8 | Free plan | $10/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 2 | Kilo Code | 9.4 | Free plan | $15/mo | Android, API, Browser, iOS, Linux, Mac, Web, Windows |
| 3 | Claude Code | 9.0 | Free plan | $17/mo | Web, Windows, Mac, Linux, iOS, Android |
| 4 | JetBrains Junie | 9.0 | Free plan | $8.33/mo | Browser, Linux, Mac, Web, Windows |
| 5 | Devin | 8.9 | Free plan | $20/mo | API, Linux, Mac, Web, Windows |
| 6 | Amp | 8.7 | Free plan | — | API, iOS, Linux, Mac, Web, Windows |
| 7 | CodeGPT | 8.7 | Free plan | $10/mo | API, Browser, Linux, Mac, self-hosted, Windows |
| 8 | Tabby | 8.5 | Free plan | $15/mo | API, Browser, Linux, Mac, self-hosted, Web, Windows |
| 9 | Gemini CLI | 8.4 | Free plan | Free | Windows, Mac, Linux |
| 10 | Snowflake CoCo | 8.3 | No | — | API, Linux, Mac, Web, Windows |
| 11 | Gemini Code Assist | 8.3 | Free plan | $22.80/mo | Web, Windows, Mac, Linux |
| 12 | Amazon Q | 8.1 | Free plan | — | Web, Android |
| 13 | Baidu Comate | 8.0 | No | — | Web, Windows, Mac, Linux |
| 14 | IBM Bob | 8.0 | No | $20/mo | Windows, Mac, Linux |
| 15 | Zencoder | 8.0 | No | $45/mo | Windows, Mac, Linux |
| 17 | Tencent CodeBuddy | 7.9 | No | — | Windows, Mac, Linux |
| 18 | Tongyi Lingma | 7.9 | No | — | Windows, Mac, Linux |
| 19 | AskCodi | 7.9 | Free plan | $29/mo | Web, Windows, Mac |
| 20 | Aider | 7.8 | No | — | Windows, Mac, Linux, Web |
| 21 | Agentforce Vibes | 7.8 | Free plan | $125/mo | Web, iOS, Android |
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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: Kilo Code, Claude Code, JetBrains Junie and 16 more.
What is the best free alternative to OpenAI Codex?
GitHub Copilot is the best-ranked alternative with a free plan. 13 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.