GPT-5 Codex alternatives
The top alternatives to GPT-5 Codex by OpenAI — comparable Multimodal models ranked by intelligence index. GPT-5 Codex itself scores 87.1. Updated automatically from live benchmark data.
- Sonar Reasoning ProPerplexity95.7IndexCompare
- Gemini 3.5 FlashGoogle92.2IndexCompare
- GPT-5.3-CodexOpenAI91.5IndexCompare
- Gemini 3 FlashGoogle90.2IndexCompare
- GPT-5.2-CodexOpenAI89.9IndexCompare
- Grok-4 HeavyxAI89.3IndexCompare
- Qwen3.5 397B A17BAlibaba89.3IndexCompare
- Muse SparkMeta88.4IndexCompare
- GPT-5.1-CodexOpenAI88.2IndexCompare
- Qwen3.6 PlusAlibaba88.2IndexCompare
- Kimi K2.5Moonshot AI87.9IndexCompare
- Grok-3 MinixAI85.9IndexCompare
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