Artificial Analysis index v5 reshuffles open-source model rankings

Derya Unutmaz, MD @DeryaTR_Originally posted 2026.10.28

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This new v5 of the Artificial Analysis Intelligence Index makes much more sense now. Some open-source models were apparently benchmaxxing and are not as close to frontier models from OpenAI, Anthropic, or the new Gemini Argon as they were in the previous version of the benchmark.

This post quotes another post: “Artificial Analysis Intelligence Index v5: Claude Opus 5.5 leads, GPT-6 Astra second”