Kimi K3.1 Pro hits #4 lab on Code Arena WebDev, 74% cheaper than Claude Opus 5
arena · x · 2026-10-24
Arena's Code Arena: WebDev eval shows Kimi K3.1 Pro (Max), priced at $2/$10 per million input/output tokens, has a median cost per task of $1.23—74% cheaper than Claude Opus 5 (Max) while scoring 1 point higher, 24% cheaper than GPT-6 Sol (Max) with +11 pts, and 47% cheaper than Qwen3.8-Max with +20 pts. By lab, Moonshot Kimi is now #4 overall on WebDev with a score of 1692, behind Anthropic, OpenAI and Meta.
Related event: Kimi K3.1 Pro cracks Code Arena top 10 at a fraction of Claude's cost(4 posts)→
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