Anthropic’s Claude Fable 5.1 (Max) has claimed the top position on the Code Arena: WebDev leaderboard with 1,765 points. The model, launched on September 1, 2026, outpaces Alibaba’s Qwen3.8 Max by 77 points, as the runner-up sits at 1,688 points. Code Arena evaluates AI models on real-world frontend web development tasks and has collected over 640,000 votes across 124 models. Fable 5.1 builds on the June 2026 release of Fable 5, with improvements in long-horizon agentic coding and enhanced vision capabilities. Anthropic priced the model at approximately $40 per million tokens with a 75% reduction in cache read costs.
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