Claude Opus 5.5 Max Tops Code Arena WebDev at 1818, Leading GPT-6 Astra by 26
airesearch12 · x · 2026-09-24
Claude Opus 5.5 (Max) takes #1 in Code Arena's WebDev leaderboard with 1818 pts, a +26 lead over runner-up GPT-6 Astra (Max) and a +126 jump over the previous Opus 5 (Max) at 1692, reshaping the Pareto frontier.
By category, Opus 5.5 (Max) ranks #1 in Brand & Marketing, Reference-Based Design, Data & Analytics, and Simulations & Gaming, and #2 in Consumer Product. Anthropic says Opus 5.5 matches Claude Fable 5.1 on most tasks at 40% lower cost than Opus 5.
Related event: Claude Opus 5.5 Tops Code Arena, Beating GPT-6 Astra by 26 Points(2 posts)→
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