Arena.ai(@arena):Big news: Opus 5 (Max) is now #1 in the Fullstack Code Arena with 1,699 points! The Fullstack Leaderboard shows overall rankings across AI models on full-stack web development tasks: multi-step reasoning, tool use, and end-to-end app generation. Congrats again to the @AnthropicAI team on Opus 5 (Max)!

Arena.ai

@arena

Where AI meets the real world. We measure and advance the frontier of AI through community-driven evaluation. We’re hiring →

Joined March 2023

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Arena.ai@arena

2026.08.05 14:48

Big news: Opus 5 (Max) is now #1# in the Fullstack Code Arena with 1,699 points! The Fullstack Leaderboard shows overall rankings across AI models on full-stack web development tasks: multi-step reasoning, tool use, and end-to-end app generation. Congrats again to the @AnthropicAI team on Opus 5 (Max)!