Exciting news: Claude Opus 5 with Max reasoning is #1 in the Frontend Code Arena and Text Arena with factuality on!
Claude Opus 5 with default reasoning high is also very strong landing #3 in Frontend Code Arena, right behind Kimi K3 - and #2 in Text Arena (factuality on).
This is real world data that @AnthropicAI's newest model holds up on real world tasks: agentic web coding, document reasoning, and general chat capability.
Claude Opus 5 Max’s score is still preliminary. We’ll continue to see how scores converge and share updates.
Congrats to @AnthropicAI on the SOTA release!