Claude Opus 4.1 vs GPT-5 Pro
Compare Claude Opus 4.1 by Anthropic against GPT-5 Pro by OpenAI, in 9 community votes, gpt-5 pro wins 56% of head-to-head duels, context windows of 200K vs 400K, tested across 41 shared challenges. Updated May 2026.
Which is better, Claude Opus 4.1 or GPT-5 Pro?
GPT-5 Pro is the better choice overall, winning 56% of 9 blind community votes on Rival. Claude Opus 4.1 costs $15/M input tokens vs $15/M for GPT-5 Pro. Context windows: 200K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and GPT-5 Pro
Claude Opus 4.1 is made by anthropic while GPT-5 Pro is from openai. Claude Opus 4.1 has a 200K token context window compared to GPT-5 Pro's 400K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $15/M for GPT-5 Pro. In community voting, In 9 community votes, GPT-5 Pro wins 56% of head-to-head duels.
In 9 community votes, GPT-5 Pro wins 56% of head-to-head duels. GPT-5 Pro has the edge overall, but performance varies by task type. Based on blind community voting from the Rival open dataset of 9+ human preference judgments for this pair.
Per 1M tokens
GPT-5 Pro has the edge overall. In 9 blind votes, GPT-5 Pro wins 56% of the time.
Style Comparison
Claude Opus 4.1 uses 509.5x more bold
