Claude Opus 4.1 vs Gemini 3.5 Flash
Compare Claude Opus 4.1 by Anthropic against Gemini 3.5 Flash by Google AI, context windows of 200K vs 1.0M, tested across 53 shared challenges. Updated May 2026.
Which is better, Claude Opus 4.1 or Gemini 3.5 Flash?
Claude Opus 4.1 and Gemini 3.5 Flash are both competitive models. Claude Opus 4.1 costs $15/M input tokens vs $1.5/M for Gemini 3.5 Flash. Context windows: 200K vs 1049K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and Gemini 3.5 Flash
Claude Opus 4.1 is made by anthropic while Gemini 3.5 Flash is from google. Claude Opus 4.1 has a 200K token context window compared to Gemini 3.5 Flash's 1049K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $1.5/M for Gemini 3.5 Flash.
Per 1M tokens
Gemini 3.5 Flash is cheaper on both — 10× input, 8.3× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 3.5 Flash is 8.3x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Opus 4.1 uses 38.4x more emoji
