Claude Opus 4.1 vs Kimi K2 Thinking
Compare Claude Opus 4.1 by Anthropic against Kimi K2 Thinking by Moonshot AI, context windows of 200K vs 262K, tested across 53 shared challenges. Updated April 2026.
Which is better, Claude Opus 4.1 or Kimi K2 Thinking?
Claude Opus 4.1 and Kimi K2 Thinking are both competitive models. Claude Opus 4.1 costs $15/M input tokens vs $0.6/M for Kimi K2 Thinking. Context windows: 200K vs 262K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and Kimi K2 Thinking
Claude Opus 4.1 is made by anthropic while Kimi K2 Thinking is from moonshotai. Claude Opus 4.1 has a 200K token context window compared to Kimi K2 Thinking's 262K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $0.6/M for Kimi K2 Thinking.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Kimi K2 Thinking is 30x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Opus 4.1 uses 38.4x more emoji
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
