Claude Opus 4.1 vs DeepSeek R1
Compare Claude Opus 4.1 by Anthropic against DeepSeek R1 by DeepSeek, context windows of 200K vs 128K, tested across 52 shared challenges. Updated June 2026.
Which is better, Claude Opus 4.1 or DeepSeek R1?
Claude Opus 4.1 and DeepSeek R1 are both competitive models. Claude Opus 4.1 costs $15/M input tokens vs $0.55/M for DeepSeek R1. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and DeepSeek R1
Claude Opus 4.1 is made by anthropic while DeepSeek R1 is from deepseek. Claude Opus 4.1 has a 200K token context window compared to DeepSeek R1's 128K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $0.55/M for DeepSeek R1.
Per 1M tokens
DeepSeek R1 is cheaper on both — 27× input, 34× output
No community votes yet. On paper, Claude Opus 4.1 has the edge — bigger model tier, newer, bigger context window.
DeepSeek R1 is 34x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Opus 4.1 uses 8.9x more emoji
