DeepSeek R1 vs Claude Sonnet 4.6

Compare DeepSeek R1 by DeepSeek against Claude Sonnet 4.6 by Anthropic, context windows of 128K vs 1.0M, tested across 52 shared challenges. Updated April 2026.

Which is better, DeepSeek R1 or Claude Sonnet 4.6?

DeepSeek R1 and Claude Sonnet 4.6 are both competitive models. DeepSeek R1 costs $0.55/M input tokens vs $3/M for Claude Sonnet 4.6. Context windows: 128K vs 1000K tokens. Compare their real outputs side by side below.

Key Differences Between DeepSeek R1 and Claude Sonnet 4.6

DeepSeek R1 is made by deepseek while Claude Sonnet 4.6 is from anthropic. DeepSeek R1 has a 128K token context window compared to Claude Sonnet 4.6's 1000K. On pricing, DeepSeek R1 costs $0.55/M input tokens vs $3/M for Claude Sonnet 4.6.

Our Verdict
Claude Sonnet 4.6
Claude Sonnet 4.6
DeepSeek R1
DeepSeek R1Runner-up

No community votes yet. On paper, Claude Sonnet 4.6 has the edge — newer, bigger context window.

DeepSeek R1 is 6.8x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
84%

DeepSeek R1 uses 14.3x more transitions

DeepSeek R1
Claude Sonnet 4.6
62%Vocabulary56%
15wSentence Length36w
0.52Hedging0.53
8.0Bold5.1
5.7Lists3.4
0.04Emoji0.19
0.62Headings2.10
0.28Transitions0.02
Based on 22 + 23 text responses
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DeepSeek R1Claude Sonnet 4.6
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