Mistral Nemo vs Claude Sonnet 4

Compare Mistral Nemo by Mistral AI against Claude Sonnet 4 by Anthropic, context windows of 128K vs 200K, tested across 18 shared challenges. Updated April 2026.

Which is better, Mistral Nemo or Claude Sonnet 4?

Mistral Nemo and Claude Sonnet 4 are both competitive models. Mistral Nemo costs $0.03/M input tokens vs $3/M for Claude Sonnet 4. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between Mistral Nemo and Claude Sonnet 4

Mistral Nemo is made by mistral while Claude Sonnet 4 is from anthropic. Mistral Nemo has a 128K token context window compared to Claude Sonnet 4's 200K. On pricing, Mistral Nemo costs $0.03/M input tokens vs $3/M for Claude Sonnet 4.

Our Verdict
Claude Sonnet 4
Claude Sonnet 4
Mistral Nemo
Mistral NemoRunner-up

No community votes yet. On paper, Claude Sonnet 4 has the edge — newer, bigger context window, major provider backing.

Mistral Nemo is 214x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
84%

Claude Sonnet 4 uses 87.9x more emoji

Mistral Nemo
Claude Sonnet 4
46%Vocabulary62%
19wSentence Length111w
1.08Hedging0.40
3.6Bold5.0
8.0Lists9.3
0.00Emoji0.88
0.00Headings2.16
0.17Transitions0.33
Based on 10 + 17 text responses
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Mistral NemoClaude Sonnet 4

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
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