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Claude Sonnet 4 vs Mistral Small: Pricing, Benchmarks & Verdict (2026)

Verdict

Mistral Small is significantly cheaper at $0.10/$0.30 per million tokens vs $3.00/$15.00. Claude Sonnet 4 is stronger for coding with a coding ELO of 1305 vs 1160. Mistral Small is faster at 120 tokens/sec vs 78 tokens/sec. Claude Sonnet 4 ranks higher overall with an Arena ELO of 1280 vs 1185. Claude Sonnet 4 offers a larger 200K context window vs 128K.

Side-by-Side Comparison

FeatureClaude Sonnet 4Mistral Small
ProviderAnthropicMistral
Input Price / 1M tokens$3.00$0.100
Output Price / 1M tokens$15.00$0.300
Context Window200K128K
Max Output Tokens64,0008,192
Arena ELO1,2801,185
Coding ELO1,3051,160
TTFT (ms)320160
Tokens/sec78120
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use Claude Sonnet 4

Choose Claude Sonnet 4 when you need: best-in-class coding performance, 200k context window, excellent instruction following. It excels at coding, analysis, long-context, agents tasks. Its 200K context window is larger, making it better for long-document processing.

Strengths:

  • Best-in-class coding performance
  • 200K context window
  • Excellent instruction following

Best for:

codinganalysislong-contextagents
When to Use Mistral Small

Choose Mistral Small when you need: very affordable pricing, fast inference speed, good multilingual support, suitable for lightweight tasks. It excels at chatbots, classification, cost-sensitive, multilingual tasks. It is also the more cost-effective option between the two.

Strengths:

  • Very affordable pricing
  • Fast inference speed
  • Good multilingual support
  • Suitable for lightweight tasks

Best for:

chatbotsclassificationcost-sensitivemultilingual

Frequently Asked Questions

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