AnthropicClaude Haiku 4.5VSMistral AIMistral Small 4
Our Take
We recommend Claude Haiku 4.5 for complex multi-file code and clearly defined tasks, or the 7.6x cheaper Mistral Small 4 if your workflow is limited to scripting single-file apps or clearly defined functions. While they share very similar reasoning capabilities, Claude Haiku 4.5 handles repository-scale projects whereas Mistral Small 4 excels at basic functions and scripts. Choose Claude Haiku 4.5 for multi-file code and clearly defined tasks, or Mistral Small 4 to save on API costs for simple scripts.
▶WHY?
Benchmark Calculations & Evidence:
Coding Evaluation: Claude Haiku 4.5 was evaluated on SWE-bench Verified (scoring 73.3%), while Mistral Small 4 was evaluated on LiveCodeBench (scoring 63.6%).
Reasoning Accuracy: Both models were evaluated on the GPQA Diamond benchmark. Claude Haiku 4.5 scored 73%, while Mistral Small 4 scored 71.2%.
Cost Efficiency: Mistral Small 4 pricing ($0.15/M input, $0.6/M output) is 7.6x cheaper than Claude Haiku 4.5 ($1/M input, $5/M output).
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Benchmarks & Scores
Coding (swe-bench-verified)
73.3%multi-file code and clearly defined tasks
Reasoning (gpqa-diamond)Winner (+1.8%)
73%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$2.00Input: $1.00 | Output: $5.00Context Window
200k tokensBenchmarks & Scores
Coding (live-code-bench)
63.6%scripting single-file apps or clearly defined functions
Reasoning (gpqa-diamond)
71.2%graduate-level science QA
Cost & Context
Cost (per 1M tokens)7.6x cheaper
$0.26Input: $0.15 | Output: $0.60Context WindowLarger
262.14k tokensFrequently Asked Questions about Claude Haiku 4.5 vs Mistral Small 4
Mistral Small 4 is cheaper than Claude Haiku 4.5. Mistral Small 4 has a blended cost of $0.26/1M tokens, which is about 7.6x cheaper than Claude Haiku 4.5 at $2.00/1M tokens.
For coding tasks, Claude Haiku 4.5 scores 73.3% on swe-bench-verified (multi-file code and clearly defined tasks), while Mistral Small 4 scores 63.6% on live-code-bench (scripting single-file apps or clearly defined functions).
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