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Claude Haiku 4.5 vs Mistral Small 4

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Haiku 4.5 and Mistral Small 4.

Anthropic

Claude Haiku 4.5

Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...

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Mistral

Mistral Small 4

Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoning from...

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Technical Specifications

SpecificationClaude Haiku 4.5Mistral Small 4
ProviderAnthropicMistral
Context Window200,000 tokens262,144 tokens
Agent Suitability87/100N/A
Time to First Token (TTFT)180 msN/A
Deployment Modelmanaged apiself hostable
Production Stabilitystablestable
API AvailableYesYes
Released Date2025-10-152026-03-16

API Pricing Comparison

Input Price per Million Tokens

Claude Haiku 4.5

$1.00

Mistral Small 4

$0.15

Output Price per Million Tokens

Claude Haiku 4.5

$5.00

Mistral Small 4

$0.60

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

MMLUGeneral knowledge & multi-task understanding
8480.0%vsN/A
Claude Haiku 4.5
Mistral Small 4
HumanEvalPython coding & logic synthesis
8600.0%vsN/A
Claude Haiku 4.5
Mistral Small 4
MATHComplex mathematical problem solving
7500.0%vsN/A
Claude Haiku 4.5
Mistral Small 4
GPQAGraduate-level expert reasoning
5500.0%vsN/A
Claude Haiku 4.5
Mistral Small 4
HellaSwagCommonsense reasoning and inference
9350.0%vsN/A
Claude Haiku 4.5
Mistral Small 4
MT-BenchMulti-turn conversation flow quality
890.0%vsN/A
Claude Haiku 4.5
Mistral Small 4

Claude Haiku 4.5 Quirks & Gotchas

  • Fastest TTFT in the Claude lineup — ideal for real-time chat
  • Tool calling limited compared to Sonnet — best for simple classification and routing

Mistral Small 4 Quirks & Gotchas

No developer gotchas reported.