Noometry

Model comparison

Claude Fable 5 vs Mistral Small 4

Claude Fable 5 has enough public results to be ranked (#5); Mistral Small 4 does not yet, so treat this comparison as directional.

Last verified . 1 shared benchmarks.

Claude Fable 5 Anthropic

66.8

Rank #5 Confirmed

Mistral Small 4 Mistral AI

30.8

Unranked Sparse

Summary

  • They share 1 benchmark with published results for both. Claude Fable 5 scores higher in 1 category and Mistral Small 4 in 0 categories; one gap is clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Fable 5 leads 76.8 to 21.9.
  • The biggest single-benchmark swing is Kagi LLM Benchmark: 91.4% for Claude Fable 5 and 40.5% for Mistral Small 4.
  • Mistral Small 4 is cheaper at $0.075 / $0.30 per million input/output tokens, against $10 / $50 for Claude Fable 5.
  • Claude Fable 5 accepts more context: 1M tokens versus 262K.
  • Mistral Small 4 has downloadable open weights; the other is API-only.

Side by side

Claude Fable 5Mistral Small 4
ProviderAnthropicMistral AI
Noometry Index66.830.8
Released2026-06-07—
WeightsProprietaryOpen
Context window1M262K
Max output128K210K
Input $ / M tokens$10$0.075
Output $ / M tokens$50$0.30
Results tracked621

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Category by category

Coding Not comparable

Claude Fable 5: 70.6 (#4), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
DeepSWE69.9%—
FrontierCode53.5%—
LMArena WebDev1625—
FrontierSWE47%—
SciCode61%—
GSO78.4%—
WeirdML91.9%—
LMArena Coding1519—
MirrorCode63.9%—
ALE-Bench2,041—

Agentic & Tool Use Not comparable

Claude Fable 5: 54.0 (#2), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
APEX-Agents63.6%—
Remote Labor Index16.1%—
τ²-bench Banking39.7%—
PostTrainBench41.8%—
GBAEval74.5%—
GDP.pdf30%—
LMArena Search1230—
Vending-Bench 25,680—

Reasoning Claude Fable 5 leads

Claude Fable 5: 76.8 (#6), Mistral Small 4: 21.9

BenchmarkClaude Fable 5Mistral Small 4
Kagi LLM Benchmark91.4%40.5%
ARC-AGI-289.2%—
SimpleBench81.9%—
NYT Connections (extended)92.7%—
ARC-AGI-198.5%—
CritPt28.6%—
Chess Puzzles41%—
EnigmaEval39.3%—
EBR-Bench39.5%—
LMArena Hard Prompts1508—
Mystery Game Puzzles52%—
DTBench98.4%—
LMCA61.1%—
Surface Evolver Bench95%—
Bench to the Future 30.13—
Epoch Capabilities Index162.06—

Math Not comparable

Claude Fable 5: 88.5 (#5), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
FrontierMath (Tiers 1-3)87%—
FrontierMath Tier 490.2%—
OTIS Mock AIME 2024-2025100%—
ProofBench95%—
LMArena Math1519—
FrontierMath Erdős0%—

Knowledge Not comparable

Claude Fable 5: 62.2 (#25), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
GPQA Diamond85.9%—
SimpleQA Verified70.7%—
LMArena Expert1534—

Multimodal Not comparable

Claude Fable 5: 45.3 (#17), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
LMArena Vision1324—
Blueprint-Bench 238.6%—
Furniture Assembly35.8%—
LMArena Document1496—

Multilingual Not comparable

Claude Fable 5: 57.3 (#9), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
LMArena Non-English1481—
LMArena Chinese1543—
LMArena French1505—
LMArena German1486—
LMArena Japanese1506—
LMArena Korean1488—
LMArena Russian1504—
LMArena Spanish1498—

Instruction Following Not comparable

Claude Fable 5: 78.6 (#8), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
LMArena Instruction Following1502—

Long Context Not comparable

Claude Fable 5: 46.3 (#23), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
LMArena Longer Query1509—

Writing & Preference Not comparable

Claude Fable 5: 75.9 (#5), Mistral Small 4: —

BenchmarkClaude Fable 5Mistral Small 4
LMArena Text1491—
LMArena Creative Writing1494—
EQ-Bench Creative Writing1943—
EQ-Bench 41340—
LMArena Multi-Turn1504—

Frequently asked questions

Is Claude Fable 5 better than Mistral Small 4?

Claude Fable 5 has enough public results to be ranked (#5); Mistral Small 4 does not yet, so treat this comparison as directional.

Which is cheaper, Claude Fable 5 or Mistral Small 4?

Mistral Small 4 is cheaper. It lists at $0.075 per million input tokens and $0.30 per million output tokens; Claude Fable 5 lists at $10 and $50.

Which has the bigger context window?

Claude Fable 5 does, with 1M tokens against 262K.

How many benchmarks do Claude Fable 5 and Mistral Small 4 share?

1 benchmark has published results for both models. Claude Fable 5 has 62 scored results on Noometry and Mistral Small 4 has 1.

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