Noometry

Model comparison

Claude Fable 5 vs Mistral Small

Claude Fable 5 is the stronger model overall, scoring 66.8 to 33.4 on the Noometry Index. Mistral Small costs 76× less per token, which makes it the better buy when Claude Fable 5's lead doesn't matter for your workload.

Last verified . 26 shared benchmarks.

Claude Fable 5 Anthropic

66.8

Rank #5 Confirmed

Mistral Small Mistral AI

33.4

Rank #243 Confirmed

Summary

  • They share 26 benchmarks with published results for both. Claude Fable 5 scores higher in 10 categories and Mistral Small in 0 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Fable 5 leads 88.5 to 16.4.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Fable 5 and 5.8% for Mistral Small.
  • Mistral Small is cheaper at $0.15 / $0.60 per million input/output tokens, against $10 / $50 for Claude Fable 5.
  • Claude Fable 5 accepts more context: 1M tokens versus 262K.
  • Mistral Small has downloadable open weights; the other is API-only.

Side by side

Claude Fable 5Mistral Small
ProviderAnthropicMistral AI
Noometry Index66.833.4
Released2026-06-072024-02-26
WeightsProprietaryOpen
Context window1M262K
Max output128K256K
Input $ / M tokens$10$0.15
Output $ / M tokens$50$0.60
Results tracked6239

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Category by category

Coding Claude Fable 5 leads

Claude Fable 5: 70.6 (#4), Mistral Small: 34.0 (#247)

BenchmarkClaude Fable 5Mistral Small
SciCode61%26.5%
LMArena Coding15191362
ALE-Bench2,041497.62
DeepSWE69.9%—
FrontierCode53.5%—
LMArena WebDev1625—
FrontierSWE47%—
GSO78.4%—
WeirdML91.9%—
BigCodeBench Instruct—36.1%
LiveBench Coding—36.2%
MirrorCode63.9%—
BigCodeBench Complete—46.6%

Agentic & Tool Use Claude Fable 5 leads

Claude Fable 5: 54.0 (#2), Mistral Small: 28.1 (#93)

BenchmarkClaude Fable 5Mistral Small
APEX-Agents63.6%—
Berkeley Function Calling Leaderboard—37.1%
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: 19.8 (#250)

BenchmarkClaude Fable 5Mistral Small
Kagi LLM Benchmark91.4%37.8%
CritPt28.6%0%
LMArena Hard Prompts15081335
DTBench98.4%70.9%
LMCA61.1%20.6%
ARC-AGI-289.2%—
SimpleBench81.9%—
NYT Connections (extended)92.7%—
ARC-AGI-198.5%—
Chess Puzzles41%—
EnigmaEval39.3%—
EBR-Bench39.5%—
LiveBench Reasoning—44.8%
Mystery Game Puzzles52%—
LiveBench Data Analysis—53.7%
Surface Evolver Bench95%—
Bench to the Future 30.13—
Epoch Capabilities Index162.06—
LiveBench—44%

Math Claude Fable 5 leads

Claude Fable 5: 88.5 (#5), Mistral Small: 16.4 (#293)

BenchmarkClaude Fable 5Mistral Small
OTIS Mock AIME 2024-2025100%5.8%
LMArena Math15191341
FrontierMath (Tiers 1-3)87%—
FrontierMath Tier 490.2%—
ProofBench95%—
LiveBench Math—39.9%
MATH Level 5—46.8%
FrontierMath Erdős0%—

Knowledge Claude Fable 5 leads

Claude Fable 5: 62.2 (#25), Mistral Small: 31.0 (#222)

BenchmarkClaude Fable 5Mistral Small
GPQA Diamond85.9%47.5%
LMArena Expert15341291
SimpleQA Verified70.7%—
Vectara Hallucination Rate—5.1%
MMLU—68.7%

Multimodal Claude Fable 5 leads

Claude Fable 5: 45.3 (#17), Mistral Small: 33.5 (#96)

BenchmarkClaude Fable 5Mistral Small
LMArena Vision13241142
Blueprint-Bench 238.6%—
Furniture Assembly35.8%—
LMArena Document1496—

Multilingual Claude Fable 5 leads

Claude Fable 5: 57.3 (#9), Mistral Small: 45.5 (#169)

BenchmarkClaude Fable 5Mistral Small
LMArena Non-English14811315
LMArena Chinese15431340
LMArena French15051337
LMArena German14861340
LMArena Japanese15061275
LMArena Korean14881259
LMArena Russian15041324
LMArena Spanish14981346

Instruction Following Claude Fable 5 leads

Claude Fable 5: 78.6 (#8), Mistral Small: 66.4 (#209)

BenchmarkClaude Fable 5Mistral Small
LMArena Instruction Following15021310
LiveBench Instruction Following—63.7%

Long Context Claude Fable 5 leads

Claude Fable 5: 46.3 (#23), Mistral Small: 40.4 (#156)

BenchmarkClaude Fable 5Mistral Small
LMArena Longer Query15091327

Writing & Preference Claude Fable 5 leads

Claude Fable 5: 75.9 (#5), Mistral Small: 52.5 (#171)

BenchmarkClaude Fable 5Mistral Small
LMArena Text14911338
LMArena Creative Writing14941305
LMArena Multi-Turn15041344
EQ-Bench Creative Writing1943—
EQ-Bench 41340—
LiveBench Language—30.5%

Frequently asked questions

Is Claude Fable 5 better than Mistral Small?

Claude Fable 5 is the stronger model overall, scoring 66.8 to 33.4 on the Noometry Index. Mistral Small costs 76× less per token, which makes it the better buy when Claude Fable 5's lead doesn't matter for your workload.

Which is cheaper, Claude Fable 5 or Mistral Small?

Mistral Small is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Claude Fable 5 lists at $10 and $50.

Is Claude Fable 5 or Mistral Small better for coding?

Claude Fable 5 scores higher on coding benchmarks: 70.6 versus 34.0 in the Noometry coding category.

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 share?

26 benchmarks have published results for both models. Claude Fable 5 has 62 scored results on Noometry and Mistral Small has 39.

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