Noometry

Model comparison

Claude Fable 5.1 vs Mistral Large

Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 31.9 on the Noometry Index. Mistral Large costs 6.7× less per token, which makes it the better buy when Claude Fable 5.1's lead doesn't matter for your workload.

Last verified . 25 shared benchmarks.

Claude Fable 5.1 Anthropic

69.0

Rank #2 Confirmed

Mistral Large Mistral AI

31.9

Rank #263 Confirmed

Summary

  • They share 25 benchmarks with published results for both. Claude Fable 5.1 scores higher in 9 categories and Mistral Large in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Fable 5.1 leads 89.6 to 18.2.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Fable 5.1 and 8.5% for Mistral Large.
  • Mistral Large is cheaper at $2 / $6 per million input/output tokens, against $10 / $50 for Claude Fable 5.1.
  • Claude Fable 5.1 accepts more context: 1M tokens versus 131K.
  • Mistral Large has downloadable open weights; the other is API-only.

Side by side

Claude Fable 5.1Mistral Large
ProviderAnthropicMistral AI
Noometry Index69.031.9
Released2026-09-012024-02-26
WeightsProprietaryOpen
Context window1M131K
Max output128K16K
Input $ / M tokens$10$2
Output $ / M tokens$50$6
Results tracked5251

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Category by category

Coding Claude Fable 5.1 leads

Claude Fable 5.1: 74.7 (#1), Mistral Large: 34.3 (#240)

BenchmarkClaude Fable 5.1Mistral Large
SciCode63.1%36.2%
LMArena Coding15281277
ALE-Bench2,143264.7
FrontierCode50.9%—
CursorBench51.8%—
LMArena WebDev1744—
FrontierSWE56.3%—
GSO88.2%—
WeirdML92.9%—
BigCodeBench Instruct—30%
LiveBench Coding—47.1%
MirrorCode73.3%—
BigCodeBench Complete—38.3%
HumanEval+—62.2%
MBPP+—59.5%

Agentic & Tool Use Claude Fable 5.1 leads

Claude Fable 5.1: 50.7 (#5), Mistral Large: 28.6 (#89)

BenchmarkClaude Fable 5.1Mistral Large
APEX-Agents68.6%—
Berkeley Function Calling Leaderboard—38.4%
Remote Labor Index17.9%—
GDP.pdf29.6%—
Vending-Bench 25,422—

Reasoning Claude Fable 5.1 leads

Claude Fable 5.1: 76.7 (#7), Mistral Large: 15.8 (#310)

BenchmarkClaude Fable 5.1Mistral Large
CritPt31.1%0%
LMArena Hard Prompts15261257
DTBench97.6%65.1%
LMCA65.5%16.7%
Epoch Capabilities Index164.7128.52
ARC-AGI-290%—
SimpleBench—22.5%
NYT Connections (extended)90%—
ARC-AGI-197.5%—
Chess Puzzles47%—
EBR-Bench57.1%—
LiveBench Reasoning—43.5%
Mystery Game Puzzles58%—
LiveBench Data Analysis—50.1%
ForecastBench—57.1
LiveBench—48.4%

Math Claude Fable 5.1 leads

Claude Fable 5.1: 89.6 (#4), Mistral Large: 18.2 (#291)

BenchmarkClaude Fable 5.1Mistral Large
OTIS Mock AIME 2024-2025100%8.5%
LMArena Math15251262
FrontierMath (Tiers 1-3)90.2%—
FrontierMath Tier 487.8%—
ProofBench100%—
Omni-MATH—28.1%
LiveBench Math—42.5%
MATH Level 5—50.3%
FrontierMath (Feb 2025 set)—0.3%
FrontierMath Erdős0%—

Knowledge Claude Fable 5.1 leads

Claude Fable 5.1: 69.6 (#6), Mistral Large: 30.1 (#230)

BenchmarkClaude Fable 5.1Mistral Large
LMArena Expert15351232
GPQA Diamond—51.3%
Humanity's Last Exam46.5%—
SimpleQA Verified70.8%—
MMLU-Pro—59.9%
Confabulations—21.4%
Vectara Hallucination Rate—4.5%
GPQA (HELM)—43.5%
MMLU—80%

Multimodal Not comparable

Claude Fable 5.1: 53.9 (#4), Mistral Large: —

BenchmarkClaude Fable 5.1Mistral Large
LMArena Vision1318—
Blueprint-Bench 241.9%—
Furniture Assembly70%—
LMArena Document1513—

Multilingual Claude Fable 5.1 leads

Claude Fable 5.1: 59.1 (#3), Mistral Large: 40.0 (#219)

BenchmarkClaude Fable 5.1Mistral Large
LMArena Non-English15071237
LMArena Chinese15861240
LMArena French15251325
LMArena German15001254
LMArena Japanese15431188
LMArena Korean15341202
LMArena Russian15211257
LMArena Spanish15161268

Instruction Following Claude Fable 5.1 leads

Claude Fable 5.1: 79.2 (#6), Mistral Large: 67.9 (#191)

BenchmarkClaude Fable 5.1Mistral Large
LMArena Instruction Following15171249
LiveBench Instruction Following—67.9%
IFEval—87.7%

Long Context Claude Fable 5.1 leads

Claude Fable 5.1: 46.7 (#20), Mistral Large: 38.3 (#199)

BenchmarkClaude Fable 5.1Mistral Large
LMArena Longer Query15221261

Writing & Preference Claude Fable 5.1 leads

Claude Fable 5.1: 79.2 (#2), Mistral Large: 40.7 (#242)

BenchmarkClaude Fable 5.1Mistral Large
LMArena Text15101266
LMArena Creative Writing15071243
EQ-Bench Creative Writing2162985
LMArena Multi-Turn14921260
Short-Story Creative Writing—69%
WildBench—80.1%
LiveBench Language—39.4%

Frequently asked questions

Is Claude Fable 5.1 better than Mistral Large?

Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 31.9 on the Noometry Index. Mistral Large costs 6.7× less per token, which makes it the better buy when Claude Fable 5.1's lead doesn't matter for your workload.

Which is cheaper, Claude Fable 5.1 or Mistral Large?

Mistral Large is cheaper. It lists at $2 per million input tokens and $6 per million output tokens; Claude Fable 5.1 lists at $10 and $50.

Is Claude Fable 5.1 or Mistral Large better for coding?

Claude Fable 5.1 scores higher on coding benchmarks: 74.7 versus 34.3 in the Noometry coding category.

Which has the bigger context window?

Claude Fable 5.1 does, with 1M tokens against 131K.

How many benchmarks do Claude Fable 5.1 and Mistral Large share?

25 benchmarks have published results for both models. Claude Fable 5.1 has 52 scored results on Noometry and Mistral Large has 51.

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