Noometry

Model comparison

Claude Fable 5.1 vs Laguna M.1

Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 32.5 on the Noometry Index.

Last verified . 2 shared benchmarks.

Claude Fable 5.1 Anthropic

69.0

Rank #2 Confirmed

Laguna M.1 Poolside

32.5

Rank #256 Reported

Summary

  • They share 2 benchmarks with published results for both. Claude Fable 5.1 scores higher in 3 categories and Laguna M.1 in 0 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Fable 5.1 leads 89.6 to 21.1.
  • The biggest single-benchmark swing is ProofBench: 100% for Claude Fable 5.1 and 0% for Laguna M.1.
  • Claude Fable 5.1 accepts more context: 1M tokens versus 262K.
  • Laguna M.1 has downloadable open weights; the other is API-only.

Side by side

Claude Fable 5.1Laguna M.1
ProviderAnthropicPoolside
Noometry Index69.032.5
Released2026-09-012026-04-28
WeightsProprietaryOpen
Context window1M262K
Max output128K33K
Input $ / M tokens$10—
Output $ / M tokens$50—
Results tracked523

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Category by category

Coding Claude Fable 5.1 leads

Claude Fable 5.1: 74.7 (#1), Laguna M.1: 36.6 (#204)

BenchmarkClaude Fable 5.1Laguna M.1
LMArena WebDev17441349
FrontierCode50.9%—
CursorBench51.8%—
FrontierSWE56.3%—
SciCode63.1%—
GSO88.2%—
WeirdML92.9%—
LMArena Coding1528—
MirrorCode73.3%—
ALE-Bench2,143—

Agentic & Tool Use Not comparable

Claude Fable 5.1: 50.7 (#5), Laguna M.1: —

BenchmarkClaude Fable 5.1Laguna M.1
APEX-Agents68.6%—
Remote Labor Index17.9%—
GDP.pdf29.6%—
Vending-Bench 25,422—

Reasoning Claude Fable 5.1 leads

Claude Fable 5.1: 76.7 (#7), Laguna M.1: 23.1 (#184)

BenchmarkClaude Fable 5.1Laguna M.1
ARC-AGI-290%—
NYT Connections (extended)90%—
ARC-AGI-197.5%—
CritPt31.1%—
Chess Puzzles47%—
EBR-Bench57.1%—
LMArena Hard Prompts1526—
Mystery Game Puzzles58%—
DTBench97.6%—
LMCA65.5%—
Surface Evolver Bench—15.6%
Epoch Capabilities Index164.7—

Math Claude Fable 5.1 leads

Claude Fable 5.1: 89.6 (#4), Laguna M.1: 21.1 (#283)

BenchmarkClaude Fable 5.1Laguna M.1
ProofBench100%0%
FrontierMath (Tiers 1-3)90.2%—
FrontierMath Tier 487.8%—
OTIS Mock AIME 2024-2025100%—
LMArena Math1525—
FrontierMath Erdős0%—

Knowledge Not comparable

Claude Fable 5.1: 69.6 (#6), Laguna M.1: —

BenchmarkClaude Fable 5.1Laguna M.1
Humanity's Last Exam46.5%—
SimpleQA Verified70.8%—
LMArena Expert1535—

Multimodal Not comparable

Claude Fable 5.1: 53.9 (#4), Laguna M.1: —

BenchmarkClaude Fable 5.1Laguna M.1
LMArena Vision1318—
Blueprint-Bench 241.9%—
Furniture Assembly70%—
LMArena Document1513—

Multilingual Not comparable

Claude Fable 5.1: 59.1 (#3), Laguna M.1: —

BenchmarkClaude Fable 5.1Laguna M.1
LMArena Non-English1507—
LMArena Chinese1586—
LMArena French1525—
LMArena German1500—
LMArena Japanese1543—
LMArena Korean1534—
LMArena Russian1521—
LMArena Spanish1516—

Instruction Following Not comparable

Claude Fable 5.1: 79.2 (#6), Laguna M.1: —

BenchmarkClaude Fable 5.1Laguna M.1
LMArena Instruction Following1517—

Long Context Not comparable

Claude Fable 5.1: 46.7 (#20), Laguna M.1: —

BenchmarkClaude Fable 5.1Laguna M.1
LMArena Longer Query1522—

Writing & Preference Not comparable

Claude Fable 5.1: 79.2 (#2), Laguna M.1: —

BenchmarkClaude Fable 5.1Laguna M.1
LMArena Text1510—
LMArena Creative Writing1507—
EQ-Bench Creative Writing2162—
LMArena Multi-Turn1492—

Frequently asked questions

Is Claude Fable 5.1 better than Laguna M.1?

Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 32.5 on the Noometry Index.

Is Claude Fable 5.1 or Laguna M.1 better for coding?

Claude Fable 5.1 scores higher on coding benchmarks: 74.7 versus 36.6 in the Noometry coding category.

Which has the bigger context window?

Claude Fable 5.1 does, with 1M tokens against 262K.

How many benchmarks do Claude Fable 5.1 and Laguna M.1 share?

2 benchmarks have published results for both models. Claude Fable 5.1 has 52 scored results on Noometry and Laguna M.1 has 3.

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