Noometry

Model comparison

Claude Fable 5.1 vs Yi-34B

Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 27.8 on the Noometry Index.

Last verified . 18 shared benchmarks.

Claude Fable 5.1 Anthropic

69.0

Rank #2 Confirmed

Yi-34B 01.AI

27.8

Rank #329 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Claude Fable 5.1 scores higher in 8 categories and Yi-34B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Fable 5.1 leads 89.6 to 21.6.
  • Yi-34B has downloadable open weights; the other is API-only.

Side by side

Claude Fable 5.1Yi-34B
ProviderAnthropic01.AI
Noometry Index69.027.8
Released2026-09-012023-11-02
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$10—
Output $ / M tokens$50—
Results tracked5223

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Category by category

Coding Claude Fable 5.1 leads

Claude Fable 5.1: 74.7 (#1), Yi-34B: 32.3 (#274)

BenchmarkClaude Fable 5.1Yi-34B
LMArena Coding15281112
FrontierCode50.9%—
CursorBench51.8%—
LMArena WebDev1744—
FrontierSWE56.3%—
SciCode63.1%—
GSO88.2%—
WeirdML92.9%—
MirrorCode73.3%—
ALE-Bench2,143—

Agentic & Tool Use Not comparable

Claude Fable 5.1: 50.7 (#5), Yi-34B: —

BenchmarkClaude Fable 5.1Yi-34B
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), Yi-34B: 21.2 (#226)

BenchmarkClaude Fable 5.1Yi-34B
LMArena Hard Prompts15261104
Epoch Capabilities Index164.7117.39
ARC-AGI-290%—
NYT Connections (extended)90%—
ARC-AGI-197.5%—
CritPt31.1%—
Chess Puzzles47%—
EBR-Bench57.1%—
Mystery Game Puzzles58%—
DTBench97.6%—
LMCA65.5%—
BIG-Bench Hard—71.7%

Math Claude Fable 5.1 leads

Claude Fable 5.1: 89.6 (#4), Yi-34B: 21.6 (#282)

BenchmarkClaude Fable 5.1Yi-34B
LMArena Math15251114
FrontierMath (Tiers 1-3)90.2%—
FrontierMath Tier 487.8%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
MATH Level 5—5.1%
FrontierMath Erdős0%—
GSM8K—76%

Knowledge Claude Fable 5.1 leads

Claude Fable 5.1: 69.6 (#6), Yi-34B: 7.5 (#309)

BenchmarkClaude Fable 5.1Yi-34B
LMArena Expert15351061
GPQA Diamond—14.7%
Humanity's Last Exam46.5%—
SimpleQA Verified70.8%—
MMLU—76.3%

Multimodal Not comparable

Claude Fable 5.1: 53.9 (#4), Yi-34B: —

BenchmarkClaude Fable 5.1Yi-34B
LMArena Vision1318—
Blueprint-Bench 241.9%—
Furniture Assembly70%—
LMArena Document1513—

Multilingual Claude Fable 5.1 leads

Claude Fable 5.1: 59.1 (#3), Yi-34B: 29.7 (#264)

BenchmarkClaude Fable 5.1Yi-34B
LMArena Non-English15071079
LMArena Chinese15861176
LMArena French15251081
LMArena German15001042
LMArena Japanese1543993
LMArena Korean1534959
LMArena Russian15211050
LMArena Spanish15161070

Instruction Following Claude Fable 5.1 leads

Claude Fable 5.1: 79.2 (#6), Yi-34B: 56.2 (#274)

BenchmarkClaude Fable 5.1Yi-34B
LMArena Instruction Following15171091

Long Context Claude Fable 5.1 leads

Claude Fable 5.1: 46.7 (#20), Yi-34B: 33.2 (#264)

BenchmarkClaude Fable 5.1Yi-34B
LMArena Longer Query15221094

Writing & Preference Claude Fable 5.1 leads

Claude Fable 5.1: 79.2 (#2), Yi-34B: 34.1 (#273)

BenchmarkClaude Fable 5.1Yi-34B
LMArena Text15101129
LMArena Creative Writing15071108
LMArena Multi-Turn14921113
EQ-Bench Creative Writing2162—

Frequently asked questions

Is Claude Fable 5.1 better than Yi-34B?

Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 27.8 on the Noometry Index.

Is Claude Fable 5.1 or Yi-34B better for coding?

Claude Fable 5.1 scores higher on coding benchmarks: 74.7 versus 32.3 in the Noometry coding category.

How many benchmarks do Claude Fable 5.1 and Yi-34B share?

18 benchmarks have published results for both models. Claude Fable 5.1 has 52 scored results on Noometry and Yi-34B has 23.

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