Noometry

Model comparison

Claude Fable 5 vs Llama 3-8B

Claude Fable 5 is the stronger model overall, scoring 66.8 to 25.5 on the Noometry Index.

Last verified . 22 shared benchmarks.

Claude Fable 5 Anthropic

66.8

Rank #5 Confirmed

Llama 3-8B Meta

25.5

Rank #344 Confirmed

Summary

  • They share 22 benchmarks with published results for both. Claude Fable 5 scores higher in 8 categories and Llama 3-8B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Fable 5 leads 88.5 to 8.8.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Fable 5 and 1.9% for Llama 3-8B.
  • Llama 3-8B has downloadable open weights; the other is API-only.

Side by side

Claude Fable 5Llama 3-8B
ProviderAnthropicMeta
Noometry Index66.825.5
Released2026-06-072024-04-18
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$10—
Output $ / M tokens$50—
Results tracked6234

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Category by category

Coding Claude Fable 5 leads

Claude Fable 5: 70.6 (#4), Llama 3-8B: 31.0 (#289)

BenchmarkClaude Fable 5Llama 3-8B
LMArena Coding15191152
DeepSWE69.9%—
FrontierCode53.5%—
LMArena WebDev1625—
FrontierSWE47%—
SciCode61%—
GSO78.4%—
WeirdML91.9%—
BigCodeBench Instruct—31.9%
MirrorCode63.9%—
BigCodeBench Complete—36.9%
ALE-Bench2,041—
HumanEval+—56.7%
MBPP+—54.8%

Agentic & Tool Use Not comparable

Claude Fable 5: 54.0 (#2), Llama 3-8B: —

BenchmarkClaude Fable 5Llama 3-8B
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), Llama 3-8B: 14.3 (#326)

BenchmarkClaude Fable 5Llama 3-8B
Chess Puzzles41%0%
LMArena Hard Prompts15081133
DTBench98.4%43.9%
Epoch Capabilities Index162.06116.45
ARC-AGI-289.2%—
SimpleBench81.9%—
Kagi LLM Benchmark91.4%—
NYT Connections (extended)92.7%—
ARC-AGI-198.5%—
CritPt28.6%—
EnigmaEval39.3%—
EBR-Bench39.5%—
Mystery Game Puzzles52%—
LMCA61.1%—
Surface Evolver Bench95%—
Adversarial NLI—57.3%
Bench to the Future 30.13—
ForecastBench—58.6
WinoGrande—75.7%

Math Claude Fable 5 leads

Claude Fable 5: 88.5 (#5), Llama 3-8B: 8.8 (#323)

BenchmarkClaude Fable 5Llama 3-8B
OTIS Mock AIME 2024-2025100%1.9%
LMArena Math15191151
FrontierMath (Tiers 1-3)87%—
FrontierMath Tier 490.2%—
ProofBench95%—
MATH Level 5—6.1%
FrontierMath Erdős0%—

Knowledge Claude Fable 5 leads

Claude Fable 5: 62.2 (#25), Llama 3-8B: 7.8 (#308)

BenchmarkClaude Fable 5Llama 3-8B
GPQA Diamond85.9%26.1%
LMArena Expert15341113
SimpleQA Verified70.7%—
ARC (AI2) Challenge—82.8%
MMLU—68.8%
OpenBookQA—82.6%
TriviaQA—67.7%

Multimodal Not comparable

Claude Fable 5: 45.3 (#17), Llama 3-8B: —

BenchmarkClaude Fable 5Llama 3-8B
LMArena Vision1324—
Blueprint-Bench 238.6%—
Furniture Assembly35.8%—
LMArena Document1496—

Multilingual Claude Fable 5 leads

Claude Fable 5: 57.3 (#9), Llama 3-8B: 30.8 (#261)

BenchmarkClaude Fable 5Llama 3-8B
LMArena Non-English14811098
LMArena Chinese15431076
LMArena French15051159
LMArena German14861104
LMArena Japanese1506967
LMArena Korean14881004
LMArena Russian15041109
LMArena Spanish14981173

Instruction Following Claude Fable 5 leads

Claude Fable 5: 78.6 (#8), Llama 3-8B: 58.4 (#260)

BenchmarkClaude Fable 5Llama 3-8B
LMArena Instruction Following15021127

Long Context Claude Fable 5 leads

Claude Fable 5: 46.3 (#23), Llama 3-8B: 34.2 (#251)

BenchmarkClaude Fable 5Llama 3-8B
LMArena Longer Query15091128

Writing & Preference Claude Fable 5 leads

Claude Fable 5: 75.9 (#5), Llama 3-8B: 37.5 (#256)

BenchmarkClaude Fable 5Llama 3-8B
LMArena Text14911166
LMArena Creative Writing14941150
LMArena Multi-Turn15041152
EQ-Bench Creative Writing1943—
EQ-Bench 41340—

Frequently asked questions

Is Claude Fable 5 better than Llama 3-8B?

Claude Fable 5 is the stronger model overall, scoring 66.8 to 25.5 on the Noometry Index.

Is Claude Fable 5 or Llama 3-8B better for coding?

Claude Fable 5 scores higher on coding benchmarks: 70.6 versus 31.0 in the Noometry coding category.

How many benchmarks do Claude Fable 5 and Llama 3-8B share?

22 benchmarks have published results for both models. Claude Fable 5 has 62 scored results on Noometry and Llama 3-8B has 34.

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