Noometry

Model comparison

Claude Sonnet 5.5 vs Llama 13b

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 24.4 on the Noometry Index.

Last verified . 9 shared benchmarks.

Claude Sonnet 5.5 Anthropic

61.9

Rank #10 Confirmed

Llama 13b Meta

24.4

Rank #348 Confirmed

Summary

  • They share 9 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 6 categories and Llama 13b in 0 categories; 6 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 26.7.
  • Llama 13b has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5.5Llama 13b
ProviderAnthropicMeta
Noometry Index61.924.4
Released2026-09-282023-02-24
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked3221

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 67.3 (#6), Llama 13b: 21.4 (#337)

BenchmarkClaude Sonnet 5.5Llama 13b
LMArena Coding1513683
FrontierCode52.1%—
CursorBench55.5%—
LMArena WebDev1774—
FrontierSWE61.9%—
SciCode61%—
ALE-Bench1,819—

Agentic & Tool Use Not comparable

Claude Sonnet 5.5: 45.0 (#16), Llama 13b: —

BenchmarkClaude Sonnet 5.5Llama 13b
APEX-Agents75.5%—

Reasoning Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 54.0 (#28), Llama 13b: 14.0 (#329)

BenchmarkClaude Sonnet 5.5Llama 13b
LMArena Hard Prompts1495728
Epoch Capabilities Index165.03100.58
NYT Connections (extended)80.5%—
CritPt31.4%—
Mystery Game Puzzles65%—
BIG-Bench Hard—37.9%
HellaSwag—79.2%
LAMBADA—75.2%
PIQA—80.1%
WinoGrande—73%

Math Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 87.9 (#6), Llama 13b: 26.7 (#256)

BenchmarkClaude Sonnet 5.5Llama 13b
LMArena Math1510838
FrontierMath (Tiers 1-3)88.8%—
FrontierMath Tier 480.5%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
FrontierMath Erdős2.9%—
GSM8K—20.6%

Knowledge Not comparable

Claude Sonnet 5.5: 66.0 (#12), Llama 13b: —

BenchmarkClaude Sonnet 5.5Llama 13b
GPQA Diamond95.6%—
SimpleQA Verified46.5%—
LMArena Expert1540—
ARC (AI2) Challenge—52.7%
BoolQ—78.7%
MMLU—47.7%
OpenBookQA—56.4%
TriviaQA—77.9%

Multimodal Not comparable

Claude Sonnet 5.5: 51.5 (#6), Llama 13b: —

BenchmarkClaude Sonnet 5.5Llama 13b
LMArena Vision1289—
Furniture Assembly75%—
ScienceQA—43.3%

Multilingual Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 55.3 (#30), Llama 13b: 16.6 (#297)

BenchmarkClaude Sonnet 5.5Llama 13b
LMArena Non-English1452819
LMArena Chinese1522—
LMArena Russian1451—

Instruction Following Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 78.3 (#11), Llama 13b: 36.7 (#305)

BenchmarkClaude Sonnet 5.5Llama 13b
LMArena Instruction Following1495781

Long Context Not comparable

Claude Sonnet 5.5: 45.9 (#28), Llama 13b: —

BenchmarkClaude Sonnet 5.5Llama 13b
LMArena Longer Query1498—

Writing & Preference Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#40), Llama 13b: 13.8 (#312)

BenchmarkClaude Sonnet 5.5Llama 13b
LMArena Text1471834
LMArena Creative Writing1465794
LMArena Multi-Turn1474753

Frequently asked questions

Is Claude Sonnet 5.5 better than Llama 13b?

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 24.4 on the Noometry Index.

Is Claude Sonnet 5.5 or Llama 13b better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 21.4 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5.5 and Llama 13b share?

9 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Llama 13b has 21.

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