Noometry

Model comparison

Claude Sonnet 5.5 vs Llama 2-13B

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 29.6 on the Noometry Index.

Last verified . 13 shared benchmarks.

Claude Sonnet 5.5 Anthropic

61.9

Rank #10 Confirmed

Llama 2-13B Meta

29.6

Rank #309 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 8 categories and Llama 2-13B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 31.1.
  • Llama 2-13B has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5.5Llama 2-13B
ProviderAnthropicMeta
Noometry Index61.929.6
Released2026-09-282023-07-18
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked3232

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 67.3 (#6), Llama 2-13B: 30.9 (#291)

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Coding15131062
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 2-13B: —

BenchmarkClaude Sonnet 5.5Llama 2-13B
APEX-Agents75.5%—

Reasoning Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 54.0 (#28), Llama 2-13B: 12.8 (#337)

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Hard Prompts14951051
Epoch Capabilities Index165.03106.17
NYT Connections (extended)80.5%—
CritPt31.4%—
Chess Puzzles—0%
Mystery Game Puzzles65%—
DTBench—42.2%
BIG-Bench Hard—58.2%
HellaSwag—80.7%
LAMBADA—76.5%
PIQA—80.8%
WinoGrande—72.8%

Math Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 87.9 (#6), Llama 2-13B: 31.1 (#229)

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Math15101065
FrontierMath (Tiers 1-3)88.8%—
FrontierMath Tier 480.5%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
FrontierMath Erdős2.9%—
GSM8K—36.9%

Knowledge Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#12), Llama 2-13B: 28.1 (#249)

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Expert15401030
GPQA Diamond95.6%—
SimpleQA Verified46.5%—
ARC (AI2) Challenge—60.3%
BoolQ—82.4%
MMLU—55.6%
OpenBookQA—57%
TriviaQA—79.6%

Multimodal Not comparable

Claude Sonnet 5.5: 51.5 (#6), Llama 2-13B: —

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Vision1289—
Furniture Assembly75%—
ScienceQA—55.8%

Multilingual Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 55.3 (#30), Llama 2-13B: 26.5 (#279)

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Non-English14521024
LMArena Chinese15221001
LMArena Russian14511055
LMArena French—1044
LMArena German—1009
LMArena Japanese—894
LMArena Korean—953
LMArena Spanish—1087

Instruction Following Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 78.3 (#11), Llama 2-13B: 53.3 (#287)

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Instruction Following14951045

Long Context Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 45.9 (#28), Llama 2-13B: 32.3 (#269)

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Longer Query14981064

Writing & Preference Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#40), Llama 2-13B: 29.8 (#289)

BenchmarkClaude Sonnet 5.5Llama 2-13B
LMArena Text14711084
LMArena Creative Writing14651047
LMArena Multi-Turn14741050

Frequently asked questions

Is Claude Sonnet 5.5 better than Llama 2-13B?

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 29.6 on the Noometry Index.

Is Claude Sonnet 5.5 or Llama 2-13B better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 30.9 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5.5 and Llama 2-13B share?

13 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Llama 2-13B has 32.

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