Noometry

Model comparison

Claude Opus 5.5 vs Llama 13b

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 24.4 on the Noometry Index.

Last verified . 9 shared benchmarks.

Claude Opus 5.5 Anthropic

68.6

Rank #3 Confirmed

Llama 13b Meta

24.4

Rank #348 Confirmed

Summary

  • They share 9 benchmarks with published results for both. Claude Opus 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 reasoning, where Claude Opus 5.5 leads 80.2 to 14.0.
  • Llama 13b has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5Llama 13b
ProviderAnthropicMeta
Noometry Index68.624.4
Released2026-09-222023-02-24
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked4421

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.9 (#3), Llama 13b: 21.4 (#337)

BenchmarkClaude Opus 5.5Llama 13b
LMArena Coding1547683
FrontierCode54.6%—
CursorBench57.8%—
LMArena WebDev1813—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—
ALE-Bench2,147—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#15), Llama 13b: —

BenchmarkClaude Opus 5.5Llama 13b
APEX-Agents73.5%—
GDP.pdf30.6%—
Vending-Bench 29,235—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 80.2 (#3), Llama 13b: 14.0 (#329)

BenchmarkClaude Opus 5.5Llama 13b
LMArena Hard Prompts1535728
Epoch Capabilities Index167.33100.58
ARC-AGI-293.3%—
NYT Connections (extended)88.5%—
ARC-AGI-198.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
BIG-Bench Hard—37.9%
HellaSwag—79.2%
LAMBADA—75.2%
PIQA—80.1%
WinoGrande—73%

Math Claude Opus 5.5 leads

Claude Opus 5.5: 91.8 (#3), Llama 13b: 26.7 (#256)

BenchmarkClaude Opus 5.5Llama 13b
LMArena Math1506838
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
FrontierMath Erdős2.9%—
GSM8K—20.6%

Knowledge Not comparable

Claude Opus 5.5: 66.4 (#10), Llama 13b: —

BenchmarkClaude Opus 5.5Llama 13b
GPQA Diamond90.6%—
SimpleQA Verified72.2%—
LMArena Expert1547—
ARC (AI2) Challenge—52.7%
BoolQ—78.7%
MMLU—47.7%
OpenBookQA—56.4%
TriviaQA—77.9%

Multimodal Not comparable

Claude Opus 5.5: 57.8 (#1), Llama 13b: —

BenchmarkClaude Opus 5.5Llama 13b
LMArena Vision1321—
Blueprint-Bench 251.2%—
Furniture Assembly83.3%—
ScienceQA—43.3%

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.1 (#2), Llama 13b: 16.6 (#297)

BenchmarkClaude Opus 5.5Llama 13b
LMArena Non-English1507819
LMArena Chinese1588—
LMArena French1514—
LMArena Russian1520—
LMArena Spanish1507—

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.0 (#3), Llama 13b: 36.7 (#305)

BenchmarkClaude Opus 5.5Llama 13b
LMArena Instruction Following1537781

Long Context Not comparable

Claude Opus 5.5: 47.1 (#19), Llama 13b: —

BenchmarkClaude Opus 5.5Llama 13b
LMArena Longer Query1532—

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.2 (#3), Llama 13b: 13.8 (#312)

BenchmarkClaude Opus 5.5Llama 13b
LMArena Text1515834
LMArena Creative Writing1533794
LMArena Multi-Turn1499753
EQ-Bench Creative Writing2050—

Frequently asked questions

Is Claude Opus 5.5 better than Llama 13b?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 24.4 on the Noometry Index.

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

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 21.4 in the Noometry coding category.

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

9 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Llama 13b has 21.

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