Model comparison
Claude Opus 5.5 vs Llama 2-13B
Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 29.6 on the Noometry Index.
Last verified . 16 shared benchmarks.
MetaSummary
- They share 16 benchmarks with published results for both. Claude Opus 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 reasoning, where Claude Opus 5.5 leads 80.2 to 12.8.
- The biggest single-benchmark swing is DTBench: 98.9% for Claude Opus 5.5 and 42.2% for Llama 2-13B.
- Llama 2-13B has downloadable open weights; the other is API-only.
Side by side
| Claude Opus 5.5 | Llama 2-13B | |
|---|---|---|
| Provider | Anthropic | Meta |
| Noometry Index | 68.6 | 29.6 |
| Released | 2026-09-22 | 2023-07-18 |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $4 | — |
| Output $ / M tokens | $20 | — |
| Results tracked | 44 | 32 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Claude Opus 5.5 leads
Claude Opus 5.5: 71.9 (#3), Llama 2-13B: 30.9 (#291)
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Coding | 1547 | 1062 |
| FrontierCode | 54.6% | — |
| CursorBench | 57.8% | — |
| LMArena WebDev | 1813 | — |
| FrontierSWE | 62.3% | — |
| SciCode | 66.9% | — |
| MirrorCode | 77.4% | — |
| ALE-Bench | 2,147 | — |
Agentic & Tool Use Not comparable
Claude Opus 5.5: 45.3 (#15), Llama 2-13B: —
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| APEX-Agents | 73.5% | — |
| GDP.pdf | 30.6% | — |
| Vending-Bench 2 | 9,235 | — |
Reasoning Claude Opus 5.5 leads
Claude Opus 5.5: 80.2 (#3), Llama 2-13B: 12.8 (#337)
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Hard Prompts | 1535 | 1051 |
| DTBench | 98.9% | 42.2% |
| Epoch Capabilities Index | 167.33 | 106.17 |
| ARC-AGI-2 | 93.3% | — |
| NYT Connections (extended) | 88.5% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 31.7% | — |
| Chess Puzzles | — | 0% |
| EBR-Bench | 71.4% | — |
| Mystery Game Puzzles | 71% | — |
| LMCA | 68.2% | — |
| BIG-Bench Hard | — | 58.2% |
| HellaSwag | — | 80.7% |
| LAMBADA | — | 76.5% |
| PIQA | — | 80.8% |
| WinoGrande | — | 72.8% |
Math Claude Opus 5.5 leads
Claude Opus 5.5: 91.8 (#3), Llama 2-13B: 31.1 (#229)
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Math | 1506 | 1065 |
| FrontierMath (Tiers 1-3) | 91.2% | — |
| FrontierMath Tier 4 | 95% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| FrontierMath Erdős | 2.9% | — |
| GSM8K | — | 36.9% |
Knowledge Claude Opus 5.5 leads
Claude Opus 5.5: 66.4 (#10), Llama 2-13B: 28.1 (#249)
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Expert | 1547 | 1030 |
| GPQA Diamond | 90.6% | — |
| SimpleQA Verified | 72.2% | — |
| ARC (AI2) Challenge | — | 60.3% |
| BoolQ | — | 82.4% |
| MMLU | — | 55.6% |
| OpenBookQA | — | 57% |
| TriviaQA | — | 79.6% |
Multimodal Not comparable
Claude Opus 5.5: 57.8 (#1), Llama 2-13B: —
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Vision | 1321 | — |
| Blueprint-Bench 2 | 51.2% | — |
| Furniture Assembly | 83.3% | — |
| ScienceQA | — | 55.8% |
Multilingual Claude Opus 5.5 leads
Claude Opus 5.5: 59.1 (#2), Llama 2-13B: 26.5 (#279)
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Non-English | 1507 | 1024 |
| LMArena Chinese | 1588 | 1001 |
| LMArena French | 1514 | 1044 |
| LMArena Russian | 1520 | 1055 |
| LMArena Spanish | 1507 | 1087 |
| LMArena German | — | 1009 |
| LMArena Japanese | — | 894 |
| LMArena Korean | — | 953 |
Instruction Following Claude Opus 5.5 leads
Claude Opus 5.5: 80.0 (#3), Llama 2-13B: 53.3 (#287)
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Instruction Following | 1537 | 1045 |
Long Context Claude Opus 5.5 leads
Claude Opus 5.5: 47.1 (#19), Llama 2-13B: 32.3 (#269)
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Longer Query | 1532 | 1064 |
Writing & Preference Claude Opus 5.5 leads
Claude Opus 5.5: 78.2 (#3), Llama 2-13B: 29.8 (#289)
| Benchmark | Claude Opus 5.5 | Llama 2-13B |
|---|---|---|
| LMArena Text | 1515 | 1084 |
| LMArena Creative Writing | 1533 | 1047 |
| LMArena Multi-Turn | 1499 | 1050 |
| EQ-Bench Creative Writing | 2050 | — |
Frequently asked questions
Is Claude Opus 5.5 better than Llama 2-13B?
Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 29.6 on the Noometry Index.
Is Claude Opus 5.5 or Llama 2-13B better for coding?
Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 30.9 in the Noometry coding category.
How many benchmarks do Claude Opus 5.5 and Llama 2-13B share?
16 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Llama 2-13B has 32.