Model comparison
Claude Fable 5.1 vs Llama2 70b Steerlm Chat
Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 31.8 on the Noometry Index.
Last verified . 9 shared benchmarks.
NVIDIASummary
- They share 9 benchmarks with published results for both. Claude Fable 5.1 scores higher in 7 categories and Llama2 70b Steerlm Chat in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Fable 5.1 leads 89.6 to 31.3.
- Llama2 70b Steerlm Chat has downloadable open weights; the other is API-only.
Side by side
| Claude Fable 5.1 | Llama2 70b Steerlm Chat | |
|---|---|---|
| Provider | Anthropic | NVIDIA |
| Noometry Index | 69.0 | 31.8 |
| Released | 2026-09-01 | — |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $10 | — |
| Output $ / M tokens | $50 | — |
| Results tracked | 52 | 9 |
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Category by category
Coding Claude Fable 5.1 leads
Claude Fable 5.1: 74.7 (#1), Llama2 70b Steerlm Chat: 29.9 (#300)
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Coding | 1528 | 1025 |
| FrontierCode | 50.9% | — |
| CursorBench | 51.8% | — |
| LMArena WebDev | 1744 | — |
| FrontierSWE | 56.3% | — |
| SciCode | 63.1% | — |
| GSO | 88.2% | — |
| WeirdML | 92.9% | — |
| MirrorCode | 73.3% | — |
| ALE-Bench | 2,143 | — |
Agentic & Tool Use Not comparable
Claude Fable 5.1: 50.7 (#5), Llama2 70b Steerlm Chat: —
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| APEX-Agents | 68.6% | — |
| Remote Labor Index | 17.9% | — |
| GDP.pdf | 29.6% | — |
| Vending-Bench 2 | 5,422 | — |
Reasoning Claude Fable 5.1 leads
Claude Fable 5.1: 76.7 (#7), Llama2 70b Steerlm Chat: 20.0 (#246)
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Hard Prompts | 1526 | 1047 |
| ARC-AGI-2 | 90% | — |
| NYT Connections (extended) | 90% | — |
| ARC-AGI-1 | 97.5% | — |
| CritPt | 31.1% | — |
| Chess Puzzles | 47% | — |
| EBR-Bench | 57.1% | — |
| Mystery Game Puzzles | 58% | — |
| DTBench | 97.6% | — |
| LMCA | 65.5% | — |
| Epoch Capabilities Index | 164.7 | — |
Math Claude Fable 5.1 leads
Claude Fable 5.1: 89.6 (#4), Llama2 70b Steerlm Chat: 31.3 (#226)
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Math | 1525 | 1072 |
| FrontierMath (Tiers 1-3) | 90.2% | — |
| FrontierMath Tier 4 | 87.8% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| FrontierMath Erdős | 0% | — |
Knowledge Not comparable
Claude Fable 5.1: 69.6 (#6), Llama2 70b Steerlm Chat: —
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| Humanity's Last Exam | 46.5% | — |
| SimpleQA Verified | 70.8% | — |
| LMArena Expert | 1535 | — |
Multimodal Not comparable
Claude Fable 5.1: 53.9 (#4), Llama2 70b Steerlm Chat: —
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Vision | 1318 | — |
| Blueprint-Bench 2 | 41.9% | — |
| Furniture Assembly | 70% | — |
| LMArena Document | 1513 | — |
Multilingual Claude Fable 5.1 leads
Claude Fable 5.1: 59.1 (#3), Llama2 70b Steerlm Chat: 28.8 (#270)
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Non-English | 1507 | 1063 |
| LMArena Chinese | 1586 | — |
| LMArena French | 1525 | — |
| LMArena German | 1500 | — |
| LMArena Japanese | 1543 | — |
| LMArena Korean | 1534 | — |
| LMArena Russian | 1521 | — |
| LMArena Spanish | 1516 | — |
Instruction Following Claude Fable 5.1 leads
Claude Fable 5.1: 79.2 (#6), Llama2 70b Steerlm Chat: 54.2 (#279)
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Instruction Following | 1517 | 1060 |
Long Context Claude Fable 5.1 leads
Claude Fable 5.1: 46.7 (#20), Llama2 70b Steerlm Chat: 30.4 (#288)
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Longer Query | 1522 | 998 |
Writing & Preference Claude Fable 5.1 leads
Claude Fable 5.1: 79.2 (#2), Llama2 70b Steerlm Chat: 31.6 (#283)
| Benchmark | Claude Fable 5.1 | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Text | 1510 | 1098 |
| LMArena Creative Writing | 1507 | 1091 |
| LMArena Multi-Turn | 1492 | 1058 |
| EQ-Bench Creative Writing | 2162 | — |
Frequently asked questions
Is Claude Fable 5.1 better than Llama2 70b Steerlm Chat?
Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 31.8 on the Noometry Index.
Is Claude Fable 5.1 or Llama2 70b Steerlm Chat better for coding?
Claude Fable 5.1 scores higher on coding benchmarks: 74.7 versus 29.9 in the Noometry coding category.
How many benchmarks do Claude Fable 5.1 and Llama2 70b Steerlm Chat share?
9 benchmarks have published results for both models. Claude Fable 5.1 has 52 scored results on Noometry and Llama2 70b Steerlm Chat has 9.