Model comparison
Claude Fable 5.1 vs Gemma 2 9B
Claude Fable 5.1 is the stronger model overall, scoring 68.5 to 25.7 on the Noometry Index.
Last verified . 19 shared benchmarks.
GoogleSummary
- They share 19 benchmarks with published results for both. Claude Fable 5.1 scores higher in 8 categories and Gemma 2 9B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Fable 5.1 leads 89.5 to 9.3.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Fable 5.1 and 0.6% for Gemma 2 9B.
- Gemma 2 9B has downloadable open weights; the other is API-only.
Side by side
| Claude Fable 5.1 | Gemma 2 9B | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 68.5 | 25.7 |
| Released | 2026-09-01 | 2024-06-24 |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $10 | — |
| Output $ / M tokens | $50 | — |
| Results tracked | 50 | 35 |
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Category by category
Coding Claude Fable 5.1 leads
Claude Fable 5.1: 70.5 (#2), Gemma 2 9B: 29.0 (#299)
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| LMArena Coding | 1523 | 1174 |
| FrontierCode | 50.9% | — |
| CursorBench | 51.8% | — |
| LMArena WebDev | 1753 | — |
| FrontierSWE | 56.3% | — |
| SciCode | 63.1% | — |
| WeirdML | 92.9% | — |
| BigCodeBench Instruct | — | 34.7% |
| LiveBench Coding | — | 22.5% |
| MirrorCode | 73.3% | — |
| BigCodeBench Complete | — | 40.6% |
| ALE-Bench | 2,143 | — |
Agentic & Tool Use Not comparable
Claude Fable 5.1: 50.8 (#5), Gemma 2 9B: —
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| 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 (#5), Gemma 2 9B: 15.3 (#306)
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| LMArena Hard Prompts | 1526 | 1172 |
| Epoch Capabilities Index | 165 | 119.78 |
| ARC-AGI-2 | 90% | — |
| NYT Connections (extended) | 90% | — |
| ARC-AGI-1 | 97.5% | — |
| CritPt | 31.1% | — |
| Chess Puzzles | 47% | — |
| EBR-Bench | 57.1% | — |
| LiveBench Reasoning | — | 15.2% |
| Mystery Game Puzzles | 58% | — |
| DTBench | 97.6% | — |
| LiveBench Data Analysis | — | 36.4% |
| LMCA | 65.5% | — |
| LiveBench | — | 28.7% |
| PIQA | — | 83.7% |
Math Claude Fable 5.1 leads
Claude Fable 5.1: 89.5 (#3), Gemma 2 9B: 9.3 (#312)
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 100% | 0.6% |
| LMArena Math | 1519 | 1183 |
| FrontierMath (Tiers 1-3) | 90.2% | — |
| FrontierMath Tier 4 | 87.8% | — |
| ProofBench | 100% | — |
| LiveBench Math | — | 19.8% |
| MATH Level 5 | — | 21% |
| FrontierMath Erdős | 0% | — |
| GSM8K | — | 84.9% |
Knowledge Claude Fable 5.1 leads
Claude Fable 5.1: 69.3 (#5), Gemma 2 9B: 9.7 (#300)
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| LMArena Expert | 1528 | 1147 |
| GPQA Diamond | — | 27.5% |
| Humanity's Last Exam | 46.5% | — |
| SimpleQA Verified | 70.8% | — |
| BoolQ | — | 85.7% |
| MMLU | — | 72.1% |
Multimodal Not comparable
Claude Fable 5.1: 54.1 (#4), Gemma 2 9B: —
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| LMArena Vision | 1319 | — |
| Blueprint-Bench 2 | 41.9% | — |
| Furniture Assembly | 70% | — |
| LMArena Document | 1513 | — |
Multilingual Claude Fable 5.1 leads
Claude Fable 5.1: 59.5 (#2), Gemma 2 9B: 36.8 (#233)
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| LMArena Non-English | 1509 | 1188 |
| LMArena Chinese | 1589 | 1185 |
| LMArena French | 1532 | 1189 |
| LMArena German | 1495 | 1186 |
| LMArena Japanese | 1565 | 1144 |
| LMArena Russian | 1525 | 1200 |
| LMArena Spanish | 1503 | 1200 |
| LMArena Korean | — | 1137 |
Instruction Following Claude Fable 5.1 leads
Claude Fable 5.1: 79.3 (#6), Gemma 2 9B: 57.8 (#264)
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| LMArena Instruction Following | 1515 | 1178 |
| LiveBench Instruction Following | — | 52.6% |
Long Context Claude Fable 5.1 leads
Claude Fable 5.1: 46.8 (#19), Gemma 2 9B: 36.3 (#228)
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| LMArena Longer Query | 1524 | 1197 |
Writing & Preference Claude Fable 5.1 leads
Claude Fable 5.1: 79.3 (#1), Gemma 2 9B: 32.3 (#276)
| Benchmark | Claude Fable 5.1 | Gemma 2 9B |
|---|---|---|
| LMArena Text | 1511 | 1207 |
| LMArena Creative Writing | 1507 | 1206 |
| EQ-Bench Creative Writing | 2162 | 841 |
| LMArena Multi-Turn | 1492 | 1193 |
| LiveBench Language | — | 25.5% |
Frequently asked questions
Is Claude Fable 5.1 better than Gemma 2 9B?
Claude Fable 5.1 is the stronger model overall, scoring 68.5 to 25.7 on the Noometry Index.
Is Claude Fable 5.1 or Gemma 2 9B better for coding?
Claude Fable 5.1 scores higher on coding benchmarks: 70.5 versus 29.0 in the Noometry coding category.
How many benchmarks do Claude Fable 5.1 and Gemma 2 9B share?
19 benchmarks have published results for both models. Claude Fable 5.1 has 50 scored results on Noometry and Gemma 2 9B has 35.