Model comparison
Claude Fable 5.1 vs Gemma 3n E4b IT
Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 37.3 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Claude Fable 5.1 scores higher in 8 categories and Gemma 3n E4b IT in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Fable 5.1 leads 76.7 to 19.9.
- Gemma 3n E4b IT has downloadable open weights; the other is API-only.
Side by side
| Claude Fable 5.1 | Gemma 3n E4b IT | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 69.0 | 37.3 |
| Released | 2026-09-01 | — |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $10 | — |
| Output $ / M tokens | $50 | — |
| Results tracked | 52 | 18 |
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Category by category
Coding Claude Fable 5.1 leads
Claude Fable 5.1: 74.7 (#1), Gemma 3n E4b IT: 37.0 (#198)
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| LMArena Coding | 1528 | 1268 |
| 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), Gemma 3n E4b IT: —
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| 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), Gemma 3n E4b IT: 19.9 (#247)
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| LMArena Hard Prompts | 1526 | 1284 |
| ARC-AGI-2 | 90% | — |
| Kagi LLM Benchmark | — | 31.5% |
| 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), Gemma 3n E4b IT: 35.1 (#188)
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| LMArena Math | 1525 | 1251 |
| FrontierMath (Tiers 1-3) | 90.2% | — |
| FrontierMath Tier 4 | 87.8% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| FrontierMath Erdős | 0% | — |
Knowledge Claude Fable 5.1 leads
Claude Fable 5.1: 69.6 (#6), Gemma 3n E4b IT: 34.2 (#198)
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| LMArena Expert | 1535 | 1246 |
| Humanity's Last Exam | 46.5% | — |
| SimpleQA Verified | 70.8% | — |
Multimodal Not comparable
Claude Fable 5.1: 53.9 (#4), Gemma 3n E4b IT: —
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| 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), Gemma 3n E4b IT: 43.4 (#183)
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| LMArena Non-English | 1507 | 1285 |
| LMArena Chinese | 1586 | 1309 |
| LMArena French | 1525 | 1330 |
| LMArena German | 1500 | 1311 |
| LMArena Japanese | 1543 | 1272 |
| LMArena Korean | 1534 | 1259 |
| LMArena Russian | 1521 | 1288 |
| LMArena Spanish | 1516 | 1305 |
Instruction Following Claude Fable 5.1 leads
Claude Fable 5.1: 79.2 (#6), Gemma 3n E4b IT: 66.1 (#210)
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| LMArena Instruction Following | 1517 | 1255 |
Long Context Claude Fable 5.1 leads
Claude Fable 5.1: 46.7 (#20), Gemma 3n E4b IT: 38.7 (#191)
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| LMArena Longer Query | 1522 | 1276 |
Writing & Preference Claude Fable 5.1 leads
Claude Fable 5.1: 79.2 (#2), Gemma 3n E4b IT: 50.1 (#186)
| Benchmark | Claude Fable 5.1 | Gemma 3n E4b IT |
|---|---|---|
| LMArena Text | 1510 | 1306 |
| LMArena Creative Writing | 1507 | 1287 |
| LMArena Multi-Turn | 1492 | 1276 |
| EQ-Bench Creative Writing | 2162 | — |
Frequently asked questions
Is Claude Fable 5.1 better than Gemma 3n E4b IT?
Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 37.3 on the Noometry Index.
Is Claude Fable 5.1 or Gemma 3n E4b IT better for coding?
Claude Fable 5.1 scores higher on coding benchmarks: 74.7 versus 37.0 in the Noometry coding category.
How many benchmarks do Claude Fable 5.1 and Gemma 3n E4b IT share?
17 benchmarks have published results for both models. Claude Fable 5.1 has 52 scored results on Noometry and Gemma 3n E4b IT has 18.