Model comparison
Claude 3.7 Sonnet vs Claude Fable 5
Claude Fable 5 is the stronger model overall, scoring 66.3 to 39.4 on the Noometry Index.
Last verified . 26 shared benchmarks.
Summary
- They share 26 benchmarks with published results for both. Claude 3.7 Sonnet scores higher in 1 category and Claude Fable 5 in 9 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Fable 5 leads 76.8 to 18.7.
- The biggest single-benchmark swing is ARC-AGI-2: 0.9% for Claude 3.7 Sonnet and 89.2% for Claude Fable 5.
Side by side
| Claude 3.7 Sonnet | Claude Fable 5 | |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | 39.4 | 66.3 |
| Released | 2025-02-24 | 2026-06-07 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 128K |
| Input $ / M tokens | — | $10 |
| Output $ / M tokens | — | $50 |
| Results tracked | 58 | 61 |
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Category by category
Coding Claude Fable 5 leads
Claude 3.7 Sonnet: 41.1 (#120), Claude Fable 5: 67.0 (#4)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| LMArena Coding | 1361 | 1519 |
| SWE-bench Verified | 61% | — |
| DeepSWE | — | 69.9% |
| FrontierCode | — | 53.5% |
| SWE-bench Verified (bash only) | 52.8% | — |
| Aider Polyglot | 64.9% | — |
| LMArena WebDev | — | 1626 |
| FrontierSWE | — | 47% |
| SciCode | — | 61% |
| GSO | 3.8% | — |
| WeirdML | — | 91.9% |
| LiveBench Coding | 74.5% | — |
| MirrorCode | — | 63.9% |
| CadEval | 54% | — |
| ALE-Bench | — | 2,041 |
Agentic & Tool Use Claude Fable 5 leads
Claude 3.7 Sonnet: 33.9 (#46), Claude Fable 5: 54.1 (#2)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| APEX-Agents | — | 63.6% |
| Remote Labor Index | — | 16.1% |
| TheAgentCompany | 30.9% | — |
| τ²-bench Banking | — | 39.7% |
| Cybench | 20% | — |
| DeepResearch Bench | 43.6% | — |
| OSWorld | 35.8% | — |
| PostTrainBench | — | 41.8% |
| GBAEval | — | 74.5% |
| GDP.pdf | — | 30% |
| LMArena Search | — | 1230 |
| METR Time Horizons | 60% | — |
| Vending-Bench 2 | — | 5,680 |
Reasoning Claude Fable 5 leads
Claude 3.7 Sonnet: 18.7 (#252), Claude Fable 5: 76.8 (#4)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| ARC-AGI-2 | 0.9% | 89.2% |
| SimpleBench | 46.4% | 81.9% |
| ARC-AGI-1 | 28.6% | 98.5% |
| EnigmaEval | 4.2% | 39.3% |
| LMArena Hard Prompts | 1333 | 1508 |
| Epoch Capabilities Index | 141.16 | 163.6 |
| Kagi LLM Benchmark | — | 91.4% |
| NYT Connections (extended) | — | 92.7% |
| CritPt | — | 28.6% |
| Chess Puzzles | — | 41% |
| EBR-Bench | — | 39.5% |
| LiveBench Reasoning | 87.8% | — |
| Mystery Game Puzzles | — | 52% |
| DTBench | — | 98.4% |
| LiveBench Data Analysis | 74% | — |
| LMCA | — | 61.1% |
| Surface Evolver Bench | — | 95% |
| Bench to the Future 3 | — | 0.13 |
| ForecastBench | 61.8 | — |
| LiveBench | 76.1% | — |
Math Claude Fable 5 leads
Claude 3.7 Sonnet: 35.7 (#137), Claude Fable 5: 88.4 (#5)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 57.8% | 100% |
| LMArena Math | 1336 | 1519 |
| FrontierMath (Tiers 1-3) | — | 87% |
| FrontierMath Tier 4 | — | 90.2% |
| ProofBench | — | 95% |
| Omni-MATH | 33% | — |
| LiveBench Math | 79% | — |
| MATH Level 5 | 91.2% | — |
| FrontierMath (Feb 2025 set) | 4.1% | — |
| FrontierMath Erdős | — | 0% |
Knowledge Claude Fable 5 leads
Claude 3.7 Sonnet: 39.7 (#117), Claude Fable 5: 62.3 (#22)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| GPQA Diamond | 79.7% | 85.9% |
| LMArena Expert | 1321 | 1534 |
| Humanity's Last Exam | 8% | — |
| SimpleQA Verified | — | 70.7% |
| MMLU-Pro | 78.4% | — |
| Confabulations | 14.7% | — |
| GPQA (HELM) | 60.8% | — |
Multimodal Claude Fable 5 leads
Claude 3.7 Sonnet: 33.1 (#90), Claude Fable 5: 45.6 (#14)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| LMArena Vision | 1169 | 1326 |
| GeoBench | 68% | — |
| VPCT | 39% | — |
| Blueprint-Bench 2 | — | 38.6% |
| Furniture Assembly | — | 35.8% |
| LMArena Document | — | 1496 |
| SpatialViz-Bench | 33.9% | — |
Multilingual Claude Fable 5 leads
Claude 3.7 Sonnet: 44.3 (#174), Claude Fable 5: 57.6 (#8)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| LMArena Non-English | 1296 | 1483 |
| LMArena Chinese | 1299 | 1546 |
| LMArena French | 1302 | 1509 |
| LMArena German | 1301 | 1486 |
| LMArena Japanese | 1268 | 1507 |
| LMArena Korean | 1249 | 1493 |
| LMArena Russian | 1311 | 1507 |
| LMArena Spanish | 1299 | 1503 |
Instruction Following Claude Fable 5 leads
Claude 3.7 Sonnet: 73.1 (#120), Claude Fable 5: 78.8 (#7)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| LMArena Instruction Following | 1352 | 1503 |
| LiveBench Instruction Following | 81.3% | — |
| IFEval | 83.4% | — |
Long Context Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 50.2 (#10), Claude Fable 5: 46.3 (#22)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| LMArena Longer Query | 1373 | 1510 |
| Fiction.LiveBench | 83.3% | — |
Writing & Preference Claude Fable 5 leads
Claude 3.7 Sonnet: 54.6 (#145), Claude Fable 5: 76.1 (#5)
| Benchmark | Claude 3.7 Sonnet | Claude Fable 5 |
|---|---|---|
| LMArena Text | 1314 | 1491 |
| LMArena Creative Writing | 1332 | 1494 |
| EQ-Bench Creative Writing | 1412 | 1943 |
| LMArena Multi-Turn | 1339 | 1505 |
| Short-Story Creative Writing | 81.1% | — |
| WildBench | 81.4% | — |
| EQ-Bench 4 | — | 1340 |
| LiveBench Language | 59.9% | — |
Frequently asked questions
Is Claude 3.7 Sonnet better than Claude Fable 5?
Claude Fable 5 is the stronger model overall, scoring 66.3 to 39.4 on the Noometry Index.
Is Claude 3.7 Sonnet or Claude Fable 5 better for coding?
Claude Fable 5 scores higher on coding benchmarks: 67.0 versus 41.1 in the Noometry coding category.
How many benchmarks do Claude 3.7 Sonnet and Claude Fable 5 share?
26 benchmarks have published results for both models. Claude 3.7 Sonnet has 58 scored results on Noometry and Claude Fable 5 has 61.