Model comparison
Claude Fable 5.1 vs Gemini 1.5 Flash (May 2024)
Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 33.2 on the Noometry Index.
Last verified . 22 shared benchmarks.
GoogleSummary
- They share 22 benchmarks with published results for both. Claude Fable 5.1 scores higher in 10 categories and Gemini 1.5 Flash (May 2024) in 0 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Fable 5.1 leads 89.6 to 22.1.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Fable 5.1 and 16.3% for Gemini 1.5 Flash (May 2024).
Side by side
| Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 69.0 | 33.2 |
| Released | 2026-09-01 | 2024-05-14 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $10 | — |
| Output $ / M tokens | $50 | — |
| Results tracked | 52 | 42 |
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Category by category
Coding Claude Fable 5.1 leads
Claude Fable 5.1: 74.7 (#1), Gemini 1.5 Flash (May 2024): 34.4 (#236)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| WeirdML | 92.9% | 24.9% |
| LMArena Coding | 1528 | 1261 |
| FrontierCode | 50.9% | — |
| CursorBench | 51.8% | — |
| LMArena WebDev | 1744 | — |
| FrontierSWE | 56.3% | — |
| SciCode | 63.1% | — |
| GSO | 88.2% | — |
| BigCodeBench Instruct | — | 43.5% |
| MirrorCode | 73.3% | — |
| BigCodeBench Complete | — | 55.1% |
| ALE-Bench | 2,143 | — |
| HumanEval+ | — | 75.6% |
| MBPP+ | — | 67.5% |
Agentic & Tool Use Claude Fable 5.1 leads
Claude Fable 5.1: 50.7 (#5), Gemini 1.5 Flash (May 2024): 26.6 (#102)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| APEX-Agents | 68.6% | — |
| Remote Labor Index | 17.9% | — |
| BALROG | — | 14.6% |
| GDP.pdf | 29.6% | — |
| Vending-Bench 2 | 5,422 | — |
Reasoning Claude Fable 5.1 leads
Claude Fable 5.1: 76.7 (#7), Gemini 1.5 Flash (May 2024): 21.7 (#215)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| LMArena Hard Prompts | 1526 | 1257 |
| DTBench | 97.6% | 53.8% |
| Epoch Capabilities Index | 164.7 | 129.36 |
| 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% | — |
| LMCA | 65.5% | — |
| ForecastBench | — | 53.9 |
| PIQA | — | 87.5% |
Math Claude Fable 5.1 leads
Claude Fable 5.1: 89.6 (#4), Gemini 1.5 Flash (May 2024): 22.1 (#281)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 100% | 16.3% |
| LMArena Math | 1525 | 1269 |
| FrontierMath (Tiers 1-3) | 90.2% | — |
| FrontierMath Tier 4 | 87.8% | — |
| ProofBench | 100% | — |
| Omni-MATH | — | 30.4% |
| MATH Level 5 | — | 61.9% |
| FrontierMath (Feb 2025 set) | — | 0% |
| FrontierMath Erdős | 0% | — |
| GSM8K | — | 82.4% |
Knowledge Claude Fable 5.1 leads
Claude Fable 5.1: 69.6 (#6), Gemini 1.5 Flash (May 2024): 26.2 (#260)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| LMArena Expert | 1535 | 1233 |
| GPQA Diamond | — | 47.3% |
| Humanity's Last Exam | 46.5% | — |
| SimpleQA Verified | 70.8% | — |
| MMLU-Pro | — | 67.8% |
| GPQA (HELM) | — | 43.7% |
| BoolQ | — | 85.8% |
| MMLU | — | 77.9% |
Multimodal Claude Fable 5.1 leads
Claude Fable 5.1: 53.9 (#4), Gemini 1.5 Flash (May 2024): 36.0 (#81)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| LMArena Vision | 1318 | 1141 |
| Video-MME | — | 70.3% |
| GeoBench | — | 76% |
| Blueprint-Bench 2 | 41.9% | — |
| Furniture Assembly | 70% | — |
| LMArena Document | 1513 | — |
Multilingual Claude Fable 5.1 leads
Claude Fable 5.1: 59.1 (#3), Gemini 1.5 Flash (May 2024): 42.9 (#189)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| LMArena Non-English | 1507 | 1278 |
| LMArena Chinese | 1586 | 1295 |
| LMArena French | 1525 | 1258 |
| LMArena German | 1500 | 1262 |
| LMArena Japanese | 1543 | 1252 |
| LMArena Korean | 1534 | 1221 |
| LMArena Russian | 1521 | 1288 |
| LMArena Spanish | 1516 | 1243 |
Instruction Following Claude Fable 5.1 leads
Claude Fable 5.1: 79.2 (#6), Gemini 1.5 Flash (May 2024): 66.8 (#205)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| LMArena Instruction Following | 1517 | 1258 |
| IFEval | — | 83.1% |
Long Context Claude Fable 5.1 leads
Claude Fable 5.1: 46.7 (#20), Gemini 1.5 Flash (May 2024): 39.0 (#187)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| LMArena Longer Query | 1522 | 1284 |
Writing & Preference Claude Fable 5.1 leads
Claude Fable 5.1: 79.2 (#2), Gemini 1.5 Flash (May 2024): 48.7 (#196)
| Benchmark | Claude Fable 5.1 | Gemini 1.5 Flash (May 2024) |
|---|---|---|
| LMArena Text | 1510 | 1287 |
| LMArena Creative Writing | 1507 | 1285 |
| LMArena Multi-Turn | 1492 | 1253 |
| EQ-Bench Creative Writing | 2162 | — |
| WildBench | — | 79.2% |
Frequently asked questions
Is Claude Fable 5.1 better than Gemini 1.5 Flash (May 2024)?
Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 33.2 on the Noometry Index.
Is Claude Fable 5.1 or Gemini 1.5 Flash (May 2024) better for coding?
Claude Fable 5.1 scores higher on coding benchmarks: 74.7 versus 34.4 in the Noometry coding category.
How many benchmarks do Claude Fable 5.1 and Gemini 1.5 Flash (May 2024) share?
22 benchmarks have published results for both models. Claude Fable 5.1 has 52 scored results on Noometry and Gemini 1.5 Flash (May 2024) has 42.