# Claude Fable 5.1 vs Hy3

> Claude Fable 5.1 is the stronger model overall, scoring 68.5 to 43.6 on the Noometry Index. Hy3 costs 87× less per token, which makes it the better buy when Claude Fable 5.1's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/claude-fable-5-1-vs-hy3
- Last updated: 2026-10-10
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Claude Fable 5.1 scores higher in 8 categories and Hy3 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 37.4.
- The biggest single-benchmark swing is NYT Connections (extended): 90% for Claude Fable 5.1 and 41.2% for Hy3.
- Hy3 is cheaper at $0.13 / $0.53 per million input/output tokens, against $10 / $50 for Claude Fable 5.1.
- Claude Fable 5.1 accepts more context: 1M tokens versus 262K.
- Hy3 has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Fable 5.1 | Hy3 |
|---|---|---|
| Provider | Anthropic | Tencent |
| Noometry Index | 68.5 | 43.6 |
| Rank | 2 | 79 |
| Context | 1M | 262K |
| Input $/M | $10 | $0.13 |
| Output $/M | $50 | $0.53 |
| Weights | Proprietary | Open |

## Coding

- Claude Fable 5.1: 70.5 (#2)
- Hy3: 46.6 (#60)

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| LMArena WebDev | 1753 | 1509 |
| LMArena Coding | 1523 | 1465 |
| FrontierCode | 50.9% | — |
| CursorBench | 51.8% | — |
| FrontierSWE | 56.3% | — |
| SciCode | 63.1% | — |
| WeirdML | 92.9% | — |
| MirrorCode | 73.3% | — |
| ALE-Bench | 2,143 | — |

## Agentic & Tool Use

- Claude Fable 5.1: 50.8 (#5)
- Hy3: —

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| APEX-Agents | 68.6% | — |
| Remote Labor Index | 17.9% | — |
| GDP.pdf | 29.6% | — |
| Vending-Bench 2 | 5,422 | — |

## Reasoning

- Claude Fable 5.1: 76.7 (#5)
- Hy3: 25.0 (#134)

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| NYT Connections (extended) | 90% | 41.2% |
| LMArena Hard Prompts | 1526 | 1449 |
| ARC-AGI-2 | 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 | 165 | — |

## Math

- Claude Fable 5.1: 89.5 (#3)
- Hy3: 37.4 (#98)

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| LMArena Math | 1519 | 1475 |
| 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: 69.3 (#5)
- Hy3: 40.2 (#108)

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| LMArena Expert | 1528 | 1461 |
| Humanity's Last Exam | 46.5% | — |
| SimpleQA Verified | 70.8% | — |

## Multimodal

- Claude Fable 5.1: 54.1 (#4)
- Hy3: —

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| LMArena Vision | 1319 | — |
| Blueprint-Bench 2 | 41.9% | — |
| Furniture Assembly | 70% | — |
| LMArena Document | 1513 | — |

## Multilingual

- Claude Fable 5.1: 59.5 (#2)
- Hy3: 53.7 (#60)

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| LMArena Non-English | 1509 | 1427 |
| LMArena Chinese | 1589 | 1496 |
| LMArena French | 1532 | 1461 |
| LMArena Russian | 1525 | 1435 |
| LMArena Spanish | 1503 | 1448 |
| LMArena German | 1495 | — |
| LMArena Japanese | 1565 | — |
| LMArena Korean | — | 1390 |

## Instruction Following

- Claude Fable 5.1: 79.3 (#6)
- Hy3: 75.3 (#68)

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| LMArena Instruction Following | 1515 | 1425 |

## Long Context

- Claude Fable 5.1: 46.8 (#19)
- Hy3: 44.1 (#70)

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| LMArena Longer Query | 1524 | 1443 |

## Writing & Preference

- Claude Fable 5.1: 79.3 (#1)
- Hy3: 62.5 (#75)

| Benchmark | Claude Fable 5.1 | Hy3 |
|---|---|---|
| LMArena Text | 1511 | 1442 |
| LMArena Creative Writing | 1507 | 1399 |
| LMArena Multi-Turn | 1492 | 1436 |
| EQ-Bench Creative Writing | 2162 | — |

## FAQ

### Is Claude Fable 5.1 better than Hy3?

Claude Fable 5.1 is the stronger model overall, scoring 68.5 to 43.6 on the Noometry Index. Hy3 costs 87× less per token, which makes it the better buy when Claude Fable 5.1's lead doesn't matter for your workload.

### Which is cheaper, Claude Fable 5.1 or Hy3?

Hy3 is cheaper. It lists at $0.13 per million input tokens and $0.53 per million output tokens; Claude Fable 5.1 lists at $10 and $50.

### Is Claude Fable 5.1 or Hy3 better for coding?

Claude Fable 5.1 scores higher on coding benchmarks: 70.5 versus 46.6 in the Noometry coding category.

### Which has the bigger context window?

Claude Fable 5.1 does, with 1M tokens against 262K.

### How many benchmarks do Claude Fable 5.1 and Hy3 share?

16 benchmarks have published results for both models. Claude Fable 5.1 has 50 scored results on Noometry and Hy3 has 17.