# Claude Fable 5.2 vs Hy4 preview

> Side-by-side benchmark comparison for Claude Fable 5.2 and Hy4 preview across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-fable-5-2-vs-hy4-preview
- Last updated: November 9, 2026

- Shared sourced benchmarks: 9
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Claude Fable 5.2 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Claude Fable 5.2 has the higher overall point estimate 91.19 to 61.09. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 97.6 for Claude Fable 5.2 and 63.7 for Hy4 preview.
- The biggest single benchmark swing is ProgramBench in Coding, with scores of 85.6% and 17.5%.
- Hy4 preview is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Fable 5.2 | Hy4 preview |
|----------|----------|----------|
| Creator | Anthropic | Tencent |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 91.19 | 61.09 |
| Benchmarks Covered | 30 | 34 |
| Pricing (input/output) | $8.00 / $40.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 90.7 (Estimated · #1/132)
- Hy4 preview public-lane score: 56.9 (Estimated · #38/132)

| Benchmark | Claude Fable 5.2 | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 67.60% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 74.6% | Coming soon | Coming soon |
| AutomationBench | 51.4% | 32.1% | Claude Fable 5.2 |
| OSWorld 2.1 Offline | 89.3% | Coming soon | Coming soon |
| WANDR | 82.1% | Coming soon | Coming soon |
| Remote Labor Index | 41.3% | Coming soon | Coming soon |
| RoboDojo Sim | 64.9% | Coming soon | Coming soon |
| DRACO | 87.7% | 77.2% | Claude Fable 5.2 |
| Terminal-Bench 2.1 | Coming soon | 85.4% | Coming soon |
| CyberGym | Coming soon | 78.4% | Coming soon |
| WideResearch | Coming soon | 83.9% | Coming soon |
| MCP Atlas | Coming soon | 83.7% | Coming soon |
| Toolathlon-Verified | Coming soon | 74.1% | Coming soon |
| APEX-Agents | Coming soon | 37.1% | Coming soon |
| skillsBench | Coming soon | 62.9% | Coming soon |
| JobBench | Coming soon | 61.7% | Coming soon |
| Agents' Last Exam | Coming soon | 22.8% | Coming soon |
| BankerToolBench | Coming soon | 78.6% | Coming soon |
| HLE w/ tools | Coming soon | 55.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 55.1% | Coming soon |
| CWE-bench v1 | Coming soon | 53.0% | Coming soon |
| Hermes Index | Coming soon | 26.1% | Coming soon |
| Hermes Bench | Coming soon | 58.6% | Coming soon |
| CWE-bench | Coming soon | 47.3% | Coming soon |

### Coding

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 86.9 (Estimated · #1/158)
- Hy4 preview public-lane score: 56.7 (Supported · #28/158)

| Benchmark | Claude Fable 5.2 | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 93% | 65.7% | Claude Fable 5.2 |
| SWE Multilingual | 96.6% | 82.9% | Claude Fable 5.2 |
| SWE Multimodal | 74.1% | Coming soon | Coming soon |
| DeepSWE | 74.3% | 64.3% | Claude Fable 5.2 |
| FrontierSWE v2 | 69.9% | Coming soon | Coming soon |
| ProgramBench | 85.6% | 17.5% | Claude Fable 5.2 |
| FrontierCode 2.0 | 49.1% | Coming soon | Coming soon |
| CursorBench 4.0 | 60.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.4% | Coming soon |
| NL2Repo | Coming soon | 58.9% | Coming soon |
| PostTrain Bench | Coming soon | 35.6% | Coming soon |
| sweMarathon | Coming soon | 31.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: 90.7 (Supported · #1/157)
- Hy4 preview public-lane score: Coming soon

| Benchmark | Claude Fable 5.2 | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-3 | 65.7% | Coming soon | Coming soon |
| ARC-AGI-3 Provider Adapter | 94.90% | Coming soon | Coming soon |
| STEM Professor Bench | 61.8% | Coming soon | Coming soon |
| STEMBench | Coming soon | 2.59 | Coming soon |
| CritPt | Coming soon | 16.9% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: 89.8 (Estimated · #1/67)
- Hy4 preview public-lane score: Coming soon

| Benchmark | Claude Fable 5.2 | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 73.4% | Coming soon | Coming soon |
| Chartography (tools) | 91.6% | Coming soon | Coming soon |
| OfficeQA | 83.4% | Coming soon | Coming soon |
| OfficeQA Pro | 72.9% | 66.2% | Claude Fable 5.2 |
| BenchCAD 2.1 | 75.4% | Coming soon | Coming soon |
| BenchCAD 2.1 (tools) | 83.5% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Fable 5.2 public-lane score: 97.6 (Supported · #1/179)
- Hy4 preview public-lane score: 63.7 (Estimated · #35/179)

| Benchmark | Claude Fable 5.2 | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| HLE | 74.2% | 55.4% | Claude Fable 5.2 |
| HLE w/o tools | 73.2% | 43.4% | Claude Fable 5.2 |
| PhysicianBench | 64.4% | Coming soon | Coming soon |
| GPQA | Coming soon | 92.3% | Coming soon |
| GPQA-D | Coming soon | 92.3% | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: Coming soon
- Hy4 preview public-lane score: Coming soon

| Benchmark | Claude Fable 5.2 | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| GMMLU | 96.0% | Coming soon | Coming soon |
| MILU | 94.1% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Fable 5.2 public-lane score: Coming soon
- Hy4 preview public-lane score: Coming soon

| Benchmark | Claude Fable 5.2 | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| Apex | Coming soon | 74.2% | Coming soon |

## FAQ

### Which is better overall, Claude Fable 5.2 or Hy4 preview?

Claude Fable 5.2 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Fable 5.2 and Hy4 preview?

The widest category gap is in knowledge, where the averages are 97.6 for Claude Fable 5.2 and 63.7 for Hy4 preview.

### How many benchmarks does Claude Fable 5.2 cover on BenchLM?

Claude Fable 5.2 currently has 30 sourced benchmark scores on BenchLM.

### How many benchmarks does Hy4 preview cover on BenchLM?

Hy4 preview currently has 34 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Fable 5.2 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-fable-5-2)
- [Hy4 preview vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-hy4-preview)
- [Claude Fable 5.2 vs Claude Fable 5](/compare/claude-fable-vs-claude-fable-5-2)
- [Hy4 preview vs Claude Fable 5](/compare/claude-fable-vs-hy4-preview)

## Explore More

- [Claude Fable 5.2 profile](/models/claude-fable-5-2)
- [Hy4 preview profile](/models/hy4-preview)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)