# Hy4 vs LongCat-2.5

> Side-by-side benchmark comparison for Hy4 and LongCat-2.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Treat this as a split decision: use the category and benchmark breakdown to decide which profile better matches your workload.

## Summary

- Hy4 and LongCat-2.5 are tied on overall score, so the decision depends on category fit rather than the headline number.
- The biggest single benchmark swing is DeepSWE in Coding, with scores of 74.9% and 64.6%.
- LongCat-2.5 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Hy4 | LongCat-2.5 |
|----------|----------|----------|
| Creator | Tencent | Meituan |
| Type | Pending | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 1M | 1M |
| Overall Score | null | null |
| Benchmarks Covered | 15 | 22 |
| Pricing (input/output) | $0.834 / $2.501 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Hy4 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 44.40% | 38.50% | Hy4 |
| Terminal-Bench-Science 0.1 | 19.8% | Coming soon | Coming soon |
| HLE w/ tools | 59.1% | 63.1% | LongCat-2.5 |
| Agents' Last Exam | 41.0% | 38.5% | Hy4 |
| APEX-Agents | 75.2% | Coming soon | Coming soon |
| AutomationBench | 56.2% | 51.8% | Hy4 |
| OSWorld 2.1 | 78.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 88.4% | Coming soon |
| BrowseComp | Coming soon | 91.9% | Coming soon |
| MCP Atlas | Coming soon | 83.1% | Coming soon |
| JobBench | Coming soon | 65.4% | Coming soon |
| skillsBench | Coming soon | 63.3% | Coming soon |
| SpreadsheetBench 2 | Coming soon | 34.9% | Coming soon |
| Claw-Eval | Coming soon | 78.3% | Coming soon |

### Coding

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Hy4 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 74.9% | 64.6% | Hy4 |
| sweMarathon | 43.8% | Coming soon | Coming soon |
| ProgramBench | 30.0% | 25.5% | Hy4 |
| FrontierCode 2.0 | 31.0% | Coming soon | Coming soon |
| PostTrainBench v1.2 | 35.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 88.4% | Coming soon |
| PaperBench | Coming soon | 82.1% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 58.3% | Coming soon |
| NL2Repo | Coming soon | 60.5% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Hy4 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 78.6% | Coming soon | Coming soon |
| ZeroBench w/ Python | 55.4% | Coming soon | Coming soon |
| Vision2Web | Coming soon | 78.6% | Coming soon |
| CharXiv | Coming soon | 90.2% | Coming soon |
| MathVision w/ Python | Coming soon | 96.5% | Coming soon |
| Video-MME | Coming soon | 85.2% | Coming soon |

### Knowledge

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- LongCat-2.5 public-lane score: Coming soon

| Benchmark | Hy4 | LongCat-2.5 | Winner |
|-----------|-----------|-----------|--------|
| HLE | 59.1% | Coming soon | Coming soon |
| FrontierScience | Coming soon | 77% | Coming soon |

## FAQ

### Which is better overall, Hy4 or LongCat-2.5?

Hy4 and LongCat-2.5 are tied on overall score in the current BenchLM data.

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

Hy4 currently has 15 sourced benchmark scores on BenchLM.

### How many benchmarks does LongCat-2.5 cover on BenchLM?

LongCat-2.5 currently has 22 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Hy4 vs Hy4 preview](/compare/hy4-vs-hy4-preview)
- [LongCat-2.5 vs Hy4 preview](/compare/hy4-preview-vs-longcat-2-5)
- [Hy4 vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-hy4)
- [LongCat-2.5 vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-longcat-2-5)

## Explore More

- [Hy4 profile](/models/hy4)
- [LongCat-2.5 profile](/models/longcat-2-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)