# LongCat-2.5 vs Qwen3.5-27B

> Side-by-side benchmark comparison for LongCat-2.5 and Qwen3.5-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/longcat-2-5-vs-qwen3-5-27b
- Last updated: November 9, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: LongCat-2.5 and Qwen3.5-27B share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Qwen3.5-27B has the lower published output-token price.
- LongCat-2.5 has the larger published context window at 1M.

## Model Snapshot

| Property | LongCat-2.5 | Qwen3.5-27B |
|----------|----------|----------|
| Creator | Meituan | Alibaba |
| Type | Open Weight | Open Weight |
| Reasoning | Hybrid | Reasoning |
| Context | 1M | 262K |
| Independent public score (not head-to-head) | null | 48.31 |
| Benchmarks Covered | 22 | 20 |
| Pricing (input/output) | $0.30 / $1.20 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 38.9 (Estimated · #76/132)

| Benchmark | LongCat-2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.4% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | 38.50% | Coming soon | Coming soon |
| BrowseComp | 91.9% | 61% | LongCat-2.5 |
| AutomationBench | 51.8% | Coming soon | Coming soon |
| HLE w/ tools | 63.1% | Coming soon | Coming soon |
| Agents' Last Exam | 38.5% | Coming soon | Coming soon |
| MCP Atlas | 83.1% | Coming soon | Coming soon |
| JobBench | 65.4% | Coming soon | Coming soon |
| skillsBench | 63.3% | Coming soon | Coming soon |
| SpreadsheetBench 2 | 34.9% | Coming soon | Coming soon |
| Claw-Eval | 78.3% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 41.6% | Coming soon |
| OSWorld-Verified | Coming soon | 56.2% | Coming soon |
| Gert Labs | Coming soon | 39.41% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 34.2 (Estimated · #92/158)

| Benchmark | LongCat-2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.4% | Coming soon | Coming soon |
| ProgramBench | 25.5% | Coming soon | Coming soon |
| DeepSWE | 64.6% | Coming soon | Coming soon |
| PaperBench | 82.1% | Coming soon | Coming soon |
| SWE-Atlas Codebase QnA | 58.3% | Coming soon | Coming soon |
| NL2Repo | 60.5% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 72.4% | Coming soon |
| LiveCodeBench v6 | Coming soon | 80.7% | Coming soon |
| SWE-Rebench | Coming soon | 58.9% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 41.6% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 39.4 (Supported · #81/157)

| Benchmark | LongCat-2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 60.6% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 50.4 (Estimated · #55/67)

| Benchmark | LongCat-2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| Vision2Web | 78.6% | Coming soon | Coming soon |
| CharXiv | 90.2% | 79.5% | LongCat-2.5 |
| MathVision w/ Python | 96.5% | Coming soon | Coming soon |
| Video-MME | 85.2% | Coming soon | Coming soon |
| MMMU | Coming soon | 82.3% | Coming soon |
| MMVU | Coming soon | 73.3% | Coming soon |
| MMMU-Pro | Coming soon | 75% | Coming soon |
| MathVision | Coming soon | 86.0% | Coming soon |
| V* | Coming soon | 93.7% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 44.7 (Supported · #99/179)

| Benchmark | LongCat-2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| FrontierScience | 77% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 86.1% | Coming soon |
| SuperGPQA | Coming soon | 65.6% | Coming soon |
| GPQA | Coming soon | 85.5% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 87.1 (#10/17)

| Benchmark | LongCat-2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 82.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.5-27B public-lane score: 92.9 (#15/157)

| Benchmark | LongCat-2.5 | Qwen3.5-27B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 95% | Coming soon |

## FAQ

### Is there enough evidence to pick between LongCat-2.5 and Qwen3.5-27B?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [LongCat-2.5 vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-longcat-2-5)
- [Qwen3.5-27B vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-qwen3-5-27b)
- [LongCat-2.5 vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-longcat-2-5)
- [Qwen3.5-27B vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-qwen3-5-27b)

## Explore More

- [LongCat-2.5 profile](/models/longcat-2-5)
- [Qwen3.5-27B profile](/models/qwen3-5-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)