# LongCat-2.5 vs Qwen3.8-27B

> Side-by-side benchmark comparison for LongCat-2.5 and Qwen3.8-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/longcat-2-5-vs-qwen3-8-27b
- Last updated: November 9, 2026

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

## Quick Verdict

Pick Qwen3.8-27B if you want the stronger benchmark profile. LongCat-2.5 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Qwen3.8-27B leads overall 54.38 to 0.
- The biggest single benchmark swing is JobBench in Agentic, with scores of 65.4% and 33.4%.
- Qwen3.8-27B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- LongCat-2.5 also has the larger context window at 1M.

## Model Snapshot

| Property | LongCat-2.5 | Qwen3.8-27B |
|----------|----------|----------|
| Creator | Meituan | Alibaba |
| Type | Open Weight | Open Weight |
| Reasoning | Hybrid | Reasoning |
| Context | 1M | 262K |
| Overall Score | null | 54.38 |
| Benchmarks Covered | 22 | 37 |
| Pricing (input/output) | $0.30 / $1.20 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 63 (Supported · #20/132)

| Benchmark | LongCat-2.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.4% | 73.0% | LongCat-2.5 |
| Terminal-Bench 4.0 | 38.50% | Coming soon | Coming soon |
| BrowseComp | 91.9% | Coming soon | Coming soon |
| AutomationBench | 51.8% | Coming soon | Coming soon |
| HLE w/ tools | 63.1% | Coming soon | Coming soon |
| Agents' Last Exam | 38.5% | 42.9% | Qwen3.8-27B |
| MCP Atlas | 83.1% | Coming soon | Coming soon |
| JobBench | 65.4% | 33.4% | LongCat-2.5 |
| skillsBench | 63.3% | Coming soon | Coming soon |
| SpreadsheetBench 2 | 34.9% | Coming soon | Coming soon |
| Claw-Eval | 78.3% | Coming soon | Coming soon |
| CoWorkBench | Coming soon | 70.7% | Coming soon |
| OSWorld-Verified | Coming soon | 84.3% | Coming soon |
| WebArena-Verified | Coming soon | 64.8% | Coming soon |
| AndroidWorld | Coming soon | 81.9% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 58.4% | Coming soon |
| MazeBench | Coming soon | 0% | Coming soon |

### Coding

- Winner: Not comparable
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 46.9 (Supported · #57/158)

| Benchmark | LongCat-2.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.4% | 73.0% | LongCat-2.5 |
| ProgramBench | 25.5% | Coming soon | Coming soon |
| DeepSWE | 64.6% | 42.2% | LongCat-2.5 |
| PaperBench | 82.1% | Coming soon | Coming soon |
| SWE-Atlas Codebase QnA | 58.3% | Coming soon | Coming soon |
| NL2Repo | 60.5% | 42.3% | LongCat-2.5 |
| SWE-bench Pro | Coming soon | 61.7% | Coming soon |
| LiveCodeBench v6 | Coming soon | 90.3% | Coming soon |
| VulcanBench v3 | Coming soon | 82.6% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 84.0% | Coming soon |
| SWE-bench (Vals) | Coming soon | 86.0% | Coming soon |
| Bug Hunt Bench | Coming soon | 15.0 fixes | Coming soon |

### Reasoning

- Winner: Not comparable
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 42.9 (Supported · #73/157)

### Multimodal & Grounded

- Winner: Not comparable
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 60.1 (Supported · #37/67)

| Benchmark | LongCat-2.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Vision2Web | 78.6% | 62.9% | LongCat-2.5 |
| CharXiv | 90.2% | 90.2% | Tie |
| MathVision w/ Python | 96.5% | 94.6% | LongCat-2.5 |
| Video-MME | 85.2% | Coming soon | Coming soon |
| ExtractBench (LlamaIndex) | Coming soon | 89.75% | Coming soon |
| ParseBench | Coming soon | 69.03% | Coming soon |
| MathVision | Coming soon | 90.0% | Coming soon |
| BabyVision | Coming soon | 65.7% | Coming soon |
| BabyVision w/ Python | Coming soon | 85.6% | Coming soon |
| CharXiv w/o tools | Coming soon | 83.7% | Coming soon |
| OmniDocBench 1.5 | Coming soon | 91.1% | Coming soon |
| RealWorldQA | Coming soon | 85.9% | Coming soon |
| ERQA | Coming soon | 65.5% | Coming soon |

### Knowledge

- Winner: Not comparable
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 49 (Supported · #84/179)

| Benchmark | LongCat-2.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| FrontierScience | 77% | Coming soon | Coming soon |
| GPQA | Coming soon | 89.2% | Coming soon |
| GPQA-D | Coming soon | 89.2% | Coming soon |
| HLE | Coming soon | 30.8% | Coming soon |
| HLE w/o tools | Coming soon | 30.8% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 88.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 84.3% | Coming soon |

### Instruction Following

- Winner: Not comparable
- LongCat-2.5 public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 86.9 (#44/157)

| Benchmark | LongCat-2.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.5% | Coming soon |

## FAQ

### Which is better overall, LongCat-2.5 or Qwen3.8-27B?

Qwen3.8-27B is ahead overall on BenchLM right now.

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

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

### How many benchmarks does Qwen3.8-27B cover on BenchLM?

Qwen3.8-27B currently has 37 sourced benchmark scores on BenchLM.

## Related Comparisons

- [LongCat-2.5 vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-longcat-2-5)
- [Qwen3.8-27B vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-qwen3-8-27b)
- [LongCat-2.5 vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-longcat-2-5)
- [Qwen3.8-27B vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-qwen3-8-27b)

## Explore More

- [LongCat-2.5 profile](/models/longcat-2-5)
- [Qwen3.8-27B profile](/models/qwen3-8-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)