# LongCat-Flash-Lite-Sparse vs Qwen3.5 397B

> Side-by-side benchmark comparison for LongCat-Flash-Lite-Sparse and Qwen3.5 397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/longcat-flash-lite-sparse-vs-qwen3-5-397b
- Last updated: September 10, 2026

- Shared sourced benchmarks: 10
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Qwen3.5 397B if you want the stronger benchmark profile. LongCat-Flash-Lite-Sparse only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Qwen3.5 397B leads overall 54.7 to 0.
- The biggest single benchmark swing is HMMT Feb 2026 in Mathematics, with scores of 40.5% and 87.9%.
- LongCat-Flash-Lite-Sparse is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- LongCat-Flash-Lite-Sparse also has the larger context window at 1M.

## Model Snapshot

| Property | LongCat-Flash-Lite-Sparse | Qwen3.5 397B |
|----------|----------|----------|
| Creator | Meituan | Alibaba |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 1M | 128K |
| Overall Score | null | 54.7 |
| Benchmarks Covered | 17 | 38 |
| Pricing (input/output) | $0.00 / $0.00 | $0.60 / $3.60 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 46.8 (Estimated · #71/152)

| Benchmark | LongCat-Flash-Lite-Sparse | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 33.7% | 52.5% | Qwen3.5 397B |
| VITA-Bench | 21.7% | 43.7% | Qwen3.5 397B |
| MCP Atlas | 45.6% | 46.1% | Qwen3.5 397B |
| BrowseComp | 48.6% | 62% | Qwen3.5 397B |
| Claw-Eval | Coming soon | 56.8% | Coming soon |
| QwenClawBench | Coming soon | 51.8% | Coming soon |
| τ³-bench results | Coming soon | 68.4% | Coming soon |
| DeepPlanning | Coming soon | 37.6% | Coming soon |
| Toolathlon | Coming soon | 36.3% | Coming soon |
| MCP-Tasks | Coming soon | 74.2% | Coming soon |
| WideResearch | Coming soon | 74.0% | Coming soon |
| Gert Labs | Coming soon | 46.76% | Coming soon |
| ResearchClawBench | Coming soon | 14.2% | Coming soon |

### Coding

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 50.2 (Estimated · #59/151)

| Benchmark | LongCat-Flash-Lite-Sparse | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 68.2% | 76.2% | Qwen3.5 397B |
| SWE-bench Pro | 40.6% | 50.9% | Qwen3.5 397B |
| SWE Multilingual | 59.3% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 33.7% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 83.6% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 63 (#27/48)

| Benchmark | LongCat-Flash-Lite-Sparse | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 79% | Coming soon |
| MathVision | Coming soon | 88.6% | Coming soon |
| CharXiv | Coming soon | 80.8% | Coming soon |
| VideoMMMU | Coming soon | 84.7% | Coming soon |
| ScreenSpot Pro | Coming soon | 65.6% | Coming soon |
| V* | Coming soon | 95.8% | Coming soon |

### Reasoning

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 59.8 (Unranked · 2 rankable rows)

| Benchmark | LongCat-Flash-Lite-Sparse | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 63.2% | Coming soon |
| AI-Needle | Coming soon | 68.7% | Coming soon |

### Knowledge

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 50.2 (Estimated · #77/183)

| Benchmark | LongCat-Flash-Lite-Sparse | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 85.3% | Coming soon | Coming soon |
| MMLU-Pro | 79.2% | 87.8% | Qwen3.5 397B |
| CMMLU | 84.3% | Coming soon | Coming soon |
| C-Eval | 85.8% | 93% | Qwen3.5 397B |
| GPQA-D | 69.5% | Coming soon | Coming soon |
| GPQA | Coming soon | 88.4% | Coming soon |
| SuperGPQA | Coming soon | 70.4% | Coming soon |
| MMLU-Redux | Coming soon | 94.9% | Coming soon |
| HLE | Coming soon | 28.7% | Coming soon |

### Instruction Following

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 0 (#123/123)

| Benchmark | LongCat-Flash-Lite-Sparse | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 92.6% | Coming soon |

### Multilingual

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 69.7 (#5/12)

| Benchmark | LongCat-Flash-Lite-Sparse | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 84.7% | Coming soon |
| NOVA-63 | Coming soon | 59.1% | Coming soon |

### Mathematics

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 74.2 (Unranked · 5 rankable rows)

| Benchmark | LongCat-Flash-Lite-Sparse | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MATH-500 | 95.8% | Coming soon | Coming soon |
| AIME26 | 65.7% | 93.3% | Qwen3.5 397B |
| HMMT Feb 2026 | 40.5% | 87.9% | Qwen3.5 397B |
| IMOAnswerBench | 49.4% | Coming soon | Coming soon |
| HMMT Feb 2025 | Coming soon | 94.8% | Coming soon |
| HMMT Nov 2025 | Coming soon | 92.7% | Coming soon |
| MMAnswerBench | Coming soon | 80.9% | Coming soon |

## FAQ

### Which is better overall, LongCat-Flash-Lite-Sparse or Qwen3.5 397B?

Qwen3.5 397B is ahead overall on BenchLM right now.

### How many benchmarks does LongCat-Flash-Lite-Sparse cover on BenchLM?

LongCat-Flash-Lite-Sparse currently has 17 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.5 397B cover on BenchLM?

Qwen3.5 397B currently has 38 sourced benchmark scores on BenchLM.

## Related Comparisons

- [LongCat-Flash-Lite-Sparse vs Qwen3.5 397B (Reasoning)](/compare/longcat-flash-lite-sparse-vs-qwen3-5-397b-reasoning)
- [Qwen3.5 397B vs Qwen3.5 397B (Reasoning)](/compare/qwen3-5-397b-vs-qwen3-5-397b-reasoning)
- [LongCat-Flash-Lite-Sparse vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-longcat-flash-lite-sparse)
- [Qwen3.5 397B vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-qwen3-5-397b)

## Explore More

- [LongCat-Flash-Lite-Sparse profile](/models/longcat-flash-lite-sparse)
- [Qwen3.5 397B profile](/models/qwen3-5-397b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)