# LongCat-Flash-Lite-Sparse vs Step 3.7 Flash

> Side-by-side benchmark comparison for LongCat-Flash-Lite-Sparse and Step 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/longcat-flash-lite-sparse-vs-step-3-7-flash
- Last updated: September 10, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Step 3.7 Flash 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

- Step 3.7 Flash leads overall 49.95 to 0.
- The biggest single benchmark swing is BrowseComp in Agentic, with scores of 48.6% and 75.8%.
- 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 | Step 3.7 Flash |
|----------|----------|----------|
| Creator | Meituan | StepFun |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Overall Score | null | 49.95 |
| Benchmarks Covered | 17 | 11 |
| Pricing (input/output) | $0.00 / $0.00 | $0.20 / $1.15 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 48.6 (Estimated · #64/152)

| Benchmark | LongCat-Flash-Lite-Sparse | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 33.7% | 59.5% | Step 3.7 Flash |
| VITA-Bench | 21.7% | Coming soon | Coming soon |
| MCP Atlas | 45.6% | Coming soon | Coming soon |
| BrowseComp | 48.6% | 75.8% | Step 3.7 Flash |
| DeepSearchQA | Coming soon | 92.8% | Coming soon |
| Toolathlon | Coming soon | 49.5% | Coming soon |
| Claw-Eval | Coming soon | 67.1% | Coming soon |
| HLE w/ tools | Coming soon | 47.2% | Coming soon |
| Gert Labs | Coming soon | 51.57% | Coming soon |

### Coding

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 47.1 (Estimated · #75/151)

| Benchmark | LongCat-Flash-Lite-Sparse | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 68.2% | Coming soon | Coming soon |
| SWE-bench Pro | 40.6% | 56.3% | Step 3.7 Flash |
| SWE Multilingual | 59.3% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 33.7% | 59.5% | Step 3.7 Flash |

### Multimodal & Grounded

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 70.9 (Unranked · 3 rankable rows)

| Benchmark | LongCat-Flash-Lite-Sparse | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SimpleVQA | Coming soon | 79.2% | Coming soon |
| V* | Coming soon | 95.3% | Coming soon |

### Reasoning

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 71.7 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 48.4 (Estimated · #92/183)

| Benchmark | LongCat-Flash-Lite-Sparse | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 85.3% | Coming soon | Coming soon |
| MMLU-Pro | 79.2% | Coming soon | Coming soon |
| CMMLU | 84.3% | Coming soon | Coming soon |
| C-Eval | 85.8% | Coming soon | Coming soon |
| GPQA-D | 69.5% | Coming soon | Coming soon |

### Instruction Following

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 82.1 (#52/123)

### Mathematics

- Winner: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon
- Step 3.7 Flash public-lane score: Coming soon

| Benchmark | LongCat-Flash-Lite-Sparse | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| MATH-500 | 95.8% | Coming soon | Coming soon |
| AIME26 | 65.7% | Coming soon | Coming soon |
| HMMT Feb 2026 | 40.5% | Coming soon | Coming soon |
| IMOAnswerBench | 49.4% | Coming soon | Coming soon |

## FAQ

### Which is better overall, LongCat-Flash-Lite-Sparse or Step 3.7 Flash?

Step 3.7 Flash 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 Step 3.7 Flash cover on BenchLM?

Step 3.7 Flash currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [LongCat-Flash-Lite-Sparse vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-longcat-flash-lite-sparse)
- [Step 3.7 Flash vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-step-3-7-flash)
- [LongCat-Flash-Lite-Sparse vs GPT-6 Astra](/compare/gpt-6-astra-vs-longcat-flash-lite-sparse)
- [Step 3.7 Flash vs GPT-6 Astra](/compare/gpt-6-astra-vs-step-3-7-flash)

## Explore More

- [LongCat-Flash-Lite-Sparse profile](/models/longcat-flash-lite-sparse)
- [Step 3.7 Flash profile](/models/step-3-7-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)