# Leanstral 1.5 vs LongCat-Flash-Lite-Sparse

> Side-by-side benchmark comparison for Leanstral 1.5 and LongCat-Flash-Lite-Sparse across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/leanstral-1-5-vs-longcat-flash-lite-sparse
- Last updated: September 10, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Leanstral 1.5 and LongCat-Flash-Lite-Sparse.

## Summary

- Leanstral 1.5 and LongCat-Flash-Lite-Sparse do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Leanstral 1.5 | LongCat-Flash-Lite-Sparse |
|----------|----------|----------|
| Creator | Mistral | Meituan |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 1M |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 0 | 17 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Leanstral 1.5 public-lane score: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon

| Benchmark | Leanstral 1.5 | LongCat-Flash-Lite-Sparse | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 33.7% | Coming soon |
| VITA-Bench | Coming soon | 21.7% | Coming soon |
| MCP Atlas | Coming soon | 45.6% | Coming soon |
| BrowseComp | Coming soon | 48.6% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Leanstral 1.5 public-lane score: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon

| Benchmark | Leanstral 1.5 | LongCat-Flash-Lite-Sparse | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 68.2% | Coming soon |
| SWE-bench Pro | Coming soon | 40.6% | Coming soon |
| SWE Multilingual | Coming soon | 59.3% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 33.7% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Leanstral 1.5 public-lane score: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon

| Benchmark | Leanstral 1.5 | LongCat-Flash-Lite-Sparse | Winner |
|-----------|-----------|-----------|--------|
| MMLU | Coming soon | 85.3% | Coming soon |
| MMLU-Pro | Coming soon | 79.2% | Coming soon |
| CMMLU | Coming soon | 84.3% | Coming soon |
| C-Eval | Coming soon | 85.8% | Coming soon |
| GPQA-D | Coming soon | 69.5% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Leanstral 1.5 public-lane score: Coming soon
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon

| Benchmark | Leanstral 1.5 | LongCat-Flash-Lite-Sparse | Winner |
|-----------|-----------|-----------|--------|
| MATH-500 | Coming soon | 95.8% | Coming soon |
| AIME26 | Coming soon | 65.7% | Coming soon |
| HMMT Feb 2026 | Coming soon | 40.5% | Coming soon |
| IMOAnswerBench | Coming soon | 49.4% | Coming soon |

## FAQ

### Can I compare Leanstral 1.5 and LongCat-Flash-Lite-Sparse on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Leanstral 1.5 vs Leanstral](/compare/leanstral-vs-leanstral-1-5)
- [LongCat-Flash-Lite-Sparse vs Leanstral](/compare/leanstral-vs-longcat-flash-lite-sparse)
- [Leanstral 1.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-leanstral-1-5)
- [LongCat-Flash-Lite-Sparse vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-longcat-flash-lite-sparse)

## Explore More

- [Leanstral 1.5 profile](/models/leanstral-1-5)
- [LongCat-Flash-Lite-Sparse profile](/models/longcat-flash-lite-sparse)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)