# Claude Haiku 4.5 vs LongCat-Flash-Lite-Sparse

> Side-by-side benchmark comparison for Claude Haiku 4.5 and LongCat-Flash-Lite-Sparse across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-haiku-4-5-vs-longcat-flash-lite-sparse
- Last updated: September 10, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Haiku 4.5 and LongCat-Flash-Lite-Sparse share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- LongCat-Flash-Lite-Sparse has the lower published output-token price.
- LongCat-Flash-Lite-Sparse has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Haiku 4.5 | LongCat-Flash-Lite-Sparse |
|----------|----------|----------|
| Creator | Anthropic | Meituan |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | 52.79 | null |
| Benchmarks Covered | 10 | 17 |
| Pricing (input/output) | $1.00 / $5.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: 27 (Supported · #142/152)
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | LongCat-Flash-Lite-Sparse | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 16.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 43.8% | Coming soon | Coming soon |
| 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
- Claude Haiku 4.5 public-lane score: 27.2 (Supported · #144/151)
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | LongCat-Flash-Lite-Sparse | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 73.3% | 68.2% | Claude Haiku 4.5 |
| VulcanBench v3 | 76.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 41.2% | Coming soon | Coming soon |
| SWE-bench (Vals) | 66.6% | Coming soon | 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
- Claude Haiku 4.5 public-lane score: 44.2 (Estimated · #115/183)
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | LongCat-Flash-Lite-Sparse | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 72.2% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 78.7% | Coming soon | Coming soon |
| 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
- Claude Haiku 4.5 public-lane score: 28.9 (Unranked · 2 rankable rows)
- LongCat-Flash-Lite-Sparse public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | LongCat-Flash-Lite-Sparse | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 5.903% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 2.083% | Coming soon | Coming soon |
| 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

### Is there enough evidence to pick between Claude Haiku 4.5 and LongCat-Flash-Lite-Sparse?

Not yet. The models share only 1 sourced benchmark row, 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

- [Claude Haiku 4.5 vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-vs-claude-haiku-4-5-thinking)
- [LongCat-Flash-Lite-Sparse vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-thinking-vs-longcat-flash-lite-sparse)
- [Claude Haiku 4.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-haiku-4-5)
- [LongCat-Flash-Lite-Sparse vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-longcat-flash-lite-sparse)

## Explore More

- [Claude Haiku 4.5 profile](/models/claude-haiku-4-5)
- [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)