# Claude 3.5 Haiku vs Longcat Flash Chat

> Longcat Flash Chat is the stronger model overall, scoring 41.5 to 28.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-5-haiku-vs-longcat-flash-chat
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Claude 3.5 Haiku scores higher in 0 categories and Longcat Flash Chat in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Longcat Flash Chat leads 36.6 to 13.7.
- Longcat Flash Chat has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| Provider | Anthropic | Meituan |
| Noometry Index | 28.9 | 41.5 |
| Rank | 309 | 121 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Claude 3.5 Haiku: 32.6 (#258)
- Longcat Flash Chat: 42.9 (#85)

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Coding | 1287 | 1471 |
| Aider Polyglot | 28% | — |
| SciCode | 27.4% | — |
| WeirdML | 30.7% | — |
| BigCodeBench Instruct | 46.1% | — |
| LiveBench Coding | 51.4% | — |
| BigCodeBench Complete | 59% | — |
| CadEval | 32% | — |

## Agentic & Tool Use

- Claude 3.5 Haiku: 27.7 (#90)
- Longcat Flash Chat: —

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| BALROG | 19.3% | — |

## Reasoning

- Claude 3.5 Haiku: 17.1 (#286)
- Longcat Flash Chat: 18.3 (#267)

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Hard Prompts | 1251 | 1440 |
| Kagi LLM Benchmark | — | 43.9% |
| NYT Connections (extended) | — | 17.7% |
| CritPt | 0% | — |
| LiveBench Reasoning | 28.1% | — |
| DTBench | 56.7% | — |
| LiveBench Data Analysis | 48.5% | — |
| Epoch Capabilities Index | 127.15 | — |
| LiveBench | 43.5% | — |

## Math

- Claude 3.5 Haiku: 13.7 (#294)
- Longcat Flash Chat: 36.6 (#107)

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Math | 1244 | 1441 |
| OTIS Mock AIME 2024-2025 | 4.3% | — |
| Omni-MATH | 22.4% | — |
| LiveBench Math | 35.5% | — |
| MATH Level 5 | 46.4% | — |
| FrontierMath (Feb 2025 set) | 0.3% | — |

## Knowledge

- Claude 3.5 Haiku: 18.7 (#276)
- Longcat Flash Chat: 40.0 (#111)

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Expert | 1208 | 1454 |
| GPQA Diamond | 38.1% | — |
| MMLU-Pro | 60.5% | — |
| Confabulations | 36.7% | — |
| GPQA (HELM) | 36.3% | — |
| MMLU | 74.3% | — |

## Multimodal

- Claude 3.5 Haiku: 26.3 (#113)
- Longcat Flash Chat: —

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Vision | 1092 | — |
| GeoBench | 34% | — |

## Multilingual

- Claude 3.5 Haiku: 40.2 (#213)
- Longcat Flash Chat: 52.1 (#95)

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Non-English | 1238 | 1404 |
| LMArena Chinese | 1229 | 1465 |
| LMArena French | 1262 | 1457 |
| LMArena German | 1237 | 1409 |
| LMArena Japanese | 1175 | 1373 |
| LMArena Korean | 1172 | 1372 |
| LMArena Russian | 1253 | 1396 |
| LMArena Spanish | 1261 | 1445 |

## Instruction Following

- Claude 3.5 Haiku: 63.1 (#229)
- Longcat Flash Chat: 74.6 (#92)

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Instruction Following | 1241 | 1411 |
| LiveBench Instruction Following | 61.9% | — |
| IFEval | 79.2% | — |

## Long Context

- Claude 3.5 Haiku: 38.3 (#195)
- Longcat Flash Chat: 43.5 (#89)

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Longer Query | 1261 | 1425 |

## Writing & Preference

- Claude 3.5 Haiku: 42.9 (#228)
- Longcat Flash Chat: 61.2 (#88)

| Benchmark | Claude 3.5 Haiku | Longcat Flash Chat |
|---|---|---|
| LMArena Text | 1255 | 1427 |
| LMArena Creative Writing | 1233 | 1388 |
| LMArena Multi-Turn | 1265 | 1418 |
| Short-Story Creative Writing | 73.5% | — |
| EQ-Bench Creative Writing | 1146 | — |
| WildBench | 76% | — |
| LiveBench Language | 35.4% | — |

## FAQ

### Is Claude 3.5 Haiku better than Longcat Flash Chat?

Longcat Flash Chat is the stronger model overall, scoring 41.5 to 28.9 on the Noometry Index.

### Is Claude 3.5 Haiku or Longcat Flash Chat better for coding?

Longcat Flash Chat scores higher on coding benchmarks: 42.9 versus 32.6 in the Noometry coding category.

### How many benchmarks do Claude 3.5 Haiku and Longcat Flash Chat share?

17 benchmarks have published results for both models. Claude 3.5 Haiku has 49 scored results on Noometry and Longcat Flash Chat has 19.