# Claude 2 vs Claude 3 Haiku

> Claude 3 Haiku is the stronger model overall, scoring 25.7 to 24.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-2-vs-claude-3-haiku
- Last updated: 2026-10-10
- Shared benchmarks: 7

## Summary

- They share 7 benchmarks with published results for both. Claude 2 scores higher in 1 category and Claude 3 Haiku in 2 categories; one gap is clear of the uncertainty.
- The widest gap is in reasoning, where Claude 2 leads 20.8 to 15.7.

## Snapshot

| | Claude 2 | Claude 3 Haiku |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | 24.7 | 25.7 |
| Rank | 342 | 333 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2: —
- Claude 3 Haiku: 26.1 (#320)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| HumanEval+ | 61.6% | 68.9% |
| WeirdML | — | 9.8% |
| BigCodeBench Instruct | — | 39.4% |
| LMArena Coding | — | 1199 |
| BigCodeBench Complete | — | 50.1% |
| CadEval | — | 12% |
| MBPP+ | — | 68.8% |

## Reasoning

- Claude 2: 20.8 (#213)
- Claude 3 Haiku: 15.7 (#303)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| DTBench | 51.9% | 50.1% |
| Epoch Capabilities Index | 120.08 | 118.3 |
| Kagi LLM Benchmark | — | 34.2% |
| LMArena Hard Prompts | — | 1174 |
| LMCA | — | 8.8% |
| ForecastBench | — | 53.2 |
| WinoGrande | — | 74.2% |

## Math

- Claude 2: 8.7 (#314)
- Claude 3 Haiku: 9.2 (#313)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 1.8% |
| MATH Level 5 | 11.7% | 14.9% |
| LMArena Math | — | 1188 |

## Knowledge

- Claude 2: 17.0 (#282)
- Claude 3 Haiku: 17.3 (#280)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| GPQA Diamond | 34.7% | 36.3% |
| MMLU | 78.5% | 73.8% |
| Confabulations | — | 34.2% |
| LMArena Expert | — | 1148 |
| TriviaQA | 87.5% | — |

## Multimodal

- Claude 2: —
- Claude 3 Haiku: 23.1 (#123)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| LMArena Vision | — | 950 |
| ScienceQA | — | 72% |

## Multilingual

- Claude 2: —
- Claude 3 Haiku: 36.1 (#238)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| LMArena Non-English | — | 1178 |
| LMArena Chinese | — | 1155 |
| LMArena French | — | 1194 |
| LMArena German | — | 1174 |
| LMArena Japanese | — | 1102 |
| LMArena Korean | — | 1108 |
| LMArena Russian | — | 1204 |
| LMArena Spanish | — | 1165 |

## Instruction Following

- Claude 2: —
- Claude 3 Haiku: 61.5 (#242)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| LMArena Instruction Following | — | 1174 |

## Long Context

- Claude 2: —
- Claude 3 Haiku: 36.1 (#232)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| LMArena Longer Query | — | 1191 |

## Writing & Preference

- Claude 2: —
- Claude 3 Haiku: 29.8 (#286)

| Benchmark | Claude 2 | Claude 3 Haiku |
|---|---|---|
| LMArena Text | — | 1195 |
| LMArena Creative Writing | — | 1157 |
| EQ-Bench Creative Writing | — | 717 |
| LMArena Multi-Turn | — | 1190 |

## FAQ

### Is Claude 2 better than Claude 3 Haiku?

Claude 3 Haiku is the stronger model overall, scoring 25.7 to 24.7 on the Noometry Index.

### How many benchmarks do Claude 2 and Claude 3 Haiku share?

7 benchmarks have published results for both models. Claude 2 has 8 scored results on Noometry and Claude 3 Haiku has 37.