# Claude 3 Haiku vs GPT-5.3 Chat

> GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 25.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-haiku-vs-gpt-5-3-chat
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Claude 3 Haiku scores higher in 0 categories and GPT-5.3 Chat in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.3 Chat leads 63.1 to 29.7.

## Snapshot

| | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 25.9 | 42.8 |
| Rank | 340 | 109 |
| Context | — | 128K |
| Input $/M | — | $1.75 |
| Output $/M | — | $14 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Haiku: 26.4 (#325)
- GPT-5.3 Chat: 41.4 (#124)

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Coding | 1199 | 1408 |
| WeirdML | 9.8% | — |
| BigCodeBench Instruct | 39.4% | — |
| BigCodeBench Complete | 50.1% | — |
| CadEval | 12% | — |
| HumanEval+ | 68.9% | — |
| MBPP+ | 68.8% | — |

## Reasoning

- Claude 3 Haiku: 16.3 (#307)
- GPT-5.3 Chat: 28.5 (#102)

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Hard Prompts | 1174 | 1399 |
| Kagi LLM Benchmark | 34.2% | — |
| DTBench | 50.1% | — |
| LMCA | 8.8% | — |
| Epoch Capabilities Index | 118.35 | — |
| ForecastBench | 53.2 | — |
| WinoGrande | 74.2% | — |

## Math

- Claude 3 Haiku: 9.8 (#319)
- GPT-5.3 Chat: 38.2 (#142)

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Math | 1188 | 1389 |
| OTIS Mock AIME 2024-2025 | 1.8% | — |
| MATH Level 5 | 14.9% | — |

## Knowledge

- Claude 3 Haiku: 17.3 (#285)
- GPT-5.3 Chat: 38.8 (#140)

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Expert | 1148 | 1397 |
| GPQA Diamond | 36.3% | — |
| Confabulations | 34.2% | — |
| MMLU | 73.8% | — |

## Multimodal

- Claude 3 Haiku: 23.6 (#128)
- GPT-5.3 Chat: —

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Vision | 950 | — |
| ScienceQA | 72% | — |

## Multilingual

- Claude 3 Haiku: 36.0 (#243)
- GPT-5.3 Chat: 50.3 (#124)

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Non-English | 1178 | 1382 |
| LMArena Chinese | 1155 | 1432 |
| LMArena French | 1195 | 1397 |
| LMArena German | 1174 | 1384 |
| LMArena Japanese | 1102 | 1352 |
| LMArena Korean | 1109 | 1346 |
| LMArena Russian | 1204 | 1400 |
| LMArena Spanish | 1166 | 1371 |

## Instruction Following

- Claude 3 Haiku: 61.3 (#247)
- GPT-5.3 Chat: 72.8 (#129)

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Instruction Following | 1173 | 1378 |

## Long Context

- Claude 3 Haiku: 36.1 (#237)
- GPT-5.3 Chat: 42.6 (#120)

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Longer Query | 1190 | 1396 |

## Writing & Preference

- Claude 3 Haiku: 29.7 (#291)
- GPT-5.3 Chat: 63.1 (#68)

| Benchmark | Claude 3 Haiku | GPT-5.3 Chat |
|---|---|---|
| LMArena Text | 1195 | 1389 |
| LMArena Creative Writing | 1157 | 1355 |
| EQ-Bench Creative Writing | 717 | 1690 |
| LMArena Multi-Turn | 1190 | 1412 |

## FAQ

### Is Claude 3 Haiku better than GPT-5.3 Chat?

GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 25.9 on the Noometry Index.

### Is Claude 3 Haiku or GPT-5.3 Chat better for coding?

GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 26.4 in the Noometry coding category.

### How many benchmarks do Claude 3 Haiku and GPT-5.3 Chat share?

18 benchmarks have published results for both models. Claude 3 Haiku has 37 scored results on Noometry and GPT-5.3 Chat has 18.