# Claude 2.1 vs GPT-4o

> GPT-4o is the stronger model overall, scoring 28.5 to 24.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-2-1-vs-gpt-4o
- Last updated: 2026-10-10
- Shared benchmarks: 7

## Summary

- They share 7 benchmarks with published results for both. Claude 2.1 scores higher in 2 categories and GPT-4o in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-4o leads 28.8 to 15.5.
- The biggest single-benchmark swing is WeirdML: 7.1% for Claude 2.1 and 25.1% for GPT-4o.

## Snapshot

| | Claude 2.1 | GPT-4o |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 24.9 | 28.5 |
| Rank | 340 | 316 |
| Context | — | 128K |
| Input $/M | — | $2.50 |
| Output $/M | — | $10 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2.1: 25.8 (#322)
- GPT-4o: 25.1 (#323)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| WeirdML | 7.1% | 25.1% |
| SWE-bench Verified | — | 31% |
| SWE-bench Verified (bash only) | — | 21.6% |
| Aider Polyglot | — | 45.3% |
| GSO | — | 0% |
| BigCodeBench Instruct | — | 51.1% |
| LiveBench Coding | — | 51.4% |
| LMArena Coding | — | 1297 |
| BigCodeBench Complete | — | 61.1% |
| CadEval | — | 26% |
| HumanEval+ | — | 87.2% |
| MBPP+ | — | 72.2% |

## Agentic & Tool Use

- Claude 2.1: —
- GPT-4o: 20.8 (#133)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| GDPval | — | 9.9% |
| TheAgentCompany | — | 8.6% |
| Cybench | — | 12.5% |
| BALROG | — | 32.3% |
| LMArena Search | — | 1006 |
| METR Time Horizons | — | 40.8% |

## Reasoning

- Claude 2.1: 20.6 (#216)
- GPT-4o: 9.4 (#338)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| DTBench | 51% | 64.5% |
| Epoch Capabilities Index | 119.22 | 128.97 |
| ForecastBench | 54.2 | 57.7 |
| ARC-AGI-2 | — | 0% |
| SimpleBench | — | 17.8% |
| ARC-AGI-1 | — | 4.5% |
| CritPt | — | 0% |
| Chess Puzzles | — | 13% |
| EnigmaEval | — | 0.8% |
| LiveBench Reasoning | — | 55.8% |
| LMArena Hard Prompts | — | 1281 |
| LiveBench Data Analysis | — | 60.9% |
| LMCA | — | 16.6% |
| LiveBench | — | 55.3% |

## Math

- Claude 2.1: 9.6 (#309)
- GPT-4o: 10.2 (#303)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 6.4% |
| FrontierMath (Tiers 1-3) | — | 0.4% |
| Omni-MATH | — | 29.3% |
| LiveBench Math | — | 49.5% |
| LMArena Math | — | 1285 |
| MATH Level 5 | — | 53.3% |
| FrontierMath (Feb 2025 set) | — | 0.3% |

## Knowledge

- Claude 2.1: 15.5 (#287)
- GPT-4o: 28.8 (#235)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| GPQA Diamond | 33% | 49.2% |
| MMLU | 73.5% | 88.1% |
| Humanity's Last Exam | — | 2.7% |
| SimpleQA Verified | — | 26% |
| MMLU-Pro | — | 71.3% |
| Confabulations | — | 15.3% |
| Vectara Hallucination Rate | — | 9.6% |
| GPQA (HELM) | — | 52% |
| LMArena Expert | — | 1250 |

## Multimodal

- Claude 2.1: —
- GPT-4o: 33.9 (#85)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| LMArena Vision | — | 1137 |
| Video-MME | — | 71.9% |
| GeoBench | — | 71% |
| VPCT | — | 40% |
| ScienceQA | — | 88.5% |

## Multilingual

- Claude 2.1: —
- GPT-4o: 43.4 (#181)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| LMArena Non-English | — | 1283 |
| LMArena Chinese | — | 1277 |
| LMArena French | — | 1303 |
| LMArena German | — | 1282 |
| LMArena Japanese | — | 1257 |
| LMArena Korean | — | 1234 |
| LMArena Russian | — | 1286 |
| LMArena Spanish | — | 1292 |

## Instruction Following

- Claude 2.1: —
- GPT-4o: 66.8 (#202)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| LiveBench Instruction Following | — | 68.6% |
| IFEval | — | 81.7% |
| LMArena Instruction Following | — | 1278 |

## Long Context

- Claude 2.1: —
- GPT-4o: 39.4 (#174)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| Fiction.LiveBench | — | 66.7% |
| LMArena Longer Query | — | 1289 |

## Writing & Preference

- Claude 2.1: —
- GPT-4o: 52.8 (#160)

| Benchmark | Claude 2.1 | GPT-4o |
|---|---|---|
| LMArena Text | — | 1300 |
| LMArena Creative Writing | — | 1291 |
| Short-Story Creative Writing | — | 81.8% |
| WildBench | — | 82.8% |
| LMArena Multi-Turn | — | 1302 |
| LiveBench Language | — | 47.6% |

## FAQ

### Is Claude 2.1 better than GPT-4o?

GPT-4o is the stronger model overall, scoring 28.5 to 24.9 on the Noometry Index.

### Is Claude 2.1 or GPT-4o better for coding?

They score almost the same on coding (25.8 vs 25.1); test both on your own repository before choosing.

### How many benchmarks do Claude 2.1 and GPT-4o share?

7 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and GPT-4o has 72.