# Claude 2.1 vs GPT-5 Pro

> GPT-5 Pro is the stronger model overall, scoring 46.2 to 24.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-2-1-vs-gpt-5-pro
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and GPT-5 Pro in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5 Pro leads 56.2 to 15.5.
- The biggest single-benchmark swing is WeirdML: 7.1% for Claude 2.1 and 60.4% for GPT-5 Pro.

## Snapshot

| | Claude 2.1 | GPT-5 Pro |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 24.9 | 46.2 |
| Rank | 340 | 58 |
| Context | — | 400K |
| Input $/M | — | $15 |
| Output $/M | — | $120 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2.1: 25.8 (#322)
- GPT-5 Pro: 43.4 (#77)

| Benchmark | Claude 2.1 | GPT-5 Pro |
|---|---|---|
| WeirdML | 7.1% | 60.4% |
| AlgoTune | — | 1.31 |

## Reasoning

- Claude 2.1: 20.6 (#216)
- GPT-5 Pro: 39.2 (#52)

| Benchmark | Claude 2.1 | GPT-5 Pro |
|---|---|---|
| Epoch Capabilities Index | 119.22 | 150.26 |
| ARC-AGI-2 | — | 18.3% |
| SimpleBench | — | 61.6% |
| Kagi LLM Benchmark | — | 76.8% |
| ARC-AGI-1 | — | 70.2% |
| EnigmaEval | — | 18.8% |
| DTBench | 51% | — |
| ForecastBench | 54.2 | — |

## Math

- Claude 2.1: 9.6 (#309)
- GPT-5 Pro: 48.0 (#53)

| Benchmark | Claude 2.1 | GPT-5 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 55.8% |
| FrontierMath Tier 4 | — | 19.5% |
| OTIS Mock AIME 2024-2025 | 1.9% | — |
| FrontierMath Tier 4 (v1) | — | 14.6% |

## Knowledge

- Claude 2.1: 15.5 (#287)
- GPT-5 Pro: 56.2 (#39)

| Benchmark | Claude 2.1 | GPT-5 Pro |
|---|---|---|
| GPQA Diamond | 33% | — |
| Humanity's Last Exam | — | 31.6% |
| MMLU | 73.5% | — |

## FAQ

### Is Claude 2.1 better than GPT-5 Pro?

GPT-5 Pro is the stronger model overall, scoring 46.2 to 24.9 on the Noometry Index.

### Is Claude 2.1 or GPT-5 Pro better for coding?

GPT-5 Pro scores higher on coding benchmarks: 43.4 versus 25.8 in the Noometry coding category.

### How many benchmarks do Claude 2.1 and GPT-5 Pro share?

2 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and GPT-5 Pro has 12.