# Claude 2 vs Claude 2.1

> Claude 2 and Claude 2.1 score almost the same on the Noometry Index (24.7 vs 24.9), so choose on price, context window or the category you care about most.

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

## Summary

- They share 5 benchmarks with published results for both. Claude 2 scores higher in 2 categories and Claude 2.1 in 1 category; one gap is clear of the uncertainty.

## Snapshot

| | Claude 2 | Claude 2.1 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | 24.7 | 24.9 |
| Rank | 342 | 340 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2: —
- Claude 2.1: 25.8 (#322)

| Benchmark | Claude 2 | Claude 2.1 |
|---|---|---|
| WeirdML | — | 7.1% |
| HumanEval+ | 61.6% | — |

## Reasoning

- Claude 2: 20.8 (#213)
- Claude 2.1: 20.6 (#216)

| Benchmark | Claude 2 | Claude 2.1 |
|---|---|---|
| DTBench | 51.9% | 51% |
| Epoch Capabilities Index | 120.08 | 119.22 |
| ForecastBench | — | 54.2 |

## Math

- Claude 2: 8.7 (#314)
- Claude 2.1: 9.6 (#309)

| Benchmark | Claude 2 | Claude 2.1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 1.9% |
| MATH Level 5 | 11.7% | — |

## Knowledge

- Claude 2: 17.0 (#282)
- Claude 2.1: 15.5 (#287)

| Benchmark | Claude 2 | Claude 2.1 |
|---|---|---|
| GPQA Diamond | 34.7% | 33% |
| MMLU | 78.5% | 73.5% |
| TriviaQA | 87.5% | — |

## FAQ

### Is Claude 2 better than Claude 2.1?

Claude 2 and Claude 2.1 score almost the same on the Noometry Index (24.7 vs 24.9), so choose on price, context window or the category you care about most.

### How many benchmarks do Claude 2 and Claude 2.1 share?

5 benchmarks have published results for both models. Claude 2 has 8 scored results on Noometry and Claude 2.1 has 7.