# Claude 2.1 vs Mercury 2.5

> Claude 2.1 has enough public results to be ranked (#340); Mercury 2.5 does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/claude-2-1-vs-mercury-2-5
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Mercury 2.5 leads 22.4 to 9.6.

## Snapshot

| | Claude 2.1 | Mercury 2.5 |
|---|---|---|
| Provider | Anthropic | Inception |
| Noometry Index | 24.9 | 30.2 |
| Rank | 340 | — |
| Context | — | 260K |
| Input $/M | — | $0.04 |
| Output $/M | — | $0.15 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2.1: 25.8 (#322)
- Mercury 2.5: —

| Benchmark | Claude 2.1 | Mercury 2.5 |
|---|---|---|
| WeirdML | 7.1% | — |
| ALE-Bench | — | 301.65 |

## Reasoning

- Claude 2.1: 20.6 (#216)
- Mercury 2.5: —

| Benchmark | Claude 2.1 | Mercury 2.5 |
|---|---|---|
| DTBench | 51% | — |
| Epoch Capabilities Index | 119.22 | — |
| ForecastBench | 54.2 | — |

## Math

- Claude 2.1: 9.6 (#309)
- Mercury 2.5: 22.4

| Benchmark | Claude 2.1 | Mercury 2.5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | — |
| ProofBench | — | 3% |

## Knowledge

- Claude 2.1: 15.5 (#287)
- Mercury 2.5: —

| Benchmark | Claude 2.1 | Mercury 2.5 |
|---|---|---|
| GPQA Diamond | 33% | — |
| MMLU | 73.5% | — |

## FAQ

### Is Claude 2.1 better than Mercury 2.5?

Claude 2.1 has enough public results to be ranked (#340); Mercury 2.5 does not yet, so treat this comparison as directional.

### How many benchmarks do Claude 2.1 and Mercury 2.5 share?

0 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Mercury 2.5 has 2.