# Mercury vs Mercury 2.5

> Mercury has enough public results to be ranked (#192); Mercury 2.5 does not yet, so treat this comparison as directional.

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

## Snapshot

| | Mercury | Mercury 2.5 |
|---|---|---|
| Provider | Inception | Inception |
| Noometry Index | 37.3 | 30.2 |
| Rank | 192 | — |
| Context | — | 260K |
| Input $/M | — | $0.04 |
| Output $/M | — | $0.15 |
| Weights | Proprietary | Proprietary |

## Coding

- Mercury: 38.1 (#164)
- Mercury 2.5: —

| Benchmark | Mercury | Mercury 2.5 |
|---|---|---|
| LMArena Coding | 1323 | — |
| ALE-Bench | — | 301.65 |

## Reasoning

- Mercury: 16.8 (#288)
- Mercury 2.5: —

| Benchmark | Mercury | Mercury 2.5 |
|---|---|---|
| Kagi LLM Benchmark | 21.6% | — |
| LMArena Hard Prompts | 1284 | — |

## Math

- Mercury: —
- Mercury 2.5: 22.4

| Benchmark | Mercury | Mercury 2.5 |
|---|---|---|
| ProofBench | — | 3% |

## Multilingual

- Mercury: 41.7 (#201)
- Mercury 2.5: —

| Benchmark | Mercury | Mercury 2.5 |
|---|---|---|
| LMArena Non-English | 1259 | — |

## Instruction Following

- Mercury: 65.3 (#220)
- Mercury 2.5: —

| Benchmark | Mercury | Mercury 2.5 |
|---|---|---|
| LMArena Instruction Following | 1238 | — |

## Long Context

- Mercury: 38.3 (#193)
- Mercury 2.5: —

| Benchmark | Mercury | Mercury 2.5 |
|---|---|---|
| LMArena Longer Query | 1264 | — |

## Writing & Preference

- Mercury: 46.2 (#216)
- Mercury 2.5: —

| Benchmark | Mercury | Mercury 2.5 |
|---|---|---|
| LMArena Text | 1282 | — |
| LMArena Creative Writing | 1186 | — |
| LMArena Multi-Turn | 1283 | — |

## FAQ

### Is Mercury better than Mercury 2.5?

Mercury has enough public results to be ranked (#192); Mercury 2.5 does not yet, so treat this comparison as directional.

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

0 benchmarks have published results for both models. Mercury has 9 scored results on Noometry and Mercury 2.5 has 2.