# Amazon Nova Experimental Chat 10 20 vs Mercury 2.5

> Amazon Nova Experimental Chat 10 20 is the stronger model overall, scoring 42.1 to 33.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-20-vs-mercury-2-5
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Amazon Nova Experimental Chat 10 20 leads 39.0 to 23.3.

## Snapshot

| | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| Provider | Amazon | Inception |
| Noometry Index | 42.1 | 33.5 |
| Rank | 118 | 242 |
| Context | — | 260K |
| Input $/M | — | $0.04 |
| Output $/M | — | $0.15 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Experimental Chat 10 20: 41.6 (#123)
- Mercury 2.5: 39.5 (#156)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| SciCode | — | 38.5% |
| LMArena Coding | 1412 | — |
| ALE-Bench | — | 301.65 |

## Reasoning

- Amazon Nova Experimental Chat 10 20: 28.4 (#106)
- Mercury 2.5: 22.4 (#193)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| CritPt | — | 0% |
| LMArena Hard Prompts | 1396 | — |

## Math

- Amazon Nova Experimental Chat 10 20: 39.0 (#119)
- Mercury 2.5: 23.3 (#272)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| ProofBench | — | 3% |
| LMArena Math | 1425 | — |

## Knowledge

- Amazon Nova Experimental Chat 10 20: 38.5 (#144)
- Mercury 2.5: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| LMArena Expert | 1386 | — |

## Multilingual

- Amazon Nova Experimental Chat 10 20: 49.5 (#131)
- Mercury 2.5: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| LMArena Non-English | 1372 | — |
| LMArena Chinese | 1404 | — |
| LMArena French | 1425 | — |
| LMArena German | 1391 | — |
| LMArena Japanese | 1360 | — |
| LMArena Korean | 1324 | — |
| LMArena Russian | 1371 | — |
| LMArena Spanish | 1382 | — |

## Instruction Following

- Amazon Nova Experimental Chat 10 20: 72.1 (#141)
- Mercury 2.5: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| LMArena Instruction Following | 1365 | — |

## Long Context

- Amazon Nova Experimental Chat 10 20: 41.7 (#133)
- Mercury 2.5: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| LMArena Longer Query | 1370 | — |

## Writing & Preference

- Amazon Nova Experimental Chat 10 20: 56.6 (#136)
- Mercury 2.5: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Mercury 2.5 |
|---|---|---|
| LMArena Text | 1394 | — |
| LMArena Creative Writing | 1318 | — |
| LMArena Multi-Turn | 1364 | — |

## FAQ

### Is Amazon Nova Experimental Chat 10 20 better than Mercury 2.5?

Amazon Nova Experimental Chat 10 20 is the stronger model overall, scoring 42.1 to 33.5 on the Noometry Index.

### Is Amazon Nova Experimental Chat 10 20 or Mercury 2.5 better for coding?

Amazon Nova Experimental Chat 10 20 scores higher on coding benchmarks: 41.6 versus 39.5 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 20 and Mercury 2.5 share?

0 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and Mercury 2.5 has 4.