# Amazon Nova Experimental Chat 10 20 vs Devstral Small 2505

> Amazon Nova Experimental Chat 10 20 is the stronger model overall, scoring 41.5 to 33.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-20-vs-devstral-small
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where Amazon Nova Experimental Chat 10 20 leads 27.3 to 19.1.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| Provider | Amazon | Mistral AI |
| Noometry Index | 41.5 | 33.9 |
| Rank | 122 | 228 |
| Context | — | 128K |
| Input $/M | — | $0.10 |
| Output $/M | — | $0.30 |
| Weights | Proprietary | Open |

## Coding

- Amazon Nova Experimental Chat 10 20: 41.0 (#123)
- Devstral Small 2505: 38.6 (#160)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| SWE-bench Verified (bash only) | — | 56.4% |
| SciCode | — | 28.8% |
| LMArena Coding | 1413 | — |

## Reasoning

- Amazon Nova Experimental Chat 10 20: 27.3 (#110)
- Devstral Small 2505: 19.1 (#243)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| Kagi LLM Benchmark | — | 37.7% |
| CritPt | — | 0% |
| LMArena Hard Prompts | 1396 | — |

## Math

- Amazon Nova Experimental Chat 10 20: 36.2 (#121)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| LMArena Math | 1425 | — |

## Knowledge

- Amazon Nova Experimental Chat 10 20: 37.8 (#142)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| LMArena Expert | 1385 | — |

## Multilingual

- Amazon Nova Experimental Chat 10 20: 49.7 (#127)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| LMArena Non-English | 1372 | — |
| LMArena Chinese | 1405 | — |
| LMArena French | 1426 | — |
| LMArena German | 1391 | — |
| LMArena Japanese | 1355 | — |
| LMArena Korean | 1327 | — |
| LMArena Russian | 1371 | — |
| LMArena Spanish | 1381 | — |

## Instruction Following

- Amazon Nova Experimental Chat 10 20: 72.3 (#136)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| LMArena Instruction Following | 1365 | — |

## Long Context

- Amazon Nova Experimental Chat 10 20: 41.7 (#128)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| LMArena Longer Query | 1370 | — |

## Writing & Preference

- Amazon Nova Experimental Chat 10 20: 56.9 (#131)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 20 | Devstral Small 2505 |
|---|---|---|
| LMArena Text | 1394 | — |
| LMArena Creative Writing | 1318 | — |
| LMArena Multi-Turn | 1364 | — |

## FAQ

### Is Amazon Nova Experimental Chat 10 20 better than Devstral Small 2505?

Amazon Nova Experimental Chat 10 20 is the stronger model overall, scoring 41.5 to 33.9 on the Noometry Index.

### Is Amazon Nova Experimental Chat 10 20 or Devstral Small 2505 better for coding?

Amazon Nova Experimental Chat 10 20 scores higher on coding benchmarks: 41.0 versus 38.6 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 20 and Devstral Small 2505 share?

0 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and Devstral Small 2505 has 4.