# Amazon Nova Experimental Chat 10 09 vs Devstral Small 2505

> Amazon Nova Experimental Chat 10 09 is the stronger model overall, scoring 41.9 to 34.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-09-vs-devstral-small
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where Amazon Nova Experimental Chat 10 09 leads 27.3 to 19.7.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Amazon Nova Experimental Chat 10 09 | Devstral Small 2505 |
|---|---|---|
| Provider | Amazon | Mistral AI |
| Noometry Index | 41.9 | 34.3 |
| Rank | 126 | 233 |
| Context | — | 128K |
| Input $/M | — | $0.10 |
| Output $/M | — | $0.30 |
| Weights | Proprietary | Open |

## Coding

- Amazon Nova Experimental Chat 10 09: 40.2 (#145)
- Devstral Small 2505: 38.9 (#166)

| Benchmark | Amazon Nova Experimental Chat 10 09 | Devstral Small 2505 |
|---|---|---|
| SWE-bench Verified (bash only) | — | 56.4% |
| SciCode | — | 28.8% |
| LMArena Coding | 1370 | — |

## Reasoning

- Amazon Nova Experimental Chat 10 09: 27.3 (#120)
- Devstral Small 2505: 19.7 (#252)

| Benchmark | Amazon Nova Experimental Chat 10 09 | Devstral Small 2505 |
|---|---|---|
| Kagi LLM Benchmark | — | 37.7% |
| CritPt | — | 0% |
| LMArena Hard Prompts | 1356 | — |

## Multilingual

- Amazon Nova Experimental Chat 10 09: 47.3 (#150)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | Devstral Small 2505 |
|---|---|---|
| LMArena Non-English | 1340 | — |
| LMArena Chinese | 1341 | — |

## Instruction Following

- Amazon Nova Experimental Chat 10 09: 69.4 (#172)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | Devstral Small 2505 |
|---|---|---|
| LMArena Instruction Following | 1315 | — |

## Long Context

- Amazon Nova Experimental Chat 10 09: 40.5 (#152)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | Devstral Small 2505 |
|---|---|---|
| LMArena Longer Query | 1333 | — |

## Writing & Preference

- Amazon Nova Experimental Chat 10 09: 54.7 (#149)
- Devstral Small 2505: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | Devstral Small 2505 |
|---|---|---|
| LMArena Text | 1364 | — |
| LMArena Creative Writing | 1307 | — |
| LMArena Multi-Turn | 1355 | — |

## FAQ

### Is Amazon Nova Experimental Chat 10 09 better than Devstral Small 2505?

Amazon Nova Experimental Chat 10 09 is the stronger model overall, scoring 41.9 to 34.3 on the Noometry Index.

### Is Amazon Nova Experimental Chat 10 09 or Devstral Small 2505 better for coding?

Amazon Nova Experimental Chat 10 09 scores higher on coding benchmarks: 40.2 versus 38.9 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 09 and Devstral Small 2505 share?

0 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and Devstral Small 2505 has 4.