# Amazon Nova Experimental Chat 12 10 vs Step 3

> Amazon Nova Experimental Chat 12 10 is the stronger model overall, scoring 42.9 to 40.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-12-10-vs-step-3
- Last updated: 2026-10-10
- Shared benchmarks: 12

## Summary

- They share 12 benchmarks with published results for both. Amazon Nova Experimental Chat 12 10 scores higher in 8 categories and Step 3 in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Amazon Nova Experimental Chat 12 10 leads 59.5 to 54.3.
- Step 3 has downloadable open weights; the other is API-only.

## Snapshot

| | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| Provider | Amazon | StepFun |
| Noometry Index | 42.9 | 40.5 |
| Rank | 104 | 149 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Amazon Nova Experimental Chat 12 10: 42.2 (#110)
- Step 3: 40.1 (#147)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Coding | 1430 | 1367 |

## Reasoning

- Amazon Nova Experimental Chat 12 10: 29.3 (#94)
- Step 3: 28.4 (#105)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Hard Prompts | 1427 | 1355 |
| Kagi LLM Benchmark | — | 62.3% |

## Math

- Amazon Nova Experimental Chat 12 10: 38.9 (#124)
- Step 3: 37.6 (#148)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Math | 1419 | 1366 |

## Knowledge

- Amazon Nova Experimental Chat 12 10: 39.2 (#136)
- Step 3: 36.8 (#164)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Expert | 1408 | 1333 |

## Multimodal

- Amazon Nova Experimental Chat 12 10: —
- Step 3: 35.5 (#86)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Vision | — | 1177 |

## Multilingual

- Amazon Nova Experimental Chat 12 10: 51.4 (#108)
- Step 3: 46.3 (#159)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Non-English | 1398 | 1327 |
| LMArena Chinese | 1440 | 1397 |
| LMArena Russian | 1395 | 1331 |
| LMArena German | — | 1371 |
| LMArena Korean | — | 1269 |
| LMArena Spanish | — | 1371 |

## Instruction Following

- Amazon Nova Experimental Chat 12 10: 73.2 (#123)
- Step 3: 70.4 (#164)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Instruction Following | 1387 | 1332 |

## Long Context

- Amazon Nova Experimental Chat 12 10: 42.4 (#125)
- Step 3: 40.3 (#157)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Longer Query | 1391 | 1326 |

## Writing & Preference

- Amazon Nova Experimental Chat 12 10: 59.5 (#110)
- Step 3: 54.3 (#151)

| Benchmark | Amazon Nova Experimental Chat 12 10 | Step 3 |
|---|---|---|
| LMArena Text | 1420 | 1350 |
| LMArena Creative Writing | 1350 | 1321 |
| LMArena Multi-Turn | 1409 | 1341 |

## FAQ

### Is Amazon Nova Experimental Chat 12 10 better than Step 3?

Amazon Nova Experimental Chat 12 10 is the stronger model overall, scoring 42.9 to 40.5 on the Noometry Index.

### Is Amazon Nova Experimental Chat 12 10 or Step 3 better for coding?

Amazon Nova Experimental Chat 12 10 scores higher on coding benchmarks: 42.2 versus 40.1 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 12 10 and Step 3 share?

12 benchmarks have published results for both models. Amazon Nova Experimental Chat 12 10 has 12 scored results on Noometry and Step 3 has 17.