# Amazon Nova Experimental Chat 10 20 vs Command R+

> Amazon Nova Experimental Chat 10 20 is the stronger model overall, scoring 41.5 to 32.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-20-vs-command-r-plus
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Amazon Nova Experimental Chat 10 20 scores higher in 8 categories and Command R+ in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Amazon Nova Experimental Chat 10 20 leads 27.3 to 8.9.
- Command R+ has downloadable open weights; the other is API-only.

## Snapshot

| | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| Provider | Amazon | Cohere |
| Noometry Index | 41.5 | 32.0 |
| Rank | 122 | 251 |
| Context | — | 128K |
| Input $/M | — | $2.50 |
| Output $/M | — | $10 |
| Weights | Proprietary | Open |

## Coding

- Amazon Nova Experimental Chat 10 20: 41.0 (#123)
- Command R+: 28.6 (#304)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| LMArena Coding | 1413 | 1187 |
| BigCodeBench Instruct | — | 33.8% |
| LiveBench Coding | — | 19.1% |
| BigCodeBench Complete | — | 41.9% |
| HumanEval+ | — | 56.7% |
| MBPP+ | — | 63.5% |

## Reasoning

- Amazon Nova Experimental Chat 10 20: 27.3 (#110)
- Command R+: 8.9 (#341)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| LMArena Hard Prompts | 1396 | 1186 |
| SimpleBench | — | 17.4% |
| LiveBench Reasoning | — | 24.8% |
| DTBench | — | 54.9% |
| LiveBench Data Analysis | — | 38.1% |
| LMCA | — | 5% |
| Epoch Capabilities Index | — | 119.28 |
| LiveBench | — | 31.8% |

## Math

- Amazon Nova Experimental Chat 10 20: 36.2 (#121)
- Command R+: 26.6 (#239)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| LMArena Math | 1425 | 1188 |
| LiveBench Math | — | 21.3% |

## Knowledge

- Amazon Nova Experimental Chat 10 20: 37.8 (#142)
- Command R+: 35.9 (#165)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| LMArena Expert | 1385 | 1174 |
| Vectara Hallucination Rate | — | 6.9% |
| MMLU | — | 69.4% |

## Multilingual

- Amazon Nova Experimental Chat 10 20: 49.7 (#127)
- Command R+: 38.8 (#222)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| LMArena Non-English | 1372 | 1216 |
| LMArena Chinese | 1405 | 1226 |
| LMArena French | 1426 | 1208 |
| LMArena German | 1391 | 1216 |
| LMArena Japanese | 1355 | 1166 |
| LMArena Korean | 1327 | 1138 |
| LMArena Russian | 1371 | 1227 |
| LMArena Spanish | 1381 | 1189 |

## Instruction Following

- Amazon Nova Experimental Chat 10 20: 72.3 (#136)
- Command R+: 60.2 (#249)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| LMArena Instruction Following | 1365 | 1197 |
| LiveBench Instruction Following | — | 57.6% |

## Long Context

- Amazon Nova Experimental Chat 10 20: 41.7 (#128)
- Command R+: 37.3 (#214)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| LMArena Longer Query | 1370 | 1231 |

## Writing & Preference

- Amazon Nova Experimental Chat 10 20: 56.9 (#131)
- Command R+: 43.7 (#223)

| Benchmark | Amazon Nova Experimental Chat 10 20 | Command R+ |
|---|---|---|
| LMArena Text | 1394 | 1229 |
| LMArena Creative Writing | 1318 | 1235 |
| LMArena Multi-Turn | 1364 | 1213 |
| LiveBench Language | — | 29.7% |

## FAQ

### Is Amazon Nova Experimental Chat 10 20 better than Command R+?

Amazon Nova Experimental Chat 10 20 is the stronger model overall, scoring 41.5 to 32.0 on the Noometry Index.

### Is Amazon Nova Experimental Chat 10 20 or Command R+ better for coding?

Amazon Nova Experimental Chat 10 20 scores higher on coding benchmarks: 41.0 versus 28.6 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 20 and Command R+ share?

17 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and Command R+ has 34.