# Command R+ vs Mercury 2

> Mercury 2 is the stronger model overall, scoring 38.8 to 32.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/command-r-plus-vs-mercury-2
- Last updated: 2026-10-10
- Shared benchmarks: 12

## Summary

- They share 12 benchmarks with published results for both. Command R+ scores higher in 1 category and Mercury 2 in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Mercury 2 leads 23.0 to 8.9.
- The biggest single-benchmark swing is Vectara Hallucination Rate: 6.9% for Command R+ and 12.3% for Mercury 2.
- Mercury 2 is cheaper at $0.25 / $0.75 per million input/output tokens, against $2.50 / $10 for Command R+.
- Command R+ has downloadable open weights; the other is API-only.

## Snapshot

| | Command R+ | Mercury 2 |
|---|---|---|
| Provider | Cohere | Inception |
| Noometry Index | 32.0 | 38.8 |
| Rank | 251 | 167 |
| Context | 128K | 128K |
| Input $/M | $2.50 | $0.25 |
| Output $/M | $10 | $0.75 |
| Weights | Open | Proprietary |

## Coding

- Command R+: 28.6 (#304)
- Mercury 2: 33.2 (#250)

| Benchmark | Command R+ | Mercury 2 |
|---|---|---|
| LMArena Coding | 1187 | 1391 |
| LMArena WebDev | — | 1170 |
| SciCode | — | 38.7% |
| WeirdML | — | 43.2% |
| BigCodeBench Instruct | 33.8% | — |
| LiveBench Coding | 19.1% | — |
| BigCodeBench Complete | 41.9% | — |
| ALE-Bench | — | 785.58 |
| HumanEval+ | 56.7% | — |
| MBPP+ | 63.5% | — |

## Reasoning

- Command R+: 8.9 (#341)
- Mercury 2: 23.0 (#170)

| Benchmark | Command R+ | Mercury 2 |
|---|---|---|
| LMArena Hard Prompts | 1186 | 1362 |
| SimpleBench | 17.4% | — |
| CritPt | — | 0.8% |
| LiveBench Reasoning | 24.8% | — |
| DTBench | 54.9% | — |
| LiveBench Data Analysis | 38.1% | — |
| LMCA | 5% | — |
| Epoch Capabilities Index | 119.28 | — |
| LiveBench | 31.8% | — |

## Math

- Command R+: 26.6 (#239)
- Mercury 2: —

| Benchmark | Command R+ | Mercury 2 |
|---|---|---|
| LiveBench Math | 21.3% | — |
| LMArena Math | 1188 | — |

## Knowledge

- Command R+: 35.9 (#165)
- Mercury 2: 35.6 (#170)

| Benchmark | Command R+ | Mercury 2 |
|---|---|---|
| Vectara Hallucination Rate | 6.9% | 12.3% |
| LMArena Expert | 1174 | 1358 |
| MMLU | 69.4% | — |

## Multilingual

- Command R+: 38.8 (#222)
- Mercury 2: 46.8 (#153)

| Benchmark | Command R+ | Mercury 2 |
|---|---|---|
| LMArena Non-English | 1216 | 1331 |
| LMArena Chinese | 1226 | 1416 |
| LMArena Russian | 1227 | 1303 |
| LMArena French | 1208 | — |
| LMArena German | 1216 | — |
| LMArena Japanese | 1166 | — |
| LMArena Korean | 1138 | — |
| LMArena Spanish | 1189 | — |

## Instruction Following

- Command R+: 60.2 (#249)
- Mercury 2: 70.4 (#161)

| Benchmark | Command R+ | Mercury 2 |
|---|---|---|
| LMArena Instruction Following | 1197 | 1328 |
| LiveBench Instruction Following | 57.6% | — |

## Long Context

- Command R+: 37.3 (#214)
- Mercury 2: 40.4 (#149)

| Benchmark | Command R+ | Mercury 2 |
|---|---|---|
| LMArena Longer Query | 1231 | 1329 |

## Writing & Preference

- Command R+: 43.7 (#223)
- Mercury 2: 54.0 (#151)

| Benchmark | Command R+ | Mercury 2 |
|---|---|---|
| LMArena Text | 1229 | 1355 |
| LMArena Creative Writing | 1235 | 1289 |
| LMArena Multi-Turn | 1213 | 1358 |
| LiveBench Language | 29.7% | — |

## FAQ

### Is Command R+ better than Mercury 2?

Mercury 2 is the stronger model overall, scoring 38.8 to 32.0 on the Noometry Index.

### Which is cheaper, Command R+ or Mercury 2?

Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Command R+ lists at $2.50 and $10.

### Is Command R+ or Mercury 2 better for coding?

Mercury 2 scores higher on coding benchmarks: 33.2 versus 28.6 in the Noometry coding category.

### Which has the bigger context window?

Both accept 128K tokens.

### How many benchmarks do Command R+ and Mercury 2 share?

12 benchmarks have published results for both models. Command R+ has 34 scored results on Noometry and Mercury 2 has 17.