# Grok 4.1 Fast vs Mistral Nemo

> Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 25.9 on the Noometry Index. Mistral Nemo costs 1.8× less per token, which makes it the better buy when Grok 4.1 Fast's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/grok-4-1-fast-vs-mistral-nemo
- Last updated: 2026-10-10
- Shared benchmarks: 3

## Summary

- They share 3 benchmarks with published results for both. Grok 4.1 Fast scores higher in 5 categories and Mistral Nemo in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Grok 4.1 Fast leads 57.4 to 28.6.
- The biggest single-benchmark swing is Berkeley Function Calling Leaderboard: 69.6% for Grok 4.1 Fast and 27.6% for Mistral Nemo.
- Mistral Nemo is cheaper at $0.15 / $0.15 per million input/output tokens, against $0.20 / $0.50 for Grok 4.1 Fast.
- Mistral Nemo has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 40.9 | 25.9 |
| Rank | 131 | 332 |
| Context | 128K | 128K |
| Input $/M | $0.20 | $0.15 |
| Output $/M | $0.50 | $0.15 |
| Weights | Proprietary | Open |

## Coding

- Grok 4.1 Fast: 33.8 (#236)
- Mistral Nemo: —

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| LMArena WebDev | 1241 | — |
| LMArena Coding | 1411 | — |
| ALE-Bench | 394.93 | — |

## Agentic & Tool Use

- Grok 4.1 Fast: 36.1 (#35)
- Mistral Nemo: 23.3 (#118)

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| Berkeley Function Calling Leaderboard | 69.6% | 27.6% |
| τ²-bench Banking | 13.1% | — |
| BALROG | — | 17.6% |
| LMArena Search | 1171 | — |
| Vending-Bench 2 | 1,107 | — |

## Reasoning

- Grok 4.1 Fast: 42.3 (#45)
- Mistral Nemo: 19.9 (#230)

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| DTBench | 87.7% | 48.6% |
| SimpleBench | 56% | — |
| NYT Connections (extended) | 87.4% | — |
| LMArena Hard Prompts | 1407 | — |
| Epoch Capabilities Index | — | 118.63 |
| ForecastBench | 61 | — |
| PIQA | — | 83.5% |

## Math

- Grok 4.1 Fast: 30.9 (#201)
- Mistral Nemo: 23.5 (#263)

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| MathArena Final-Answer Competitions | 60.9% | — |
| ProofBench | 4% | — |
| LMArena Math | 1408 | — |
| MATH Level 5 | — | 10.8% |
| GSM8K | — | 84.2% |

## Knowledge

- Grok 4.1 Fast: 32.6 (#203)
- Mistral Nemo: 12.3 (#293)

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| GPQA Diamond | — | 29.9% |
| Vectara Hallucination Rate | 17.8% | — |
| LMArena Expert | 1398 | — |
| BoolQ | — | 82.5% |

## Multimodal

- Grok 4.1 Fast: 36.3 (#71)
- Mistral Nemo: —

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| LMArena Vision | 1201 | — |

## Multilingual

- Grok 4.1 Fast: 51.1 (#110)
- Mistral Nemo: —

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| LMArena Non-English | 1391 | — |
| LMArena Chinese | 1441 | — |
| LMArena French | 1416 | — |
| LMArena German | 1404 | — |
| LMArena Japanese | 1347 | — |
| LMArena Korean | 1361 | — |
| LMArena Russian | 1387 | — |
| LMArena Spanish | 1411 | — |

## Instruction Following

- Grok 4.1 Fast: 72.8 (#127)
- Mistral Nemo: —

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| LMArena Instruction Following | 1376 | — |

## Long Context

- Grok 4.1 Fast: 42.4 (#121)
- Mistral Nemo: —

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| LMArena Longer Query | 1390 | — |

## Writing & Preference

- Grok 4.1 Fast: 57.4 (#126)
- Mistral Nemo: 28.6 (#291)

| Benchmark | Grok 4.1 Fast | Mistral Nemo |
|---|---|---|
| EQ-Bench Creative Writing | 1327 | 881 |
| LMArena Text | 1408 | — |
| LMArena Creative Writing | 1394 | — |
| LMArena Multi-Turn | 1389 | — |

## FAQ

### Is Grok 4.1 Fast better than Mistral Nemo?

Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 25.9 on the Noometry Index. Mistral Nemo costs 1.8× less per token, which makes it the better buy when Grok 4.1 Fast's lead doesn't matter for your workload.

### Which is cheaper, Grok 4.1 Fast or Mistral Nemo?

Mistral Nemo is cheaper. It lists at $0.15 per million input tokens and $0.15 per million output tokens; Grok 4.1 Fast lists at $0.20 and $0.50.

### Which has the bigger context window?

Both accept 128K tokens.

### How many benchmarks do Grok 4.1 Fast and Mistral Nemo share?

3 benchmarks have published results for both models. Grok 4.1 Fast has 32 scored results on Noometry and Mistral Nemo has 10.