# Codestral vs Grok 4.1 Fast

> Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 30.1 on the Noometry Index.

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

## Summary

- They share 1 benchmark with published results for both. Codestral scores higher in 0 categories and Grok 4.1 Fast in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 42.3 to 19.1.
- Grok 4.1 Fast is cheaper at $0.20 / $0.50 per million input/output tokens, against $0.30 / $0.90 for Codestral.
- Codestral accepts more context: 256K tokens versus 128K.
- Codestral has downloadable open weights; the other is API-only.

## Snapshot

| | Codestral | Grok 4.1 Fast |
|---|---|---|
| Provider | Mistral AI | xAI |
| Noometry Index | 30.1 | 40.9 |
| Rank | 287 | 131 |
| Context | 256K | 128K |
| Input $/M | $0.30 | $0.20 |
| Output $/M | $0.90 | $0.50 |
| Weights | Open | Proprietary |

## Coding

- Codestral: 26.9 (#316)
- Grok 4.1 Fast: 33.8 (#236)

| Benchmark | Codestral | Grok 4.1 Fast |
|---|---|---|
| ALE-Bench | 137.78 | 394.93 |
| Aider Polyglot | 11.1% | — |
| LMArena WebDev | — | 1241 |
| BigCodeBench Instruct | 41.8% | — |
| LMArena Coding | — | 1411 |
| BigCodeBench Complete | 52.5% | — |
| HumanEval+ | 73.8% | — |
| MBPP+ | 61.9% | — |

## Agentic & Tool Use

- Codestral: —
- Grok 4.1 Fast: 36.1 (#35)

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

## Reasoning

- Codestral: 19.1 (#244)
- Grok 4.1 Fast: 42.3 (#45)

| Benchmark | Codestral | Grok 4.1 Fast |
|---|---|---|
| SimpleBench | — | 56% |
| Kagi LLM Benchmark | 32.5% | — |
| NYT Connections (extended) | — | 87.4% |
| LMArena Hard Prompts | — | 1407 |
| DTBench | — | 87.7% |
| ForecastBench | — | 61 |

## Math

- Codestral: —
- Grok 4.1 Fast: 30.9 (#201)

| Benchmark | Codestral | Grok 4.1 Fast |
|---|---|---|
| MathArena Final-Answer Competitions | — | 60.9% |
| ProofBench | — | 4% |
| LMArena Math | — | 1408 |

## Knowledge

- Codestral: —
- Grok 4.1 Fast: 32.6 (#203)

| Benchmark | Codestral | Grok 4.1 Fast |
|---|---|---|
| Vectara Hallucination Rate | — | 17.8% |
| LMArena Expert | — | 1398 |

## Multimodal

- Codestral: —
- Grok 4.1 Fast: 36.3 (#71)

| Benchmark | Codestral | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | — | 1201 |

## Multilingual

- Codestral: —
- Grok 4.1 Fast: 51.1 (#110)

| Benchmark | Codestral | Grok 4.1 Fast |
|---|---|---|
| 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

- Codestral: —
- Grok 4.1 Fast: 72.8 (#127)

| Benchmark | Codestral | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | — | 1376 |

## Long Context

- Codestral: —
- Grok 4.1 Fast: 42.4 (#121)

| Benchmark | Codestral | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | — | 1390 |

## Writing & Preference

- Codestral: —
- Grok 4.1 Fast: 57.4 (#126)

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

## FAQ

### Is Codestral better than Grok 4.1 Fast?

Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 30.1 on the Noometry Index.

### Which is cheaper, Codestral or Grok 4.1 Fast?

Grok 4.1 Fast is cheaper. It lists at $0.20 per million input tokens and $0.50 per million output tokens; Codestral lists at $0.30 and $0.90.

### Is Codestral or Grok 4.1 Fast better for coding?

Grok 4.1 Fast scores higher on coding benchmarks: 33.8 versus 26.9 in the Noometry coding category.

### Which has the bigger context window?

Codestral does, with 256K tokens against 128K.

### How many benchmarks do Codestral and Grok 4.1 Fast share?

1 benchmark has published results for both models. Codestral has 7 scored results on Noometry and Grok 4.1 Fast has 32.