Model comparison
Codestral vs Grok 4 Fast
Grok 4 Fast is the stronger model overall, scoring 39.0 to 30.1 on the Noometry Index.
Last verified . 1 shared benchmarks.
Mistral AISummary
- They share 1 benchmark with published results for both. Codestral scores higher in 0 categories and Grok 4 Fast in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in coding, where Grok 4 Fast leads 32.3 to 26.9.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 32.5% for Codestral and 66.1% for Grok 4 Fast.
- Codestral has downloadable open weights; the other is API-only.
Side by side
| Codestral | Grok 4 Fast | |
|---|---|---|
| Provider | Mistral AI | xAI |
| Noometry Index | 30.1 | 39.0 |
| Released | 2024-05-29 | 2025-09-19 |
| Weights | Open | Proprietary |
| Context window | 256K | — |
| Max output | 4K | — |
| Input $ / M tokens | $0.30 | — |
| Output $ / M tokens | $0.90 | — |
| Results tracked | 7 | 30 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Grok 4 Fast leads
Codestral: 26.9 (#316), Grok 4 Fast: 32.3 (#264)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| Aider Polyglot | 11.1% | — |
| LMArena WebDev | — | 1160 |
| WeirdML | — | 42.9% |
| BigCodeBench Instruct | 41.8% | — |
| LMArena Coding | — | 1429 |
| BigCodeBench Complete | 52.5% | — |
| ALE-Bench | 137.78 | — |
| HumanEval+ | 73.8% | — |
| MBPP+ | 61.9% | — |
Agentic & Tool Use Not comparable
Codestral: —, Grok 4 Fast: 29.3 (#80)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| τ²-bench Banking | — | 15.7% |
| Cybench | — | 30% |
| LMArena Search | — | 1171 |
Reasoning Grok 4 Fast leads
Codestral: 19.1 (#244), Grok 4 Fast: 22.5 (#179)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| Kagi LLM Benchmark | 32.5% | 66.1% |
| ARC-AGI-2 | — | 5.3% |
| ARC-AGI-1 | — | 48.5% |
| LMArena Hard Prompts | — | 1413 |
| DTBench | — | 82.7% |
| Epoch Capabilities Index | — | 144.21 |
| ForecastBench | — | 60.5 |
Math Not comparable
Codestral: —, Grok 4 Fast: 36.1 (#126)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| LMArena Math | — | 1419 |
Knowledge Not comparable
Codestral: —, Grok 4 Fast: 31.5 (#211)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| Vectara Hallucination Rate | — | 19.7% |
| LMArena Expert | — | 1411 |
Multilingual Not comparable
Codestral: —, Grok 4 Fast: 51.5 (#106)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | — | 1397 |
| LMArena Chinese | — | 1458 |
| LMArena French | — | 1433 |
| LMArena German | — | 1383 |
| LMArena Japanese | — | 1358 |
| LMArena Korean | — | 1359 |
| LMArena Russian | — | 1387 |
| LMArena Spanish | — | 1414 |
Instruction Following Not comparable
Codestral: —, Grok 4 Fast: 73.4 (#116)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| LMArena Instruction Following | — | 1388 |
Long Context Not comparable
Codestral: —, Grok 4 Fast: 63.2 (#3)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| Fiction.LiveBench | — | 94.4% |
| LMArena Longer Query | — | 1415 |
Writing & Preference Not comparable
Codestral: —, Grok 4 Fast: 60.2 (#96)
| Benchmark | Codestral | Grok 4 Fast |
|---|---|---|
| LMArena Text | — | 1407 |
| LMArena Creative Writing | — | 1388 |
| LMArena Multi-Turn | — | 1414 |
Frequently asked questions
Is Codestral better than Grok 4 Fast?
Grok 4 Fast is the stronger model overall, scoring 39.0 to 30.1 on the Noometry Index.
Is Codestral or Grok 4 Fast better for coding?
Grok 4 Fast scores higher on coding benchmarks: 32.3 versus 26.9 in the Noometry coding category.
How many benchmarks do Codestral and Grok 4 Fast share?
1 benchmark has published results for both models. Codestral has 7 scored results on Noometry and Grok 4 Fast has 30.