Model comparison
Grok 4 Fast vs Mistral Large 4
Mistral Large 4 is the stronger model overall, scoring 43.1 to 39.4 on the Noometry Index.
Last verified . 13 shared benchmarks.
Mistral AISummary
- They share 13 benchmarks with published results for both. Grok 4 Fast scores higher in 1 category and Mistral Large 4 in 7 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 43.6.
Side by side
| Grok 4 Fast | Mistral Large 4 | |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 39.4 | 43.1 |
| Released | 2025-09-19 | 2026-10-06 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 262K |
| Input $ / M tokens | — | $0.68 |
| Output $ / M tokens | — | $2.09 |
| Results tracked | 30 | 15 |
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Category by category
Coding Mistral Large 4 leads
Grok 4 Fast: 32.5 (#271), Mistral Large 4: 48.6 (#57)
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| LMArena WebDev | 1159 | 1541 |
| LMArena Coding | 1429 | 1475 |
| WeirdML | 42.9% | — |
Agentic & Tool Use Not comparable
Grok 4 Fast: 29.5 (#86), Mistral Large 4: —
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| τ²-bench Banking | 15.7% | — |
| Cybench | 30% | — |
| LMArena Search | 1171 | — |
Reasoning Too close to call
Grok 4 Fast: 22.2 (#201), Mistral Large 4: 22.5 (#192)
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| LMArena Hard Prompts | 1412 | 1444 |
| ARC-AGI-2 | 5.3% | — |
| Kagi LLM Benchmark | 66.1% | — |
| NYT Connections (extended) | — | 27.4% |
| ARC-AGI-1 | 48.5% | — |
| DTBench | 82.7% | — |
| Epoch Capabilities Index | 144.2 | — |
| ForecastBench | 60.5 | — |
Math Mistral Large 4 leads
Grok 4 Fast: 38.9 (#123), Mistral Large 4: 40.4 (#91)
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| LMArena Math | 1419 | 1488 |
Knowledge Mistral Large 4 leads
Grok 4 Fast: 32.0 (#214), Mistral Large 4: 36.6 (#166)
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| LMArena Expert | 1411 | 1447 |
| SimpleQA Verified | — | 20% |
| Vectara Hallucination Rate | 19.7% | — |
Multilingual Mistral Large 4 leads
Grok 4 Fast: 51.3 (#111), Mistral Large 4: 52.6 (#82)
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| LMArena Non-English | 1396 | 1415 |
| LMArena Chinese | 1457 | 1491 |
| LMArena Russian | 1389 | 1414 |
| LMArena French | 1431 | — |
| LMArena German | 1383 | — |
| LMArena Japanese | 1352 | — |
| LMArena Korean | 1357 | — |
| LMArena Spanish | 1415 | — |
Instruction Following Mistral Large 4 leads
Grok 4 Fast: 73.2 (#121), Mistral Large 4: 75.0 (#76)
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| LMArena Instruction Following | 1387 | 1424 |
Long Context Grok 4 Fast leads
Grok 4 Fast: 63.2 (#3), Mistral Large 4: 43.6 (#89)
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| LMArena Longer Query | 1415 | 1429 |
| Fiction.LiveBench | 94.4% | — |
Writing & Preference Too close to call
Grok 4 Fast: 60.0 (#102), Mistral Large 4: 60.4 (#97)
| Benchmark | Grok 4 Fast | Mistral Large 4 |
|---|---|---|
| LMArena Text | 1407 | 1427 |
| LMArena Creative Writing | 1387 | 1361 |
| LMArena Multi-Turn | 1414 | 1424 |
Frequently asked questions
Is Grok 4 Fast better than Mistral Large 4?
Mistral Large 4 is the stronger model overall, scoring 43.1 to 39.4 on the Noometry Index.
Is Grok 4 Fast or Mistral Large 4 better for coding?
Mistral Large 4 scores higher on coding benchmarks: 48.6 versus 32.5 in the Noometry coding category.
How many benchmarks do Grok 4 Fast and Mistral Large 4 share?
13 benchmarks have published results for both models. Grok 4 Fast has 30 scored results on Noometry and Mistral Large 4 has 15.