Model comparison
Grok 4.1 Fast vs Magistral Small
Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 30.2 on the Noometry Index.
Last verified . 1 shared benchmarks.
Mistral AISummary
- They share 1 benchmark with published results for both. Grok 4.1 Fast scores higher in 3 categories and Magistral Small in 1 category; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 6.8.
- The biggest single-benchmark swing is DTBench: 87.7% for Grok 4.1 Fast and 61.3% for Magistral Small.
- Grok 4.1 Fast is cheaper at $0.20 / $0.50 per million input/output tokens, against $0.50 / $1.50 for Magistral Small.
- Magistral Small has downloadable open weights; the other is API-only.
Side by side
| Grok 4.1 Fast | Magistral Small | |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 41.4 | 30.2 |
| Released | 2025-06-27 | 2025-06-10 |
| Weights | Proprietary | Open |
| Context window | 128K | 128K |
| Max output | 30K | 40K |
| Input $ / M tokens | $0.20 | $0.50 |
| Output $ / M tokens | $0.50 | $1.50 |
| Results tracked | 32 | 10 |
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Category by category
Coding Magistral Small leads
Grok 4.1 Fast: 34.1 (#245), Magistral Small: 38.4 (#176)
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| LMArena WebDev | 1242 | — |
| SciCode | — | 35.2% |
| LMArena Coding | 1411 | — |
| ALE-Bench | 394.93 | — |
Agentic & Tool Use Not comparable
Grok 4.1 Fast: 36.3 (#39), Magistral Small: —
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| Berkeley Function Calling Leaderboard | 69.6% | — |
| τ²-bench Banking | 13.1% | — |
| LMArena Search | 1171 | — |
| Vending-Bench 2 | 1,107 | — |
Reasoning Grok 4.1 Fast leads
Grok 4.1 Fast: 43.4 (#49), Magistral Small: 6.8 (#350)
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| DTBench | 87.7% | 61.3% |
| ARC-AGI-2 | — | 0% |
| SimpleBench | 56% | — |
| Kagi LLM Benchmark | — | 6.3% |
| NYT Connections (extended) | 87.4% | — |
| ARC-AGI-1 | — | 5% |
| CritPt | — | 0.3% |
| Chess Puzzles | — | 3% |
| LMArena Hard Prompts | 1407 | — |
| Epoch Capabilities Index | — | 133.19 |
| ForecastBench | 61 | — |
Math Grok 4.1 Fast leads
Grok 4.1 Fast: 31.9 (#221), Magistral Small: 26.2 (#261)
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| MathArena Final-Answer Competitions | 60.9% | — |
| OTIS Mock AIME 2024-2025 | — | 30% |
| ProofBench | 4% | — |
| LMArena Math | 1408 | — |
Knowledge Grok 4.1 Fast leads
Grok 4.1 Fast: 33.1 (#207), Magistral Small: 30.9 (#223)
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| GPQA Diamond | — | 56.1% |
| Vectara Hallucination Rate | 17.8% | — |
| LMArena Expert | 1399 | — |
Multimodal Not comparable
Grok 4.1 Fast: 37.0 (#76), Magistral Small: —
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| LMArena Vision | 1201 | — |
Multilingual Not comparable
Grok 4.1 Fast: 51.0 (#114), Magistral Small: —
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| LMArena Non-English | 1391 | — |
| LMArena Chinese | 1441 | — |
| LMArena French | 1415 | — |
| LMArena German | 1404 | — |
| LMArena Japanese | 1349 | — |
| LMArena Korean | 1361 | — |
| LMArena Russian | 1387 | — |
| LMArena Spanish | 1413 | — |
Instruction Following Not comparable
Grok 4.1 Fast: 72.7 (#133), Magistral Small: —
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| LMArena Instruction Following | 1376 | — |
Long Context Not comparable
Grok 4.1 Fast: 42.4 (#126), Magistral Small: —
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| LMArena Longer Query | 1390 | — |
Writing & Preference Not comparable
Grok 4.1 Fast: 57.2 (#131), Magistral Small: —
| Benchmark | Grok 4.1 Fast | Magistral Small |
|---|---|---|
| LMArena Text | 1408 | — |
| LMArena Creative Writing | 1394 | — |
| EQ-Bench Creative Writing | 1327 | — |
| LMArena Multi-Turn | 1389 | — |
Frequently asked questions
Is Grok 4.1 Fast better than Magistral Small?
Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 30.2 on the Noometry Index.
Which is cheaper, Grok 4.1 Fast or Magistral Small?
Grok 4.1 Fast is cheaper. It lists at $0.20 per million input tokens and $0.50 per million output tokens; Magistral Small lists at $0.50 and $1.50.
Is Grok 4.1 Fast or Magistral Small better for coding?
Magistral Small scores higher on coding benchmarks: 38.4 versus 34.1 in the Noometry coding category.
Which has the bigger context window?
Both accept 128K tokens.
How many benchmarks do Grok 4.1 Fast and Magistral Small share?
1 benchmark has published results for both models. Grok 4.1 Fast has 32 scored results on Noometry and Magistral Small has 10.