Model comparison
Grok 4.3 vs Magistral Medium
Grok 4.3 is the stronger model overall, scoring 43.8 to 35.2 on the Noometry Index.
Last verified . 19 shared benchmarks.
Mistral AISummary
- They share 19 benchmarks with published results for both. Grok 4.3 scores higher in 8 categories and Magistral Medium in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.3 leads 35.9 to 8.6.
- The biggest single-benchmark swing is SciCode: 47.3% for Grok 4.3 and 39.2% for Magistral Medium.
- Grok 4.3 is cheaper at $1.25 / $2.50 per million input/output tokens, against $2 / $5 for Magistral Medium.
- Grok 4.3 accepts more context: 1M tokens versus 262K.
- Magistral Medium has downloadable open weights; the other is API-only.
Side by side
| Grok 4.3 | Magistral Medium | |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 43.8 | 35.2 |
| Released | 2026-04-17 | 2025-03-17 |
| Weights | Proprietary | Open |
| Context window | 1M | 262K |
| Max output | 30K | 16K |
| Input $ / M tokens | $1.25 | $2 |
| Output $ / M tokens | $2.50 | $5 |
| Results tracked | 40 | 22 |
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Category by category
Coding Grok 4.3 leads
Grok 4.3: 41.6 (#121), Magistral Medium: 39.1 (#161)
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| SciCode | 47.3% | 39.2% |
| LMArena Coding | 1415 | 1319 |
| LMArena WebDev | 1357 | — |
| WeirdML | 49.9% | — |
| ALE-Bench | 944.17 | — |
Agentic & Tool Use Not comparable
Grok 4.3: 27.7 (#99), Magistral Medium: —
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| GDP.pdf | 8% | — |
| LMArena Search | 1165 | — |
| Vending-Bench 2 | 35.26 | — |
Reasoning Grok 4.3 leads
Grok 4.3: 35.9 (#68), Magistral Medium: 8.6 (#348)
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| CritPt | 8% | 0.3% |
| LMArena Hard Prompts | 1396 | 1267 |
| ARC-AGI-2 | — | 0% |
| Kagi LLM Benchmark | — | 16.2% |
| NYT Connections (extended) | 55.2% | — |
| ARC-AGI-1 | — | 6.1% |
| Chess Puzzles | 25% | — |
| DTBench | 90.7% | — |
| LMCA | 38.3% | — |
| Epoch Capabilities Index | 149.16 | — |
| ForecastBench | 60.3 | — |
Math Grok 4.3 leads
Grok 4.3: 46.0 (#74), Magistral Medium: 35.1 (#189)
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| LMArena Math | 1388 | 1250 |
| FrontierMath (Tiers 1-3) | 42.8% | — |
| FrontierMath Tier 4 | 14.6% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
| ProofBench | 11% | — |
Knowledge Grok 4.3 leads
Grok 4.3: 52.5 (#62), Magistral Medium: 33.5 (#202)
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| LMArena Expert | 1385 | 1223 |
| GPQA Diamond | 88.8% | — |
| SimpleQA Verified | 33.2% | — |
Multimodal Not comparable
Grok 4.3: 31.6 (#104), Magistral Medium: —
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| LMArena Vision | 1229 | — |
| Blueprint-Bench 2 | 0% | — |
Multilingual Grok 4.3 leads
Grok 4.3: 50.5 (#120), Magistral Medium: 39.6 (#224)
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| LMArena Non-English | 1385 | 1232 |
| LMArena Chinese | 1422 | 1227 |
| LMArena French | 1412 | 1267 |
| LMArena German | 1395 | 1248 |
| LMArena Japanese | 1379 | 1175 |
| LMArena Korean | 1356 | 1125 |
| LMArena Russian | 1399 | 1224 |
| LMArena Spanish | 1398 | 1271 |
Instruction Following Grok 4.3 leads
Grok 4.3: 72.1 (#140), Magistral Medium: 66.0 (#211)
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| LMArena Instruction Following | 1366 | 1254 |
Long Context Grok 4.3 leads
Grok 4.3: 42.5 (#123), Magistral Medium: 39.3 (#183)
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| LMArena Longer Query | 1393 | 1295 |
Writing & Preference Grok 4.3 leads
Grok 4.3: 58.5 (#118), Magistral Medium: 46.3 (#219)
| Benchmark | Grok 4.3 | Magistral Medium |
|---|---|---|
| LMArena Text | 1397 | 1255 |
| LMArena Creative Writing | 1380 | 1245 |
| LMArena Multi-Turn | 1406 | 1275 |
| EQ-Bench 4 | 1075 | — |
Frequently asked questions
Is Grok 4.3 better than Magistral Medium?
Grok 4.3 is the stronger model overall, scoring 43.8 to 35.2 on the Noometry Index.
Which is cheaper, Grok 4.3 or Magistral Medium?
Grok 4.3 is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; Magistral Medium lists at $2 and $5.
Is Grok 4.3 or Magistral Medium better for coding?
Grok 4.3 scores higher on coding benchmarks: 41.6 versus 39.1 in the Noometry coding category.
Which has the bigger context window?
Grok 4.3 does, with 1M tokens against 262K.
How many benchmarks do Grok 4.3 and Magistral Medium share?
19 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Magistral Medium has 22.