Model comparison
Grok 4.20 Multi-Agent vs Mistral Medium 3.5
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 40.2 on the Noometry Index.
Last verified . 18 shared benchmarks.
Mistral AISummary
- They share 18 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 9 categories and Mistral Medium 3.5 in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 17.3.
- The biggest single-benchmark swing is NYT Connections (extended): 89.6% for Grok 4.20 Multi-Agent and 12.9% for Mistral Medium 3.5.
- Grok 4.20 Multi-Agent is cheaper at $1.25 / $2.50 per million input/output tokens, against $1.50 / $7.50 for Mistral Medium 3.5.
- Grok 4.20 Multi-Agent accepts more context: 1M tokens versus 262K.
- Mistral Medium 3.5 has downloadable open weights; the other is API-only.
Side by side
| Grok 4.20 Multi-Agent | Mistral Medium 3.5 | |
|---|---|---|
| Provider | xAI | Mistral AI |
| Noometry Index | 46.2 | 40.2 |
| Released | 2026-03-09 | — |
| Weights | Proprietary | Open |
| Context window | 1M | 262K |
| Max output | 30K | 210K |
| Input $ / M tokens | $1.25 | $1.50 |
| Output $ / M tokens | $2.50 | $7.50 |
| Results tracked | 20 | 22 |
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Category by category
Coding Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.0 (#92), Mistral Medium 3.5: 36.0 (#213)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Coding | 1457 | 1461 |
| LMArena WebDev | — | 1264 |
Agentic & Tool Use Not comparable
Grok 4.20 Multi-Agent: —, Mistral Medium 3.5: —
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Search | 1204 | — |
Reasoning Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.9 (#48), Mistral Medium 3.5: 17.3 (#295)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| NYT Connections (extended) | 89.6% | 12.9% |
| LMArena Hard Prompts | 1448 | 1436 |
| Kagi LLM Benchmark | — | 41.4% |
| Epoch Capabilities Index | — | 141.35 |
Math Too close to call
Grok 4.20 Multi-Agent: 39.4 (#104), Mistral Medium 3.5: 39.1 (#113)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Math | 1442 | 1431 |
Knowledge Too close to call
Grok 4.20 Multi-Agent: 40.4 (#119), Mistral Medium 3.5: 40.0 (#126)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Expert | 1445 | 1432 |
Multimodal Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 40.5 (#48), Mistral Medium 3.5: 38.3 (#65)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Vision | 1259 | 1223 |
Multilingual Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 54.4 (#43), Mistral Medium 3.5: 51.9 (#100)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Non-English | 1440 | 1404 |
| LMArena Chinese | 1475 | 1442 |
| LMArena French | 1466 | 1448 |
| LMArena German | 1456 | 1451 |
| LMArena Korean | 1416 | 1385 |
| LMArena Russian | 1457 | 1395 |
| LMArena Spanish | 1447 | 1409 |
| LMArena Japanese | 1405 | — |
Instruction Following Too close to call
Grok 4.20 Multi-Agent: 74.8 (#84), Mistral Medium 3.5: 74.6 (#90)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1415 |
Long Context Too close to call
Grok 4.20 Multi-Agent: 43.7 (#88), Mistral Medium 3.5: 43.2 (#103)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Longer Query | 1431 | 1415 |
Writing & Preference Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 64.0 (#59), Mistral Medium 3.5: 58.5 (#117)
| Benchmark | Grok 4.20 Multi-Agent | Mistral Medium 3.5 |
|---|---|---|
| LMArena Text | 1450 | 1421 |
| LMArena Creative Writing | 1436 | 1374 |
| LMArena Multi-Turn | 1452 | 1423 |
| EQ-Bench 4 | — | 993 |
Frequently asked questions
Is Grok 4.20 Multi-Agent better than Mistral Medium 3.5?
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 40.2 on the Noometry Index.
Which is cheaper, Grok 4.20 Multi-Agent or Mistral Medium 3.5?
Grok 4.20 Multi-Agent is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; Mistral Medium 3.5 lists at $1.50 and $7.50.
Is Grok 4.20 Multi-Agent or Mistral Medium 3.5 better for coding?
Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 36.0 in the Noometry coding category.
Which has the bigger context window?
Grok 4.20 Multi-Agent does, with 1M tokens against 262K.
How many benchmarks do Grok 4.20 Multi-Agent and Mistral Medium 3.5 share?
18 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and Mistral Medium 3.5 has 22.