Model comparison
Grok 4.20 Multi-Agent vs MiMo-V2-Pro
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 43.0 on the Noometry Index. MiMo-V2-Pro costs 2.9× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 4 categories and MiMo-V2-Pro in 4 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 22.1.
- The biggest single-benchmark swing is NYT Connections (extended): 89.6% for Grok 4.20 Multi-Agent and 25.8% for MiMo-V2-Pro.
- MiMo-V2-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
- MiMo-V2-Pro accepts more context: 1.05M tokens versus 1M.
Side by side
| Grok 4.20 Multi-Agent | MiMo-V2-Pro | |
|---|---|---|
| Provider | xAI | Xiaomi |
| Noometry Index | 46.2 | 43.0 |
| Released | 2026-03-09 | 2026-03-18 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 1.05M |
| Max output | 30K | 131K |
| Input $ / M tokens | $1.25 | $0.43 |
| Output $ / M tokens | $2.50 | $0.87 |
| Results tracked | 20 | 23 |
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Category by category
Coding Too close to call
Grok 4.20 Multi-Agent: 43.0 (#92), MiMo-V2-Pro: 43.8 (#83)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Coding | 1457 | 1476 |
| LMArena WebDev | — | 1433 |
| ALE-Bench | — | 785.17 |
Agentic & Tool Use Not comparable
Grok 4.20 Multi-Agent: —, MiMo-V2-Pro: —
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Search | 1204 | — |
Reasoning Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.9 (#48), MiMo-V2-Pro: 22.1 (#206)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| NYT Connections (extended) | 89.6% | 25.8% |
| LMArena Hard Prompts | 1448 | 1457 |
| Thematic Generalization | — | 45.9% |
Math Too close to call
Grok 4.20 Multi-Agent: 39.4 (#104), MiMo-V2-Pro: 39.5 (#102)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Math | 1442 | 1447 |
Knowledge MiMo-V2-Pro leads
Grok 4.20 Multi-Agent: 40.4 (#119), MiMo-V2-Pro: 41.4 (#111)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Expert | 1445 | 1478 |
Multimodal Not comparable
Grok 4.20 Multi-Agent: 40.5 (#48), MiMo-V2-Pro: —
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Vision | 1259 | — |
Multilingual Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 54.4 (#43), MiMo-V2-Pro: 52.7 (#81)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Non-English | 1440 | 1416 |
| LMArena Chinese | 1475 | 1456 |
| LMArena French | 1466 | 1469 |
| LMArena German | 1456 | 1417 |
| LMArena Japanese | 1405 | 1366 |
| LMArena Korean | 1416 | 1400 |
| LMArena Russian | 1457 | 1427 |
| LMArena Spanish | 1447 | 1457 |
Instruction Following MiMo-V2-Pro leads
Grok 4.20 Multi-Agent: 74.8 (#84), MiMo-V2-Pro: 76.0 (#49)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Instruction Following | 1420 | 1445 |
Long Context Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.7 (#88), MiMo-V2-Pro: 41.5 (#138)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Longer Query | 1431 | 1455 |
| CL-bench | — | 15.7% |
| CL-bench Life | — | 6.9% |
Writing & Preference Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 64.0 (#59), MiMo-V2-Pro: 62.8 (#70)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Pro |
|---|---|---|
| LMArena Text | 1450 | 1436 |
| LMArena Creative Writing | 1436 | 1415 |
| LMArena Multi-Turn | 1452 | 1456 |
Frequently asked questions
Is Grok 4.20 Multi-Agent better than MiMo-V2-Pro?
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 43.0 on the Noometry Index. MiMo-V2-Pro costs 2.9× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.
Which is cheaper, Grok 4.20 Multi-Agent or MiMo-V2-Pro?
MiMo-V2-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.
Is Grok 4.20 Multi-Agent or MiMo-V2-Pro better for coding?
They score almost the same on coding (43.0 vs 43.8); test both on your own repository before choosing.
Which has the bigger context window?
MiMo-V2-Pro does, with 1.05M tokens against 1M.
How many benchmarks do Grok 4.20 Multi-Agent and MiMo-V2-Pro share?
18 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and MiMo-V2-Pro has 23.