Model comparison
Grok 4.20 Multi-Agent vs MiMo-V2-Omni
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 43.6 on the Noometry Index. MiMo-V2-Omni costs 8.9× 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 5 categories and MiMo-V2-Omni in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 29.7.
- MiMo-V2-Omni is cheaper at $0.14 / $0.28 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
- Grok 4.20 Multi-Agent accepts more context: 1M tokens versus 262K.
Side by side
| Grok 4.20 Multi-Agent | MiMo-V2-Omni | |
|---|---|---|
| Provider | xAI | Xiaomi |
| Noometry Index | 46.2 | 43.6 |
| Released | 2026-03-09 | 2026-03-18 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 262K |
| Max output | 30K | 131K |
| Input $ / M tokens | $1.25 | $0.14 |
| Output $ / M tokens | $2.50 | $0.28 |
| Results tracked | 20 | 18 |
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Category by category
Coding Too close to call
Grok 4.20 Multi-Agent: 43.0 (#92), MiMo-V2-Omni: 43.3 (#89)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Coding | 1457 | 1466 |
Agentic & Tool Use Not comparable
Grok 4.20 Multi-Agent: —, MiMo-V2-Omni: —
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Search | 1204 | — |
Reasoning Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.9 (#48), MiMo-V2-Omni: 29.7 (#88)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Hard Prompts | 1448 | 1445 |
| NYT Connections (extended) | 89.6% | — |
Math Too close to call
Grok 4.20 Multi-Agent: 39.4 (#104), MiMo-V2-Omni: 39.1 (#115)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Math | 1442 | 1430 |
Knowledge Too close to call
Grok 4.20 Multi-Agent: 40.4 (#119), MiMo-V2-Omni: 40.5 (#118)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Expert | 1445 | 1449 |
Multimodal Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 40.5 (#48), MiMo-V2-Omni: 38.6 (#63)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Vision | 1259 | 1228 |
Multilingual Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 54.4 (#43), MiMo-V2-Omni: 51.8 (#102)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Non-English | 1440 | 1404 |
| LMArena Chinese | 1475 | 1465 |
| LMArena French | 1466 | 1447 |
| LMArena German | 1456 | 1399 |
| LMArena Japanese | 1405 | 1317 |
| LMArena Korean | 1416 | 1355 |
| LMArena Russian | 1457 | 1412 |
| LMArena Spanish | 1447 | 1434 |
Instruction Following Too close to call
Grok 4.20 Multi-Agent: 74.8 (#84), MiMo-V2-Omni: 75.2 (#66)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Instruction Following | 1420 | 1428 |
Long Context Too close to call
Grok 4.20 Multi-Agent: 43.7 (#88), MiMo-V2-Omni: 44.1 (#76)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Longer Query | 1431 | 1442 |
Writing & Preference Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 64.0 (#59), MiMo-V2-Omni: 61.4 (#87)
| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Text | 1450 | 1423 |
| LMArena Creative Writing | 1436 | 1392 |
| LMArena Multi-Turn | 1452 | 1445 |
Frequently asked questions
Is Grok 4.20 Multi-Agent better than MiMo-V2-Omni?
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 43.6 on the Noometry Index. MiMo-V2-Omni costs 8.9× 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-Omni?
MiMo-V2-Omni is cheaper. It lists at $0.14 per million input tokens and $0.28 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-Omni better for coding?
They score almost the same on coding (43.0 vs 43.3); test both on your own repository before choosing.
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 MiMo-V2-Omni share?
18 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and MiMo-V2-Omni has 18.