Model comparison
Grok 4.3 vs MiMo-V2.6-Pro
MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 43.8 on the Noometry Index.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. Grok 4.3 scores higher in 1 category and MiMo-V2.6-Pro in 9 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in coding, where MiMo-V2.6-Pro leads 55.5 to 41.6.
- The biggest single-benchmark swing is ProofBench: 11% for Grok 4.3 and 70% for MiMo-V2.6-Pro.
- MiMo-V2.6-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $1.25 / $2.50 for Grok 4.3.
- MiMo-V2.6-Pro accepts more context: 1.05M tokens versus 1M.
- MiMo-V2.6-Pro has downloadable open weights; the other is API-only.
Side by side
| Grok 4.3 | MiMo-V2.6-Pro | |
|---|---|---|
| Provider | xAI | Xiaomi |
| Noometry Index | 43.8 | 50.3 |
| Released | 2026-04-17 | 2026-09-21 |
| Weights | Proprietary | Open |
| 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 | 40 | 19 |
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Category by category
Coding MiMo-V2.6-Pro leads
Grok 4.3: 41.6 (#121), MiMo-V2.6-Pro: 55.5 (#23)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena WebDev | 1357 | 1629 |
| SciCode | 47.3% | 60.9% |
| LMArena Coding | 1415 | 1534 |
| ALE-Bench | 944.17 | 1,158 |
| WeirdML | 49.9% | — |
Agentic & Tool Use MiMo-V2.6-Pro leads
Grok 4.3: 27.7 (#99), MiMo-V2.6-Pro: 37.5 (#35)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| APEX-Agents | — | 59.5% |
| GDP.pdf | 8% | — |
| LMArena Search | 1165 | — |
| Vending-Bench 2 | 35.26 | — |
Reasoning MiMo-V2.6-Pro leads
Grok 4.3: 35.9 (#68), MiMo-V2.6-Pro: 43.1 (#50)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| CritPt | 8% | 26.6% |
| LMArena Hard Prompts | 1396 | 1512 |
| NYT Connections (extended) | 55.2% | — |
| Chess Puzzles | 25% | — |
| DTBench | 90.7% | — |
| LMCA | 38.3% | — |
| Epoch Capabilities Index | 149.16 | — |
| ForecastBench | 60.3 | — |
Math MiMo-V2.6-Pro leads
Grok 4.3: 46.0 (#74), MiMo-V2.6-Pro: 54.5 (#45)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| ProofBench | 11% | 70% |
| LMArena Math | 1388 | 1494 |
| FrontierMath (Tiers 1-3) | 42.8% | — |
| FrontierMath Tier 4 | 14.6% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
Knowledge Grok 4.3 leads
Grok 4.3: 52.5 (#62), MiMo-V2.6-Pro: 43.5 (#92)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Expert | 1385 | 1543 |
| GPQA Diamond | 88.8% | — |
| SimpleQA Verified | 33.2% | — |
Multimodal MiMo-V2.6-Pro leads
Grok 4.3: 31.6 (#104), MiMo-V2.6-Pro: 40.8 (#43)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Vision | 1229 | 1264 |
| Blueprint-Bench 2 | 0% | — |
Multilingual MiMo-V2.6-Pro leads
Grok 4.3: 50.5 (#120), MiMo-V2.6-Pro: 56.9 (#14)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Non-English | 1385 | 1474 |
| LMArena Chinese | 1422 | 1529 |
| LMArena Russian | 1399 | 1480 |
| LMArena French | 1412 | — |
| LMArena German | 1395 | — |
| LMArena Japanese | 1379 | — |
| LMArena Korean | 1356 | — |
| LMArena Spanish | 1398 | — |
Instruction Following MiMo-V2.6-Pro leads
Grok 4.3: 72.1 (#140), MiMo-V2.6-Pro: 78.2 (#12)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Instruction Following | 1366 | 1493 |
Long Context MiMo-V2.6-Pro leads
Grok 4.3: 42.5 (#123), MiMo-V2.6-Pro: 46.0 (#27)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Longer Query | 1393 | 1501 |
Writing & Preference MiMo-V2.6-Pro leads
Grok 4.3: 58.5 (#118), MiMo-V2.6-Pro: 66.8 (#33)
| Benchmark | Grok 4.3 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Text | 1397 | 1492 |
| LMArena Creative Writing | 1380 | 1468 |
| LMArena Multi-Turn | 1406 | 1464 |
| EQ-Bench 4 | 1075 | — |
Frequently asked questions
Is Grok 4.3 better than MiMo-V2.6-Pro?
MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 43.8 on the Noometry Index.
Which is cheaper, Grok 4.3 or MiMo-V2.6-Pro?
MiMo-V2.6-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; Grok 4.3 lists at $1.25 and $2.50.
Is Grok 4.3 or MiMo-V2.6-Pro better for coding?
MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 41.6 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.6-Pro does, with 1.05M tokens against 1M.
How many benchmarks do Grok 4.3 and MiMo-V2.6-Pro share?
18 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and MiMo-V2.6-Pro has 19.