Model comparison
Gemini 3.1 Pro Preview vs MiMo-V2.6-Pro
Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 50.3 on the Noometry Index. MiMo-V2.6-Pro costs 8.3× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.
Last verified . 19 shared benchmarks.
GoogleSummary
- They share 19 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 6 categories and MiMo-V2.6-Pro in 4 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 43.1.
- The biggest single-benchmark swing is ProofBench: 26% for Gemini 3.1 Pro Preview and 70% for MiMo-V2.6-Pro.
- MiMo-V2.6-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
- MiMo-V2.6-Pro has downloadable open weights; the other is API-only.
Side by side
| Gemini 3.1 Pro Preview | MiMo-V2.6-Pro | |
|---|---|---|
| Provider | Xiaomi | |
| Noometry Index | 56.7 | 50.3 |
| Released | 2026-02-19 | 2026-09-21 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 1.05M |
| Max output | 66K | 131K |
| Input $ / M tokens | $2 | $0.43 |
| Output $ / M tokens | $12 | $0.87 |
| Results tracked | 71 | 19 |
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Category by category
Coding MiMo-V2.6-Pro leads
Gemini 3.1 Pro Preview: 42.5 (#99), MiMo-V2.6-Pro: 55.5 (#23)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena WebDev | 1447 | 1629 |
| SciCode | 58.9% | 60.9% |
| LMArena Coding | 1484 | 1534 |
| ALE-Bench | 1,161 | 1,158 |
| SWE-bench Verified | 75.6% | — |
| DeepSWE | 11.7% | — |
| GSO | 22.6% | — |
| WeirdML | 72.1% | — |
| MirrorCode | 8.9% | — |
| AlgoTune | 2.02 | — |
Agentic & Tool Use Too close to call
Gemini 3.1 Pro Preview: 37.7 (#34), MiMo-V2.6-Pro: 37.5 (#35)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| APEX-Agents | 35.3% | 59.5% |
| Terminal-Bench | 80.2% | — |
| τ²-bench Banking | 26% | — |
| DeepResearch Bench | 47.8% | — |
| PostTrainBench | 22% | — |
| BALROG | 57% | — |
| ExploitBench | 26.1% | — |
| GBAEval | 0.8% | — |
| GDP.pdf | 17% | — |
| LMArena Search | 1211 | — |
| METR Time Horizons | 77% | — |
| Vending-Bench 2 | 3,774 | — |
Reasoning Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 71.7 (#12), MiMo-V2.6-Pro: 43.1 (#50)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| CritPt | 17.7% | 26.6% |
| LMArena Hard Prompts | 1485 | 1512 |
| ARC-AGI-2 | 77.1% | — |
| SimpleBench | 79.6% | — |
| NYT Connections (extended) | 97.4% | — |
| ARC-AGI-1 | 98% | — |
| Chess Puzzles | 55% | — |
| EnigmaEval | 36.8% | — |
| Thematic Generalization | 79.4% | — |
| EBR-Bench | 14.3% | — |
| Mystery Game Puzzles | 34% | — |
| DTBench | 97.1% | — |
| LMCA | 53.8% | — |
| Epoch Capabilities Index | 154.77 | — |
| ForecastBench | 59 | — |
Math Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 62.1 (#34), MiMo-V2.6-Pro: 54.5 (#45)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| ProofBench | 26% | 70% |
| LMArena Math | 1485 | 1494 |
| FrontierMath (Tiers 1-3) | 59.6% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 86.5% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| FrontierMath (Feb 2025 set) | 36.9% | — |
| FrontierMath Tier 4 (v1) | 16.7% | — |
Knowledge Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 71.8 (#3), MiMo-V2.6-Pro: 43.5 (#92)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Expert | 1485 | 1543 |
| GPQA Diamond | 94.4% | — |
| Humanity's Last Exam | 46.4% | — |
| SimpleQA Verified | 73.5% | — |
| Vectara Hallucination Rate | 10.4% | — |
Multimodal MiMo-V2.6-Pro leads
Gemini 3.1 Pro Preview: 37.9 (#69), MiMo-V2.6-Pro: 40.8 (#43)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Vision | 1296 | 1264 |
| Blueprint-Bench 2 | 26.5% | — |
| Furniture Assembly | 26.7% | — |
| LMArena Document | 1444 | — |
Multilingual Too close to call
Gemini 3.1 Pro Preview: 57.0 (#12), MiMo-V2.6-Pro: 56.9 (#14)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Non-English | 1477 | 1474 |
| LMArena Chinese | 1529 | 1529 |
| LMArena Russian | 1498 | 1480 |
| LMArena French | 1487 | — |
| LMArena German | 1491 | — |
| LMArena Japanese | 1493 | — |
| LMArena Korean | 1455 | — |
| LMArena Spanish | 1479 | — |
Instruction Following MiMo-V2.6-Pro leads
Gemini 3.1 Pro Preview: 77.0 (#32), MiMo-V2.6-Pro: 78.2 (#12)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Instruction Following | 1466 | 1493 |
Long Context Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 47.4 (#18), MiMo-V2.6-Pro: 46.0 (#27)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Longer Query | 1483 | 1501 |
| CL-bench | 20.8% | — |
| CL-bench Life | 16.9% | — |
Writing & Preference Too close to call
Gemini 3.1 Pro Preview: 66.1 (#37), MiMo-V2.6-Pro: 66.8 (#33)
| Benchmark | Gemini 3.1 Pro Preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Text | 1481 | 1492 |
| LMArena Creative Writing | 1482 | 1468 |
| LMArena Multi-Turn | 1488 | 1464 |
| EQ-Bench Creative Writing | 1491 | — |
| EQ-Bench 4 | 1142 | — |
Frequently asked questions
Is Gemini 3.1 Pro Preview better than MiMo-V2.6-Pro?
Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 50.3 on the Noometry Index. MiMo-V2.6-Pro costs 8.3× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.
Which is cheaper, Gemini 3.1 Pro Preview 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; Gemini 3.1 Pro Preview lists at $2 and $12.
Is Gemini 3.1 Pro Preview or MiMo-V2.6-Pro better for coding?
MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 42.5 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do Gemini 3.1 Pro Preview and MiMo-V2.6-Pro share?
19 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and MiMo-V2.6-Pro has 19.