Noometry

Model comparison

Gemini 3.1 Pro Preview vs MiMo-V2.6-Flash

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 48.5 on the Noometry Index. MiMo-V2.6-Flash costs 26× 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.

Gemini 3.1 Pro Preview Google

56.7

Rank #23 Confirmed

MiMo-V2.6-Flash Xiaomi

48.5

Rank #55 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 7 categories and MiMo-V2.6-Flash in 2 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 36.5.
  • The biggest single-benchmark swing is ProofBench: 26% for Gemini 3.1 Pro Preview and 63% for MiMo-V2.6-Flash.
  • MiMo-V2.6-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
  • MiMo-V2.6-Flash has downloadable open weights; the other is API-only.

Side by side

Gemini 3.1 Pro PreviewMiMo-V2.6-Flash
ProviderGoogleXiaomi
Noometry Index56.748.5
Released2026-02-192026-09-21
WeightsProprietaryOpen
Context window1.05M1.05M
Max output66K131K
Input $ / M tokens$2$0.14
Output $ / M tokens$12$0.28
Results tracked7119

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Category by category

Coding MiMo-V2.6-Flash leads

Gemini 3.1 Pro Preview: 42.5 (#99), MiMo-V2.6-Flash: 53.4 (#30)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
LMArena WebDev14471637
SciCode58.9%51.3%
LMArena Coding14841504
SWE-bench Verified75.6%—
DeepSWE11.7%—
GSO22.6%—
WeirdML72.1%—
MirrorCode8.9%—
ALE-Bench1,161—
AlgoTune2.02—

Agentic & Tool Use Not comparable

Gemini 3.1 Pro Preview: 37.7 (#34), MiMo-V2.6-Flash: —

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
Terminal-Bench80.2%—
APEX-Agents35.3%—
τ²-bench Banking26%—
DeepResearch Bench47.8%—
PostTrainBench22%—
BALROG57%—
ExploitBench26.1%—
GBAEval0.8%—
GDP.pdf17%—
LMArena Search1211—
METR Time Horizons77%—
Vending-Bench 23,774—

Reasoning Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 71.7 (#12), MiMo-V2.6-Flash: 36.5 (#66)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
CritPt17.7%12%
LMArena Hard Prompts14851482
ARC-AGI-277.1%—
SimpleBench79.6%—
NYT Connections (extended)97.4%—
ARC-AGI-198%—
Chess Puzzles55%—
EnigmaEval36.8%—
Thematic Generalization79.4%—
EBR-Bench14.3%—
Mystery Game Puzzles34%—
DTBench97.1%—
LMCA53.8%—
Epoch Capabilities Index154.77—
ForecastBench59—

Math Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 62.1 (#34), MiMo-V2.6-Flash: 51.9 (#52)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
ProofBench26%63%
LMArena Math14851468
FrontierMath (Tiers 1-3)59.6%—
FrontierMath Tier 426.8%—
MathArena Final-Answer Competitions86.5%—
OTIS Mock AIME 2024-202595.6%—
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-Flash: 42.2 (#99)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
LMArena Expert14851501
GPQA Diamond94.4%—
Humanity's Last Exam46.4%—
SimpleQA Verified73.5%—
Vectara Hallucination Rate10.4%—

Multimodal MiMo-V2.6-Flash leads

Gemini 3.1 Pro Preview: 37.9 (#69), MiMo-V2.6-Flash: 40.5 (#47)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
LMArena Vision12961259
Blueprint-Bench 226.5%—
Furniture Assembly26.7%—
LMArena Document1444—

Multilingual Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 57.0 (#12), MiMo-V2.6-Flash: 54.0 (#51)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
LMArena Non-English14771434
LMArena Chinese15291511
LMArena French14871475
LMArena Russian14981409
LMArena Spanish14791456
LMArena German1491—
LMArena Japanese1493—
LMArena Korean1455—

Instruction Following Too close to call

Gemini 3.1 Pro Preview: 77.0 (#32), MiMo-V2.6-Flash: 76.8 (#35)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
LMArena Instruction Following14661463

Long Context Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 47.4 (#18), MiMo-V2.6-Flash: 44.8 (#57)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
LMArena Longer Query14831463
CL-bench20.8%—
CL-bench Life16.9%—

Writing & Preference Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 66.1 (#37), MiMo-V2.6-Flash: 63.1 (#67)

BenchmarkGemini 3.1 Pro PreviewMiMo-V2.6-Flash
LMArena Text14811455
LMArena Creative Writing14821400
LMArena Multi-Turn14881451
EQ-Bench Creative Writing1491—
EQ-Bench 41142—

Frequently asked questions

Is Gemini 3.1 Pro Preview better than MiMo-V2.6-Flash?

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 48.5 on the Noometry Index. MiMo-V2.6-Flash costs 26× 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-Flash?

MiMo-V2.6-Flash is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.

Is Gemini 3.1 Pro Preview or MiMo-V2.6-Flash better for coding?

MiMo-V2.6-Flash scores higher on coding benchmarks: 53.4 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-Flash share?

19 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and MiMo-V2.6-Flash has 19.

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