Noometry

Model comparison

MiMo-V2.6-Pro vs Step 3.5 Flash

MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 42.3 on the Noometry Index. Step 3.5 Flash costs 3.6× less per token, which makes it the better buy when MiMo-V2.6-Pro's lead doesn't matter for your workload.

Last verified . 12 shared benchmarks.

MiMo-V2.6-Pro Xiaomi

50.3

Rank #49 Confirmed

Step 3.5 Flash StepFun

42.3

Rank #116 Confirmed

Summary

  • They share 12 benchmarks with published results for both. MiMo-V2.6-Pro scores higher in 8 categories and Step 3.5 Flash in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where MiMo-V2.6-Pro leads 43.1 to 22.2.
  • Step 3.5 Flash is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.43 / $0.87 for MiMo-V2.6-Pro.
  • MiMo-V2.6-Pro accepts more context: 1.05M tokens versus 256K.

Side by side

MiMo-V2.6-ProStep 3.5 Flash
ProviderXiaomiStepFun
Noometry Index50.342.3
Released2026-09-212026-01-29
WeightsOpenOpen
Context window1.05M256K
Max output131K256K
Input $ / M tokens$0.43$0.10
Output $ / M tokens$0.87$0.30
Results tracked1919

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Category by category

Coding MiMo-V2.6-Pro leads

MiMo-V2.6-Pro: 55.5 (#23), Step 3.5 Flash: 42.4 (#105)

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Coding15341436
LMArena WebDev1629—
SciCode60.9%—
ALE-Bench1,158—

Agentic & Tool Use Not comparable

MiMo-V2.6-Pro: 37.5 (#35), Step 3.5 Flash: —

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
APEX-Agents59.5%—

Reasoning MiMo-V2.6-Pro leads

MiMo-V2.6-Pro: 43.1 (#50), Step 3.5 Flash: 22.2 (#202)

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Hard Prompts15121411
NYT Connections (extended)—28.4%
CritPt26.6%—

Math MiMo-V2.6-Pro leads

MiMo-V2.6-Pro: 54.5 (#45), Step 3.5 Flash: 42.6 (#84)

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Math14941408
MathArena Final-Answer Competitions—66.8%
ProofBench70%—

Knowledge MiMo-V2.6-Pro leads

MiMo-V2.6-Pro: 43.5 (#92), Step 3.5 Flash: 39.6 (#132)

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Expert15431421

Multimodal Not comparable

MiMo-V2.6-Pro: 40.8 (#43), Step 3.5 Flash: —

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Vision1264—

Multilingual MiMo-V2.6-Pro leads

MiMo-V2.6-Pro: 56.9 (#14), Step 3.5 Flash: 50.5 (#119)

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Non-English14741385
LMArena Chinese15291447
LMArena Russian14801385
LMArena French—1421
LMArena German—1405
LMArena Japanese—1354
LMArena Korean—1352
LMArena Spanish—1419

Instruction Following MiMo-V2.6-Pro leads

MiMo-V2.6-Pro: 78.2 (#12), Step 3.5 Flash: 73.1 (#124)

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Instruction Following14931385

Long Context MiMo-V2.6-Pro leads

MiMo-V2.6-Pro: 46.0 (#27), Step 3.5 Flash: 42.8 (#117)

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Longer Query15011402

Writing & Preference MiMo-V2.6-Pro leads

MiMo-V2.6-Pro: 66.8 (#33), Step 3.5 Flash: 58.8 (#113)

BenchmarkMiMo-V2.6-ProStep 3.5 Flash
LMArena Text14921403
LMArena Creative Writing14681357
LMArena Multi-Turn14641405

Frequently asked questions

Is MiMo-V2.6-Pro better than Step 3.5 Flash?

MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 42.3 on the Noometry Index. Step 3.5 Flash costs 3.6× less per token, which makes it the better buy when MiMo-V2.6-Pro's lead doesn't matter for your workload.

Which is cheaper, MiMo-V2.6-Pro or Step 3.5 Flash?

Step 3.5 Flash is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; MiMo-V2.6-Pro lists at $0.43 and $0.87.

Is MiMo-V2.6-Pro or Step 3.5 Flash better for coding?

MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 42.4 in the Noometry coding category.

Which has the bigger context window?

MiMo-V2.6-Pro does, with 1.05M tokens against 256K.

How many benchmarks do MiMo-V2.6-Pro and Step 3.5 Flash share?

12 benchmarks have published results for both models. MiMo-V2.6-Pro has 19 scored results on Noometry and Step 3.5 Flash has 19.

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