Noometry

Model comparison

Gemini 3.8 Flash vs Step 3

Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 40.5 on the Noometry Index.

Last verified . 16 shared benchmarks.

Gemini 3.8 Flash Google

61.8

Rank #11 Confirmed

Step 3 StepFun

40.5

Rank #149 Confirmed

Summary

  • They share 16 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 9 categories and Step 3 in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Gemini 3.8 Flash leads 76.9 to 28.4.
  • Step 3 has downloadable open weights; the other is API-only.

Side by side

Gemini 3.8 FlashStep 3
ProviderGoogleStepFun
Noometry Index61.840.5
Released2026-09-02—
WeightsProprietaryOpen
Context window1.05M—
Max output66K—
Input $ / M tokens$0.75—
Output $ / M tokens$3.75—
Results tracked5017

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Category by category

Coding Gemini 3.8 Flash leads

Gemini 3.8 Flash: 59.2 (#15), Step 3: 40.1 (#147)

BenchmarkGemini 3.8 FlashStep 3
LMArena Coding15101367
DeepSWE73.8%—
FrontierCode41.2%—
CursorBench39.6%—
LMArena WebDev1584—
FrontierSWE19.6%—
SciCode56.6%—
WeirdML84.8%—
ALE-Bench1,270—

Agentic & Tool Use Not comparable

Gemini 3.8 Flash: 41.8 (#21), Step 3: —

BenchmarkGemini 3.8 FlashStep 3
APEX-Agents64.3%—
Remote Labor Index5.8%—
GDP.pdf23.4%—
Vending-Bench 25,094—

Reasoning Gemini 3.8 Flash leads

Gemini 3.8 Flash: 76.9 (#5), Step 3: 28.4 (#105)

BenchmarkGemini 3.8 FlashStep 3
LMArena Hard Prompts15081355
ARC-AGI-289.2%—
Kagi LLM Benchmark—62.3%
NYT Connections (extended)97.4%—
ARC-AGI-198.5%—
CritPt18.3%—
Chess Puzzles61%—
Mystery Game Puzzles47%—
DTBench95.7%—
LMCA52.9%—
Surface Evolver Bench76.9%—
Epoch Capabilities Index156.71—

Math Gemini 3.8 Flash leads

Gemini 3.8 Flash: 65.3 (#28), Step 3: 37.6 (#148)

BenchmarkGemini 3.8 FlashStep 3
LMArena Math15281366
FrontierMath (Tiers 1-3)68.4%—
FrontierMath Tier 422%—
OTIS Mock AIME 2024-202598.9%—
ProofBench48%—

Knowledge Gemini 3.8 Flash leads

Gemini 3.8 Flash: 74.8 (#2), Step 3: 36.8 (#164)

BenchmarkGemini 3.8 FlashStep 3
LMArena Expert15241333
GPQA Diamond95.4%—
Humanity's Last Exam44.5%—
SimpleQA Verified69.7%—

Multimodal Gemini 3.8 Flash leads

Gemini 3.8 Flash: 40.7 (#45), Step 3: 35.5 (#86)

BenchmarkGemini 3.8 FlashStep 3
LMArena Vision13141177
Blueprint-Bench 238.6%—
Furniture Assembly31.7%—

Multilingual Gemini 3.8 Flash leads

Gemini 3.8 Flash: 58.0 (#5), Step 3: 46.3 (#159)

BenchmarkGemini 3.8 FlashStep 3
LMArena Non-English14911327
LMArena Chinese15541397
LMArena German14931371
LMArena Korean14591269
LMArena Russian15151331
LMArena Spanish14851371
LMArena French1498—
LMArena Japanese1502—

Instruction Following Gemini 3.8 Flash leads

Gemini 3.8 Flash: 78.0 (#13), Step 3: 70.4 (#164)

BenchmarkGemini 3.8 FlashStep 3
LMArena Instruction Following14901332

Long Context Gemini 3.8 Flash leads

Gemini 3.8 Flash: 46.3 (#24), Step 3: 40.3 (#157)

BenchmarkGemini 3.8 FlashStep 3
LMArena Longer Query15081326

Writing & Preference Gemini 3.8 Flash leads

Gemini 3.8 Flash: 72.2 (#15), Step 3: 54.3 (#151)

BenchmarkGemini 3.8 FlashStep 3
LMArena Text14991350
LMArena Creative Writing14921321
LMArena Multi-Turn15011341
EQ-Bench Creative Writing1748—

Frequently asked questions

Is Gemini 3.8 Flash better than Step 3?

Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 40.5 on the Noometry Index.

Is Gemini 3.8 Flash or Step 3 better for coding?

Gemini 3.8 Flash scores higher on coding benchmarks: 59.2 versus 40.1 in the Noometry coding category.

How many benchmarks do Gemini 3.8 Flash and Step 3 share?

16 benchmarks have published results for both models. Gemini 3.8 Flash has 50 scored results on Noometry and Step 3 has 17.

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