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Google: Gemini 3.1 Pro Preview vs StepFun: Step 3.5 Flash

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Last updated at: 2026-03-06

Metric Google: Gemini 3.1 Pro Preview medium Release: 2026-02-19 StepFun: Step 3.5 Flash medium Release: 2026-02-01 Free Available
Rank #2 #13
Avg Score 9.4 7.4
Consistency 10.0 9.1
Cost per result 3.417 0.000
Total Cost $0.513 $0.000
Tests Correct
Attempt pass rate 93.8% 68.8%
Flaky tests 0 2
Total Runs 48 (16 x 3) 48 (16 x 3)
Output Tokens 1,521 71,452
Reasoning Tokens 35,656 155,147
Response Time (avg) 16.60s 29.10s
Response Time (max) 40.61s 170.45s
Response Time (total) 149.36s 290.96s

Top Models by Score

Score vs Total Cost

Response Time (avg)

Avg Score vs Response Time (avg)

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 9.52s 106 2,533
StepFun: Step 3.5 Flash 10.0 10.0 100.0% 0 18.54s 13,924 17,208
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 9.0 10.0 100.0% 0 40.61s 432 9,281
StepFun: Step 3.5 Flash 10.0 10.0 100.0% 0 29.57s 1,176 12,984
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 9.9 10.0 100.0% 0 7.72s 279 3,904
StepFun: Step 3.5 Flash 10.0 10.0 100.0% 0 15.01s 600 13,886
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 7.0 10.0 66.7% 0 32.73s 18 12,424
StepFun: Step 3.5 Flash 4.0 7.2 44.4% 1 170.45s 45,350 90,436
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 11.77s 108 1,179
StepFun: Step 3.5 Flash 6.0 10.0 0.0% 0 6.54s 2,214 2,584
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 9.56s 72 2,236
StepFun: Step 3.5 Flash 9.0 6.8 83.3% 1 4.98s 2,284 3,412
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 7.15s 232 3,117
StepFun: Step 3.5 Flash 4.0 10.0 33.3% 0 7.72s 5,629 10,835
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 23.15s 274 982
StepFun: Step 3.5 Flash 10.0 10.0 100.0% 0 11.91s 275 3,802

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