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Google: Gemini 3.5 Flash vs StepFun: Step 3.5 Flash

Summary

Gemini 3.5 Flash vs Step 3.5 Flash benchmark comparison: Gemini 3.5 Flash leads on average score with 7.0 vs 6.9. Step 3.5 Flash has the lower benchmark cost at $0.070 vs $1.079. Gemini 3.5 Flash is faster at 9.93s vs 72.53s, with pass rates of 77.8% vs 56.7%.

Recommended model: Step 3.5 Flash - Its score stays close to the best score here (6.9 vs 7.0), while costing about 15.6x less than Gemini 3.5 Flash.

Last updated at: 2026-06-12

Metric Gemini 3.5 Flash Gemini 3.5 Flash none Release: 2026-05-19 Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01
Score 7.0 6.9
Rank #66 #67
Reliability 10.0 10.0
Consistency 8.9 9.4
Tests Correct
Attempt pass rate 77.8% 56.7%
Flaky tests 3 1
Total Runs 63 60
Cost per result 7.190 0.198
Total Cost $1.079 $0.070
Input Price $1.500 / 1M $0.090 / 1M
Output Price $9.000 / 1M $0.300 / 1M
Total Input Tokens 13,843 34,431
Output Tokens 117,518 91,587
Reasoning Tokens 0 195,973
Response Time (avg) 9.93s 72.53s
Response Time (max) 64.36s 453.94s
Response Time (total) 178.68s 1015.47s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#66 Gemini 3.5 Flash

none
Cost
$0.225
Time
125.5s
Tokens
25,004 tok

#67 Step 3.5 Flash

medium
Cost
$0.008
Time
277.1s
Tokens
23,695 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.53s 492 5,101 0
Step 3.5 Flash 10.0 10.0 100.0% 0 40.57s 694 20,391 24,176
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 8.8 7.8 88.9% 1 34.69s 8,122 75,927 0
Step 3.5 Flash 3.5 7.8 0.0% 0 258.38s 2,211 13,207 22,429
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 3.0 10.0 0.0% 0 0ms 0 0 0
Step 3.5 Flash 10.0 10.0 100.0% 0 29.57s 13,638 1,176 12,984
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 6.5 10.0 50.0% 0 8.10s 2,781 5,895 0
Step 3.5 Flash 10.0 10.0 100.0% 0 15.01s 7,368 600 13,886
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.6 7.2 77.8% 1 10.64s 633 17,910 0
Step 3.5 Flash 5.3 7.2 44.4% 1 170.45s 673 45,350 90,436
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.46s 486 1,620 0
Step 3.5 Flash 5.5 10.0 0.0% 0 22.39s 509 240 3,506
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.8 10.0 100.0% 0 3.38s 615 3,928 0
Step 3.5 Flash 8.3 10.0 50.0% 0 4.78s 705 2,364 3,521
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.13s 558 4,640 0
Step 3.5 Flash 5.3 10.0 33.3% 0 7.22s 711 5,630 10,861
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 3.0 10.0 0.0% 0 0ms 0 0 0
Step 3.5 Flash 10.0 10.0 100.0% 0 11.91s 7,701 275 3,802
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 2.8 1.6 33.3% 1 4.87s 156 2,497 0
Step 3.5 Flash 3.0 10.0 0.0% 0 108.45s 221 2,354 10,372

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