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Google: Gemini 2.5 Flash vs StepFun: Step 3.5 Flash

Summary

Gemini 2.5 Flash vs Step 3.5 Flash benchmark comparison: Step 3.5 Flash leads on average score with 6.6 vs 6.2. Gemini 2.5 Flash has the lower benchmark cost at $0.016 vs $0.070. Gemini 2.5 Flash is faster at 875ms vs 72.53s, with pass rates of 46.0% vs 54.0%.

Recommended model: Gemini 2.5 Flash - Its score stays close to the best score here (6.2 vs 6.6), while costing about 4.5x less than Step 3.5 Flash.

Last updated at: 2026-06-18

Metric Gemini 2.5 Flash Gemini 2.5 Flash none Release: 2025-06-17 Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01
Score 6.2 6.6
Rank #93 #80
Reliability 10.0 10.0
Consistency 9.6 8.9
Tests Correct
Attempt pass rate 46.0% 54.0%
Flaky tests 1 1
Total Runs 63 60
Cost per result 0.169 0.198
Total Cost $0.016 $0.070
Input Price $0.300 / 1M $0.090 / 1M
Output Price $2.500 / 1M $0.300 / 1M
Total Input Tokens 35,926 34,431
Output Tokens 1,770 91,587
Reasoning Tokens 0 195,973
Response Time (avg) 875ms 72.53s
Response Time (max) 4.39s 453.94s
Response Time (total) 18.37s 1015.47s

Generation showcase

Hamster playing table tennis

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

#93 Gemini 2.5 Flash

none
Invalid SVG
Cost
$0.164
Time
215.5s
Tokens
65,659 tok

#80 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 2.5 Flash 3.0 10.0 0.0% 0 582ms 492 102 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 2.5 Flash 5.5 10.0 33.3% 0 736ms 8,122 483 0
Step 3.5 Flash 2.4 5.2 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 2.5 Flash 3.0 10.0 0.0% 0 4.39s 12,519 366 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 2.5 Flash 10.0 10.0 100.0% 0 652ms 7,257 279 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 2.5 Flash 5.9 7.2 55.6% 1 495ms 633 12 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 2.5 Flash 5.0 10.0 0.0% 0 615ms 486 78 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 2.5 Flash 10.0 10.0 100.0% 0 590ms 615 72 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 2.5 Flash 7.7 10.0 66.7% 0 604ms 558 132 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 2.5 Flash 10.0 10.0 100.0% 0 1.91s 5,088 234 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 2.5 Flash 3.0 10.0 0.0% 0 1.15s 156 12 0
Step 3.5 Flash 3.0 10.0 0.0% 0 108.45s 221 2,354 10,372

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