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Google: Gemini 2.5 Flash vs Google: Gemini 3.5 Flash

Last updated at: 2026-06-01

Metric Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17 Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19
Score 7.7 9.6
Rank #40 #2
Reliability 10.0 10.0
Consistency 9.6 9.6
Tests Correct
Attempt pass rate 68.3% 96.7%
Flaky tests 1 1
Total Runs 60 60
Cost per result 2.750 5.231
Total Cost $0.358 $0.994
Input Price $0.300 / 1M $1.500 / 1M
Output Price $2.500 / 1M $9.000 / 1M
Output Tokens 1,924 1,969
Reasoning Tokens 137,255 102,679
Response Time (avg) 15.57s 8.30s
Response Time (max) 95.48s 34.82s
Response Time (total) 311.47s 165.92s

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Score vs Total Cost

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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) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 8.4 10.0 75.0% 0 6.30s 255 10,233
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.57s 174 4,997
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 6.6 10.0 50.0% 0 54.56s 537 24,413
Gemini 3.5 Flash 10.0 10.0 100.0% 0 24.62s 450 34,170
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 28.44s 303 11,922
Gemini 3.5 Flash 10.0 10.0 100.0% 0 22.37s 351 16,323
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 4.06s 279 2,325
Gemini 3.5 Flash 10.0 10.0 100.0% 0 6.43s 279 8,466
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.9 7.2 55.6% 1 37.34s 18 80,702
Gemini 3.5 Flash 7.6 7.2 77.8% 1 14.09s 12 24,721
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 4.8 10.0 0.0% 0 4.86s 92 1,899
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.63s 115 1,650
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 9.8 10.0 100.0% 0 2.62s 69 1,203
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.35s 70 3,799
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 7.7 10.0 66.7% 0 3.18s 126 2,499
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.23s 241 4,940
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 6.20s 234 1,140
Gemini 3.5 Flash 9.8 10.0 100.0% 0 4.96s 265 1,608
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 3.0 10.0 0.0% 0 2.76s 11 919
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.94s 12 2,005

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