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Google: Gemini 3.5 Flash vs Gemini 3 PRO Preview

Last updated at: 2026-05-19

Metric Gemini 3.5 Flash Gemini 3.5 Flash medium Release: 2026-05-19 Gemini 3 PRO Preview Gemini 3 PRO Preview medium Release: 2025-11-18
Score 9.2 8.4
Rank #5 #14
Reliability 10.0 N/A
Consistency 10.0 10.0
Tests Correct
Attempt pass rate 89.5% 77.8%
Flaky tests 0 0
Total Runs 57 57
Cost per result 2.307 1.406
Total Cost $0.393 $0.197
Input Price $1.500 / 1M $0.000 / 1M
Output Price $9.000 / 1M $0.000 / 1M
Output Tokens 1,971 1,508
Reasoning Tokens 36,659 10,084
Response Time (avg) 3.90s 9.06s
Response Time (max) 12.05s 26.24s
Response Time (total) 74.13s 90.58s

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Score vs Response Time (avg)

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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 3.5 Flash 10.0 10.0 100.0% 0 2.09s 171 3,385
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 14.99s 149 1,485
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 8.22s 431 5,190
Gemini 3 PRO Preview 3.0 10.0 0.0% 0 0ms 0 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 12.05s 351 7,807
Gemini 3 PRO Preview 3.0 10.0 0.0% 0 10.37s 351 952
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 4.07s 279 3,784
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 10.84s 279 3,156
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.7 10.0 66.7% 0 5.24s 12 8,047
Gemini 3 PRO Preview 5.3 10.0 33.3% 0 7.01s 15 1,195
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.52s 115 1,144
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 9.34s 78 374
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.9 10.0 100.0% 0 2.70s 71 2,855
Gemini 3 PRO Preview 9.8 10.0 100.0% 0 3.26s 69 754
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.7 10.0 66.7% 0 2.38s 295 2,747
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 3.91s 243 1,197
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.81s 234 455
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 11.96s 324 971
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.75s 12 1,245
Gemini 3 PRO Preview 0.0 0.0 0.0% 0 0ms 0 0

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