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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 high Release: 2026-05-19 Gemini 3 PRO Preview Gemini 3 PRO Preview medium Release: 2025-11-18
Score 9.6 8.4
Rank #4 #14
Reliability 10.0 N/A
Consistency 9.6 10.0
Tests Correct
Attempt pass rate 96.5% 77.8%
Flaky tests 1 0
Total Runs 57 57
Cost per result 4.294 1.406
Total Cost $0.773 $0.197
Input Price $1.500 / 1M $0.000 / 1M
Output Price $9.000 / 1M $0.000 / 1M
Output Tokens 1,945 1,508
Reasoning Tokens 78,877 10,084
Response Time (avg) 6.90s 9.06s
Response Time (max) 22.37s 26.24s
Response Time (total) 131.10s 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 2.57s 174 4,997
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 14.42s 426 10,368
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 22.37s 351 16,323
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 6.43s 279 8,466
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 7.6 7.2 77.8% 1 14.09s 12 24,721
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 3.63s 115 1,650
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 10.0 10.0 100.0% 0 3.35s 70 3,799
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 10.0 10.0 100.0% 0 3.23s 241 4,940
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 9.8 10.0 100.0% 0 4.96s 265 1,608
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 3.94s 12 2,005
Gemini 3 PRO Preview 0.0 0.0 0.0% 0 0ms 0 0

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