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Google: Gemini 3.5 Flash vs Google: Gemini 3 Flash Preview

Summary

Gemini 3.5 Flash (high) vs Gemini 3 Flash Preview (low) benchmark comparison: Gemini 3.5 Flash (high) leads on average score with 9.8 vs 7.4. Gemini 3 Flash Preview (low) has the lower benchmark cost at $0.111 vs $1.115. Gemini 3 Flash Preview (low) is faster at 5.76s vs 8.84s, with pass rates of 96.8% vs 79.4%.

Recommended model: Gemini 3.5 Flash (high) - It has the strongest score in this comparison (9.8) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-09

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 Gemini 3 Flash Preview Gemini 3 Flash Preview low Release: 2025-12-17
Score 9.8 7.4
Rank #1 #64
Reliability 10.0 10.0
Consistency 9.6 9.2
Tests Correct
Attempt pass rate 96.8% 79.4%
Flaky tests 1 2
Total Runs 63 63
Cost per result 5.575 0.689
Total Cost $1.115 $0.111
Input Price $1.500 / 1M $0.500 / 1M
Output Price $9.000 / 1M $3.000 / 1M
Total Input Tokens 37,594 36,769
Output Tokens 1,975 2,076
Reasoning Tokens 115,638 28,518
Response Time (avg) 8.84s 5.76s
Response Time (max) 34.82s 14.72s
Response Time (total) 185.57s 120.93s

Generation showcase

Hamster playing table tennis

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

#1 Gemini 3.5 Flash

high
Cost
$0.208
Time
118.2s
Tokens
23,158 tok

#64 Gemini 3 Flash Preview

low
Cost
$0.007
Time
12.1s
Tokens
2,289 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 2.57s 492 174 4,997
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.48s 500 281 3,082
Coding 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 22.96s 8,118 456 47,129
Gemini 3 Flash Preview 5.8 7.2 44.4% 1 6.00s 8,122 456 7,421
Combined 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 22.37s 12,873 351 16,323
Gemini 3 Flash Preview 3.0 10.0 0.0% 0 3.27s 12,860 326 0
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 10.0 10.0 100.0% 0 6.43s 7,548 279 8,466
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 9.40s 7,261 279 3,656
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 14.09s 633 12 24,721
Gemini 3 Flash Preview 5.3 7.2 44.4% 1 8.05s 645 12 6,410
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 3.63s 486 115 1,650
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.68s 492 120 981
Instructions following 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 3.35s 615 70 3,799
Gemini 3 Flash Preview 9.9 10.0 100.0% 0 7.02s 621 71 2,752
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 3.23s 558 241 4,940
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.77s 562 288 3,168
Tool Calling 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 4.96s 6,115 265 1,608
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.99s 5,550 234 415
Trivia 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 3.94s 156 12 2,005
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 2.75s 156 9 633

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