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Google: Gemini 3.5 Flash vs OpenAI: GPT-5.6 Sol

Summary

Gemini 3.5 Flash (high) vs GPT-5.6 Sol (low) benchmark comparison: Gemini 3.5 Flash (high) leads on average score with 9.8 vs 9.5. GPT-5.6 Sol (low) has the lower benchmark cost at $0.649 vs $1.115. GPT-5.6 Sol (low) is faster at 8.29s vs 8.84s, with pass rates of 96.8% vs 85.7%.

Recommended model: GPT-5.6 Sol (low) - Its score stays close to the best score here (9.5 vs 9.8), while costing about 1.7x less than Gemini 3.5 Flash (high).

Last updated at: 2026-07-09

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 GPT-5.6 Sol GPT-5.6 Sol low Release: 2026-07-09
Score 9.8 9.5
Rank #1 #3
Reliability 10.0 10.0
Consistency 9.6 9.2
Tests Correct
Attempt pass rate 96.8% 85.7%
Flaky tests 1 2
Total Runs 63 63
Cost per result 5.575 3.816
Total Cost $1.115 $0.649
Input Price $1.500 / 1M $5.000 / 1M
Output Price $9.000 / 1M $30.000 / 1M
Total Input Tokens 37,594 34,218
Output Tokens 1,975 1,898
Reasoning Tokens 115,638 14,023
Response Time (avg) 8.84s 8.29s
Response Time (max) 34.82s 53.91s
Response Time (total) 185.57s 174.04s

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

#3 GPT-5.6 Sol

low
Cost
$0.062
Time
26.7s
Tokens
2,150 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
GPT-5.6 Sol 8.3 10.0 75.0% 0 2.60s 606 174 492
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
GPT-5.6 Sol 10.0 10.0 100.0% 0 11.25s 7,302 412 3,482
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
GPT-5.6 Sol 10.0 10.0 100.0% 0 9.87s 11,019 318 792
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
GPT-5.6 Sol 10.0 10.0 100.0% 0 1.82s 7,140 222 0
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
GPT-5.6 Sol 5.3 7.2 44.4% 1 29.07s 723 71 7,822
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
GPT-5.6 Sol 10.0 10.0 100.0% 0 3.07s 477 99 135
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
GPT-5.6 Sol 10.0 10.0 100.0% 0 2.27s 660 90 146
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
GPT-5.6 Sol 8.2 7.2 88.9% 1 3.44s 642 224 534
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
GPT-5.6 Sol 10.0 10.0 100.0% 0 7.56s 5,454 258 294
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
GPT-5.6 Sol 10.0 10.0 100.0% 0 3.67s 195 30 326

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