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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 (medium) benchmark comparison: Gemini 3.5 Flash (high) leads on average score with 9.8 vs 9.4. GPT-5.6 Sol (medium) has the lower benchmark cost at $0.966 vs $1.115. Gemini 3.5 Flash (high) is faster at 8.84s vs 10.79s, with pass rates of 96.8% vs 90.5%.

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 GPT-5.6 Sol GPT-5.6 Sol medium Release: 2026-07-09
Score 9.8 9.4
Rank #1 #5
Reliability 10.0 10.0
Consistency 9.6 8.8
Tests Correct
Attempt pass rate 96.8% 90.5%
Flaky tests 1 3
Total Runs 63 63
Cost per result 5.575 5.682
Total Cost $1.115 $0.966
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 1,895
Reasoning Tokens 115,638 24,600
Response Time (avg) 8.84s 10.79s
Response Time (max) 34.82s 79.40s
Response Time (total) 185.57s 226.57s

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

#5 GPT-5.6 Sol

medium
Cost
$0.124
Time
57.2s
Tokens
4,199 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 10.0 10.0 100.0% 0 2.81s 606 173 572
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 9.40s 7,302 394 4,706
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 12.13s 11,019 318 1,214
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 1.38s 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 5.9 7.2 55.6% 1 47.86s 723 71 16,201
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 3.48s 477 99 214
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 2.50s 660 96 249
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 2.98s 642 228 566
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 6.30s 5,454 264 361
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 4.7 1.6 66.7% 1 4.94s 195 30 517

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