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

Summary

Gemini 3.5 Flash (medium) vs GPT-5.6 Sol (high) benchmark comparison: GPT-5.6 Sol (high) leads on average score with 9.4 vs 9.1. Gemini 3.5 Flash (medium) has the lower benchmark cost at $0.582 vs $0.821. Gemini 3.5 Flash (medium) is faster at 4.94s vs 10.56s, with pass rates of 87.3% vs 88.9%.

Recommended model: Gemini 3.5 Flash (medium) - Its score stays close to the best score here (9.1 vs 9.4), while responding about 2.1x faster than GPT-5.6 Sol (high).

Last updated at: 2026-07-09

Metric Gemini 3.5 Flash Gemini 3.5 Flash medium Release: 2026-05-19 GPT-5.6 Sol GPT-5.6 Sol high Release: 2026-07-09
Score 9.1 9.4
Rank #11 #6
Reliability 10.0 10.0
Consistency 9.6 8.8
Tests Correct
Attempt pass rate 87.3% 88.9%
Flaky tests 1 3
Total Runs 63 63
Cost per result 3.229 4.824
Total Cost $0.582 $0.821
Input Price $1.500 / 1M $5.000 / 1M
Output Price $9.000 / 1M $30.000 / 1M
Total Input Tokens 36,936 34,114
Output Tokens 2,001 1,872
Reasoning Tokens 56,408 19,777
Response Time (avg) 4.94s 10.56s
Response Time (max) 18.07s 54.79s
Response Time (total) 103.79s 221.69s

Generation showcase

Hamster playing table tennis

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

#11 Gemini 3.5 Flash

medium
Cost
$0.201
Time
112.9s
Tokens
22,371 tok

#6 GPT-5.6 Sol

high
Cost
$0.151
Time
201.9s
Tokens
5,100 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 2.09s 492 171 3,385
GPT-5.6 Sol 8.7 7.9 91.7% 1 3.39s 606 171 644
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.9 7.5 77.8% 1 12.63s 8,118 461 24,939
GPT-5.6 Sol 10.0 10.0 100.0% 0 12.52s 7,302 404 5,656
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 12.05s 12,873 351 7,807
GPT-5.6 Sol 10.0 10.0 100.0% 0 13.68s 11,019 315 1,599
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 4.07s 7,548 279 3,784
GPT-5.6 Sol 10.0 10.0 100.0% 0 1.16s 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 7.7 10.0 66.7% 0 5.24s 633 12 8,047
GPT-5.6 Sol 5.3 7.2 44.4% 1 39.45s 619 62 9,556
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 2.52s 486 115 1,144
GPT-5.6 Sol 10.0 10.0 100.0% 0 4.40s 477 97 238
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.9 10.0 100.0% 0 2.70s 615 71 2,855
GPT-5.6 Sol 10.0 10.0 100.0% 0 2.73s 660 96 331
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.7 10.0 66.7% 0 2.38s 558 295 2,747
GPT-5.6 Sol 10.0 10.0 100.0% 0 4.10s 642 211 675
Tool Calling 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 3.81s 5,457 234 455
GPT-5.6 Sol 10.0 10.0 100.0% 0 7.08s 5,454 264 393
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 2.75s 156 12 1,245
GPT-5.6 Sol 4.7 1.6 66.7% 1 6.97s 195 30 685

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