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Google: Gemini 3.5 Flash vs OpenAI: GPT-5.5

Last updated at: 2026-05-19

Metric Gemini 3.5 Flash Gemini 3.5 Flash medium Release: 2026-05-19 GPT-5.5 GPT-5.5 low Release: 2026-04-24
Score 9.2 8.9
Rank #5 #10
Reliability 10.0 10.0
Consistency 10.0 10.0
Tests Correct
Attempt pass rate 89.5% 84.2%
Flaky tests 0 0
Total Runs 57 57
Cost per result 2.307 4.412
Total Cost $0.393 $0.706
Input Price $1.500 / 1M $5.000 / 1M
Output Price $9.000 / 1M $30.000 / 1M
Output Tokens 1,971 2,008
Reasoning Tokens 36,659 16,914
Response Time (avg) 3.90s 8.80s
Response Time (max) 12.05s 56.19s
Response Time (total) 74.13s 167.26s

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) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.09s 171 3,385
GPT-5.5 10.0 10.0 100.0% 0 4.43s 246 1,011
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 8.22s 431 5,190
GPT-5.5 10.0 10.0 100.0% 0 7.79s 369 936
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 12.05s 351 7,807
GPT-5.5 10.0 10.0 100.0% 0 9.56s 303 717
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 4.07s 279 3,784
GPT-5.5 10.0 10.0 100.0% 0 3.28s 228 157
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.7 10.0 66.7% 0 5.24s 12 8,047
GPT-5.5 5.3 10.0 33.3% 0 27.57s 69 11,731
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 2.52s 115 1,144
GPT-5.5 10.0 10.0 100.0% 0 7.14s 146 170
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.9 10.0 100.0% 0 2.70s 71 2,855
GPT-5.5 9.9 10.0 100.0% 0 2.98s 93 356
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.7 10.0 66.7% 0 2.38s 295 2,747
GPT-5.5 10.0 10.0 100.0% 0 4.94s 274 895
Tool Calling 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 3.81s 234 455
GPT-5.5 10.0 10.0 100.0% 0 4.96s 250 101
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 2.75s 12 1,245
GPT-5.5 3.0 10.0 0.0% 0 10.06s 30 840

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