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Gemini 3 PRO Preview vs OpenAI: GPT-5.5

Last updated at: 2026-05-10

Metric Gemini 3 PRO Preview Gemini 3 PRO Preview medium Release: 2025-11-18 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 8.4 8.9
Rank #10 #4
Reliability N/A 10.0
Consistency 10.0 9.1
Tests Correct
Attempt pass rate 77.8% 87.7%
Flaky tests 0 2
Total Runs 57 57
Cost per result 1.406 18.365
Total Cost $0.197 $2.939
Input Price $0.000 / 1M $5.000 / 1M
Output Price $0.000 / 1M $30.000 / 1M
Output Tokens 1,508 1,950
Reasoning Tokens 10,084 91,386
Response Time (avg) 9.06s 33.02s
Response Time (max) 26.24s 332.10s
Response Time (total) 90.58s 627.45s

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 PRO Preview 10.0 10.0 100.0% 0 14.99s 149 1,485
GPT-5.5 10.0 10.0 100.0% 0 4.66s 250 1,335
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 3.0 10.0 0.0% 0 0ms 0 0
GPT-5.5 10.0 10.0 100.0% 0 9.09s 318 1,391
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 3.0 10.0 0.0% 0 10.37s 351 952
GPT-5.5 10.0 10.0 100.0% 0 19.29s 312 2,841
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 10.84s 279 3,156
GPT-5.5 10.0 10.0 100.0% 0 4.18s 234 593
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 5.3 10.0 33.3% 0 7.01s 15 1,195
GPT-5.5 5.3 7.2 44.4% 1 164.14s 67 79,625
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 9.34s 78 374
GPT-5.5 10.0 10.0 100.0% 0 4.16s 138 223
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 9.8 10.0 100.0% 0 3.26s 69 754
GPT-5.5 10.0 10.0 100.0% 0 3.36s 93 538
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 3.91s 243 1,197
GPT-5.5 10.0 10.0 100.0% 0 6.78s 250 2,254
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 10.0 10.0 100.0% 0 11.96s 324 971
GPT-5.5 10.0 10.0 100.0% 0 10.57s 258 832
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 PRO Preview 0.0 0.0 0.0% 0 0ms 0 0
GPT-5.5 2.8 1.6 33.3% 1 37.86s 30 1,754

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