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Google: Gemini 3.5 Flash vs OpenAI: GPT-5.5

Summary

Gemini 3.5 Flash (high) leads on average score with 9.8 vs 9.3. GPT-5.5 (low) has the lower benchmark cost at $0.907 vs $1.115. Gemini 3.5 Flash (high) is faster at 8.84s vs 9.76s, with pass rates of 96.8% vs 85.7%.

Recommended modelGemini 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: 2026-07-14

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 GPT-5.5 GPT-5.5 low Release: 2026-04-24
Score 9.8 9.3
Rank #1 #7
Reliability 10.0 10.0
Consistency 9.6 10.0
Tests Correct
Attempt pass rate 96.8% 85.7%
Flaky tests 1 0
Total Runs 63 63
Cost per result 5.575 5.035
Total Cost $1.115 $0.907
Input Price $1.500 / 1M $5.000 / 1M
Output Price $9.000 / 1M $30.000 / 1M
Total Input Tokens 37,594 34,209
Output Tokens 1,975 2,046
Reasoning Tokens 115,638 22,460
Response Time (avg) 8.84s 9.76s
Response Time (max) 34.82s 56.19s
Response Time (total) 185.57s 204.92s

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

#7 GPT-5.5

low
Cost
$0.068
Time
37.0s
Tokens
2,339 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

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-5.5 10.0 10.0 100.0% 0 15.04s 7,302 423 6,402

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