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Google: Gemini 3.5 Flash vs OpenAI: GPT-5.4

Gemini 3.5 Flash (high) leads on average score with 9.5 vs 8.5. GPT-5.4 (medium) has the lower benchmark cost at $1.533 vs $1.976. Gemini 3.5 Flash (high) is faster at 15.07s vs 23.10s, with pass rates of 93.9% vs 77.3%.

Recommended modelGemini 3.5 Flash (high)It has the best score here (9.5), while responding about 1.5x faster than GPT-5.4 (medium).

Last updated at: 2026-07-17

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 GPT-5.4 GPT-5.4 medium Release: 2026-03-05
Score 9.5 8.5
Rank #2 #18
Reliability 10.0 10.0
Consistency 9.3 8.6
Tests Correct
Attempt pass rate 93.9% 77.3%
Flaky tests 2 4
Total Runs 66 66
Cost per result 9.879 10.220
Total Cost $1.976 $1.533
Input Price $1.500 / 1M $2.500 / 1M
Output Price $9.000 / 1M $15.000 / 1M
Total Input Tokens 107,137 81,127
Output Tokens 8,777 6,155
Reasoning Tokens 192,900 82,515
Response Time (avg) 15.07s 23.10s
Response Time (max) 145.92s 100.41s
Response Time (total) 331.48s 508.26s

Hamster playing table tennis

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

#2 Gemini 3.5 Flash

high
Cost
$0.208
Time
118.2s
Tokens
23,158 tok

#18 GPT-5.4

medium
Cost
$0.214
Time
199.6s
Tokens
14,349 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-5.4 8.8 7.8 88.9% 1 44.36s 7,305 433 24,216

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