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Google: Gemini 3.5 Flash vs OpenAI: GPT-5.4 Mini

Summary

Gemini 3.5 Flash vs GPT-5.4 Mini benchmark comparison: GPT-5.4 Mini leads on average score with 8.0 vs 7.0. GPT-5.4 Mini has the lower benchmark cost at $0.526 vs $1.079. Gemini 3.5 Flash is faster at 9.93s vs 22.34s, with pass rates of 77.8% vs 73.0%.

Recommended model: GPT-5.4 Mini - It has the best score here (8.0), while costing about 2.1x less than Gemini 3.5 Flash.

Last updated at: 2026-06-12

Metric Gemini 3.5 Flash Gemini 3.5 Flash none Release: 2026-05-19 GPT-5.4 Mini GPT-5.4 Mini medium Release: 2026-03-17
Score 7.0 8.0
Rank #66 #30
Reliability 10.0 10.0
Consistency 8.9 8.0
Tests Correct
Attempt pass rate 77.8% 73.0%
Flaky tests 3 5
Total Runs 63 63
Cost per result 7.190 4.381
Total Cost $1.079 $0.526
Input Price $1.500 / 1M $0.750 / 1M
Output Price $9.000 / 1M $4.500 / 1M
Total Input Tokens 13,843 34,116
Output Tokens 117,518 2,181
Reasoning Tokens 0 108,937
Response Time (avg) 9.93s 22.34s
Response Time (max) 64.36s 138.75s
Response Time (total) 178.68s 469.20s

Generation showcase

Hamster playing table tennis

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

#66 Gemini 3.5 Flash

none
Cost
$0.225
Time
125.5s
Tokens
25,004 tok

#30 GPT-5.4 Mini

medium
Cost
$0.056
Time
95.5s
Tokens
12,464 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 2.53s 492 5,101 0
GPT-5.4 Mini 8.6 7.9 91.7% 1 4.05s 606 296 2,876
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 8.8 7.8 88.9% 1 34.69s 8,122 75,927 0
GPT-5.4 Mini 8.4 7.4 88.9% 1 57.87s 7,305 467 40,902
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 3.0 10.0 0.0% 0 0ms 0 0 0
GPT-5.4 Mini 10.0 10.0 100.0% 0 17.81s 11,019 317 4,317
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 6.5 10.0 50.0% 0 8.10s 2,781 5,895 0
GPT-5.4 Mini 10.0 10.0 100.0% 0 2.43s 7,140 234 650
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.6 7.2 77.8% 1 10.64s 633 17,910 0
GPT-5.4 Mini 4.1 4.4 44.5% 2 65.31s 619 60 43,286
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 3.46s 486 1,620 0
GPT-5.4 Mini 4.5 10.0 0.0% 0 3.72s 477 150 510
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.8 10.0 100.0% 0 3.38s 615 3,928 0
GPT-5.4 Mini 9.8 10.0 100.0% 0 2.13s 660 96 1,185
Puzzle Solving 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 3.13s 558 4,640 0
GPT-5.4 Mini 7.8 10.0 66.7% 0 4.37s 642 278 2,443
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 3.0 10.0 0.0% 0 0ms 0 0 0
GPT-5.4 Mini 4.7 1.6 66.7% 1 9.62s 5,453 251 2,594
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 2.8 1.6 33.3% 1 4.87s 156 2,497 0
GPT-5.4 Mini 3.0 10.0 0.0% 0 30.10s 195 32 10,174

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