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Google: Gemini 2.5 Flash vs OpenAI: GPT-5.4

Summary

Gemini 2.5 Flash vs GPT-5.4 benchmark comparison: GPT-5.4 leads on average score with 8.5 vs 8.2. Gemini 2.5 Flash has the lower benchmark cost at $0.379 vs $1.210. Gemini 2.5 Flash is faster at 15.49s vs 22.35s, with pass rates of 69.8% vs 76.2%.

Recommended model: Gemini 2.5 Flash - Its score stays close to the best score here (8.2 vs 8.5), while costing about 3.2x less than GPT-5.4.

Last updated at: 2026-06-18

Metric Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17 GPT-5.4 GPT-5.4 medium Release: 2026-03-05
Score 8.2 8.5
Rank #24 #17
Reliability 10.0 10.0
Consistency 9.6 8.6
Tests Correct
Attempt pass rate 69.8% 76.2%
Flaky tests 1 4
Total Runs 63 63
Cost per result 2.701 8.640
Total Cost $0.379 $1.210
Input Price $0.300 / 1M $2.500 / 1M
Output Price $2.500 / 1M $15.000 / 1M
Total Input Tokens 34,476 34,108
Output Tokens 1,930 2,242
Reasoning Tokens 145,145 72,707
Response Time (avg) 15.49s 22.35s
Response Time (max) 95.48s 100.41s
Response Time (total) 325.39s 469.29s

Generation showcase

Hamster playing table tennis

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

#24 Gemini 2.5 Flash

medium
Invalid SVG
Cost
$0.000
Time
274.0s
Tokens
0 tok

#17 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 8.4 10.0 75.0% 0 6.30s 492 255 10,233
GPT-5.4 8.3 10.0 75.0% 0 4.11s 606 240 1,511
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 7.8 10.0 66.7% 0 41.01s 6,669 543 32,303
GPT-5.4 8.8 7.8 88.9% 1 44.36s 7,305 433 24,216
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 28.44s 12,522 303 11,922
GPT-5.4 10.0 10.0 100.0% 0 20.57s 11,019 301 3,543
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 4.06s 7,257 279 2,325
GPT-5.4 10.0 10.0 100.0% 0 5.32s 7,140 234 804
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.9 7.2 55.6% 1 37.34s 633 18 80,702
GPT-5.4 5.3 7.2 44.4% 1 74.27s 619 61 34,748
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 4.8 10.0 0.0% 0 4.86s 486 92 1,899
GPT-5.4 4.7 3.1 33.3% 1 4.92s 477 145 321
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 9.8 10.0 100.0% 0 2.62s 615 69 1,203
GPT-5.4 10.0 10.0 100.0% 0 3.11s 660 93 897
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 7.7 10.0 66.7% 0 3.18s 558 126 2,499
GPT-5.4 8.2 7.2 88.9% 1 9.14s 642 441 3,815
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 6.20s 5,088 234 1,140
GPT-5.4 10.0 10.0 100.0% 0 13.28s 5,445 264 1,031
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 3.0 10.0 0.0% 0 2.76s 156 11 919
GPT-5.4 3.0 10.0 0.0% 0 13.95s 195 30 1,821

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