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Google: Gemini 2.5 Flash vs OpenAI: GPT-5 Nano

Gemini 2.5 Flash leads on average score with 6.2 vs 6.1. Gemini 2.5 Flash has the lower benchmark cost at $0.017 vs $0.114. Gemini 2.5 Flash is faster at 6.20s vs 54.87s, with pass rates of 43.9% vs 56.1%.

Recommended modelGemini 2.5 FlashIt has the best score here (6.2), while costing about 6.8x less than GPT-5 Nano (medium).

Last updated at: 2026-07-17

Metric Gemini 2.5 Flash Gemini 2.5 Flash none Release: 2025-06-17 GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07
Score 6.2 6.1
Rank #112 #121
Reliability 10.0 10.0
Consistency 9.6 7.0
Tests Correct
Attempt pass rate 43.9% 56.1%
Flaky tests 1 8
Total Runs 66 66
Cost per result 0.186 1.267
Total Cost $0.017 $0.114
Input Price $0.300 / 1M $0.050 / 1M
Output Price $2.500 / 1M $0.400 / 1M
Total Input Tokens 39,877 94,935
Output Tokens 1,890 12,042
Reasoning Tokens 0 261,056
Response Time (avg) 6.20s 54.87s
Response Time (max) 118.00s 227.89s
Response Time (total) 136.37s 822.99s

Hamster playing table tennis

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

#112 Gemini 2.5 Flash

none
Invalid SVG
Cost
$0.164
Time
215.5s
Tokens
65,659 tok

#121 GPT-5 Nano

medium
Cost
$0.006
Time
108.5s
Tokens
13,209 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 2.5 Flash 5.5 10.0 33.3% 0 736ms 8,122 483 0
GPT-5 Nano 7.0 7.7 55.6% 1 41.62s 7,305 740 41,152

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