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Gemini 2.5 Flash vs GPT-5 Nano (medium)

Gemini 2.5 Flash leads on average score with 6.0 vs 6.0. Gemini 2.5 Flash has the lower benchmark cost at $0.017 vs $0.118. Gemini 2.5 Flash is faster at 6.19s vs 54.20s, with pass rates of 39.4% vs 54.5%.

Last updated at: 2026-08-29

Rank
#184
Total Output Tokens
1,890
Response Time (avg)
6.19s
Total Cost
$0.017
Rank
#188
Total Output Tokens
282,437
Response Time (avg)
54.20s
Total Cost
$0.118
Recommended model Gemini 2.5 Flash

It has the best score here (6.0), while costing about 7.1x less than GPT-5 Nano (medium).

Detailed comparison

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 6.0 6.0
Rank #184 #188
Reliability 10.0 10.0
Consistency 9.6 6.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 39.4% 54.5%
Flaky tests 1 9
Total Runs 66 66
Cost per result 0.209 1.472
Total Cost $0.017 $0.118
Input Price $0.300 / 1M $0.050 / 1M
Output Price $2.500 / 1M $0.400 / 1M
Total Input Tokens 39,886 94,944
Output Tokens 1,890 12,037
Reasoning Tokens 0 270,400
Response Time (avg) 6.19s 54.20s
Response Time (max) 118.00s 227.89s
Response Time (total) 136.23s 867.23s
Parameters ~350B total (~20B active) ~120B total (~5B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#184 Gemini 2.5 Flash

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

#188 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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