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Google: Gemini 2.5 Flash vs Google: Gemini 3 Flash Preview

Gemini 3 Flash Preview (medium) leads on average score with 9.6 vs 6.2. Gemini 2.5 Flash has the lower benchmark cost at $0.017 vs $0.742. Gemini 2.5 Flash is faster at 6.20s vs 19.20s, with pass rates of 43.9% vs 98.5%.

Recommended modelGemini 3 Flash Preview (medium)It has the strongest score in this comparison (9.6) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-17

Metric Gemini 2.5 Flash Gemini 2.5 Flash none Release: 2025-06-17 Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17
Score 6.2 9.6
Rank #112 #1
Reliability 10.0 10.0
Consistency 9.6 9.7
Tests Correct
Attempt pass rate 43.9% 98.5%
Flaky tests 1 1
Total Runs 66 66
Cost per result 0.186 3.533
Total Cost $0.017 $0.742
Input Price $0.300 / 1M $0.500 / 1M
Output Price $2.500 / 1M $3.000 / 1M
Total Input Tokens 39,877 87,861
Output Tokens 1,890 5,486
Reasoning Tokens 0 227,164
Response Time (avg) 6.20s 19.20s
Response Time (max) 118.00s 117.26s
Response Time (total) 136.37s 422.42s

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

#1 Gemini 3 Flash Preview

medium
Cost
$0.010
Time
18.4s
Tokens
3,351 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
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084

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