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Google: Gemini 3.1 Pro Preview vs Google: Gemini 3 Flash Preview

Gemini 3 Flash Preview (medium) leads on average score with 9.6 vs 9.2. Gemini 3 Flash Preview (medium) has the lower benchmark cost at $0.742 vs $1.361. Gemini 3 Flash Preview (medium) is faster at 19.20s vs 21.47s, with pass rates of 90.9% vs 98.5%.

Recommended modelGemini 3 Flash Preview (medium)It has the best score here (9.6), while costing about 1.8x less than Gemini 3.1 Pro Preview (medium).

Last updated at: 2026-07-18

Metric Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview medium Release: 2026-02-19 Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17
Score 9.2 9.6
Rank #7 #1
Reliability 10.0 10.0
Consistency 10.0 9.7
Tests Correct
Attempt pass rate 90.9% 98.5%
Flaky tests 0 1
Total Runs 66 66
Cost per result 6.801 3.533
Total Cost $1.361 $0.742
Input Price $2.000 / 1M $0.500 / 1M
Output Price $12.000 / 1M $3.000 / 1M
Total Input Tokens 92,287 87,861
Output Tokens 5,232 5,486
Reasoning Tokens 92,726 227,164
Response Time (avg) 21.47s 19.20s
Response Time (max) 88.68s 117.26s
Response Time (total) 322.08s 422.42s

Hamster playing table tennis

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

#7 Gemini 3.1 Pro Preview

medium
Cost
$0.115
Time
87.2s
Tokens
9,629 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 3.1 Pro Preview 7.9 9.9 66.7% 0 40.17s 8,124 435 41,247
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084

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