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Google: Gemini 3.1 Pro Preview vs OpenAI: GPT-5.5

Gemini 3.1 Pro Preview (medium) leads on average score with 9.2 vs 9.0. Gemini 3.1 Pro Preview (medium) has the lower benchmark cost at $1.361 vs $4.137. Gemini 3.1 Pro Preview (medium) is faster at 21.47s vs 38.42s, with pass rates of 90.9% vs 87.9%.

Recommended modelGemini 3.1 Pro Preview (medium)It has the best score here (9.2), while costing about 3.0x less than GPT-5.5 (medium).

Last updated at: 2026-07-24

Metric Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview medium Release: 2026-02-19 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 9.2 9.0
Rank #10 #13
Reliability 10.0 10.0
Consistency 10.0 8.9
Tests Correct
Attempt pass rate 90.9% 87.9%
Flaky tests 0 3
Total Runs 66 66
Cost per result 6.801 22.980
Total Cost $1.361 $4.137
Input Price $2.000 / 1M $5.000 / 1M
Output Price $12.000 / 1M $30.000 / 1M
Total Input Tokens 92,287 80,659
Output Tokens 5,232 5,617
Reasoning Tokens 92,726 118,819
Response Time (avg) 21.47s 38.42s
Response Time (max) 88.68s 332.10s
Response Time (total) 322.08s 845.35s

Hamster playing table tennis

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

#10 Gemini 3.1 Pro Preview

medium
Cost
$0.115
Time
87.2s
Tokens
9,629 tok

#13 GPT-5.5

medium
Cost
$0.112
Time
71.9s
Tokens
3,807 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
GPT-5.5 8.8 7.8 88.9% 1 59.77s 7,305 362 24,959

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