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Gemini 3.8 Flash (medium) vs GPT-5.5 (medium)

Gemini 3.8 Flash (medium) leads on average score with 9.1 vs 9.0. Gemini 3.8 Flash (medium) has the lower benchmark cost at $0.653 vs $4.163. Gemini 3.8 Flash (medium) is faster at 14.50s vs 38.97s, with pass rates of 92.4% vs 87.9%.

Last updated at: 2026-09-02

Rank
#17
Total Output Tokens
154,908
Response Time (avg)
14.50s
Total Cost
$0.653
Rank
#22
Total Output Tokens
125,316
Response Time (avg)
38.97s
Total Cost
$4.163
Recommended model Gemini 3.8 Flash (medium)

It has the best score here (9.1), while costing about 6.4x less than GPT-5.5 (medium).

Detailed comparison

Metric Gemini 3.8 Flash Gemini 3.8 Flash medium Release: 2026-09-02 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 9.1 9.0
Rank #17 #22
Reliability 10.0 10.0
Consistency 9.3 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 92.4% 87.9%
Flaky tests 2 3
Total Runs 66 66
Cost per result 3.436 23.127
Total Cost $0.653 $4.163
Input Price $0.750 / 1M $5.000 / 1M
Output Price $3.750 / 1M $30.000 / 1M
Total Input Tokens 95,793 80,668
Output Tokens 7,066 5,617
Reasoning Tokens 147,842 119,699
Response Time (avg) 14.50s 38.97s
Response Time (max) 108.60s 332.10s
Response Time (total) 318.92s 857.43s
Parameters ~500B total (~20B active) ~1.5T total (~100B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#17 Gemini 3.8 Flash

medium
Cost
$0.037
Time
54.6s
Tokens
9,712 tok

#22 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 3.8 Flash 8.0 9.9 66.7% 0 11.69s 8,118 454 19,433
GPT-5.5 8.8 7.8 88.9% 1 59.77s 7,305 362 24,959

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