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Gemini 3 Flash Preview (low) vs GPT-5.6 Luna (medium)

GPT-5.6 Luna (medium) leads on average score with 7.4 vs 7.4. GPT-5.6 Luna (medium) has the lower benchmark cost at $0.072 vs $0.185. Gemini 3 Flash Preview (low) is faster at 6.51s vs 7.43s, with pass rates of 75.8% vs 62.1%.

Last updated at: 2026-08-20

Rank
#97
Total Output Tokens
40,776
Response Time (avg)
6.51s
Total Cost
$0.185
Rank
#93
Total Output Tokens
44,525
Response Time (avg)
7.43s
Total Cost
$0.072
Recommended model GPT-5.6 Luna (medium)

It has the best score here (7.4), while costing about 2.6x less than Gemini 3 Flash Preview (low).

Detailed comparison

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview low Release: 2025-12-17 GPT-5.6 Luna GPT-5.6 Luna medium Release: 2026-07-09
Score 7.4 7.4
Rank #97 #93
Reliability 10.0 10.0
Consistency 9.2 9.2
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 75.8% 62.1%
Flaky tests 2 2
Total Runs 66 66
Cost per result 1.152 2.601
Total Cost $0.185 $0.072
Input Price $0.500 / 1M $0.200 / 1M
Output Price $3.000 / 1M $1.200 / 1M
Total Input Tokens 123,687 89,685
Output Tokens 9,572 5,701
Reasoning Tokens 31,204 38,824
Response Time (avg) 6.51s 7.43s
Response Time (max) 17.13s 29.85s
Response Time (total) 143.12s 163.54s
Parameters ~500B total (~20B active) ~400B total (~17B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#97 Gemini 3 Flash Preview

low
Cost
$0.007
Time
12.1s
Tokens
2,289 tok

#93 GPT-5.6 Luna

medium
Cost
$0.014
Time
14.6s
Tokens
2,362 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 Flash Preview 5.8 7.2 44.4% 1 6.00s 8,122 456 7,421
GPT-5.6 Luna 5.4 7.2 44.4% 1 10.38s 7,302 564 9,928

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