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Gemma 4 31B vs GPT-5.6 Luna (low)

GPT-5.6 Luna (low) leads on average score with 6.2 vs 6.1. Gemma 4 31B has the lower benchmark cost at $0.016 vs $0.051. GPT-5.6 Luna (low) is faster at 5.20s vs 5.41s, with pass rates of 43.9% vs 54.5%.

Last updated at: 2026-08-20

Rank
#178
Total Output Tokens
13,317
Response Time (avg)
5.41s
Total Cost
$0.016
Rank
#167
Total Output Tokens
26,286
Response Time (avg)
5.20s
Total Cost
$0.051
Recommended model Gemma 4 31B

Its score stays close to the best score here (6.1 vs 6.2), while costing about 3.2x less than GPT-5.6 Luna (low).

Detailed comparison

Metric Gemma 4 31B Gemma 4 31B none Release: 2026-04-02 Free Available GPT-5.6 Luna GPT-5.6 Luna low Release: 2026-07-09
Score 6.1 6.2
Rank #178 #167
Reliability 10.0 10.0
Consistency 9.6 8.2
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 43.9% 54.5%
Flaky tests 1 5
Total Runs 66 66
Cost per result 0.366 2.437
Total Cost $0.016 $0.051
Input Price $0.090 / 1M $0.200 / 1M
Output Price $0.340 / 1M $1.200 / 1M
Total Input Tokens 125,703 96,355
Output Tokens 13,317 8,213
Reasoning Tokens 0 18,073
Response Time (avg) 5.41s 5.20s
Response Time (max) 29.95s 19.44s
Response Time (total) 108.12s 114.46s
Parameters 30.7B ~400B total (~17B active)
Availability Open source Closed

Model generation showcase

Hamster playing table tennis

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

#178 Gemma 4 31B

none
Cost
$0.001
Time
12.8s
Tokens
795 tok

#167 GPT-5.6 Luna

low
Cost
$0.011
Time
10.2s
Tokens
1,897 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
Gemma 4 31B 5.5 10.0 33.3% 0 11.19s 8,381 735 0
GPT-5.6 Luna 5.5 10.0 33.3% 0 4.61s 7,302 557 3,535

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