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Gemini 3.1 Flash Lite Preview (medium) vs GPT-5.6 Luna (low)

Gemini 3.1 Flash Lite Preview (medium) leads on average score with 7.0 vs 6.9. GPT-5.6 Luna (low) has the lower benchmark cost at $0.049 vs $0.158. Gemini 3.1 Flash Lite Preview (medium) is faster at 6.78s vs 6.96s, with pass rates of 60.9% vs 56.5%.

Last updated at: 2026-10-09

Compared models

Rank
#166
Total Output Tokens
59,534
Response Time (avg)
6.78s
Total Cost
$0.158
Rank
#177
Total Output Tokens
28,001
Response Time (avg)
6.96s
Total Cost
$0.049
Recommended model GPT-5.6 Luna (low)

Its score stays close to the best score here (6.9 vs 7.0), while costing about 3.2x less than Gemini 3.1 Flash Lite Preview (medium).

Detailed comparison

Metric Gemini 3.1 Flash Lite Preview Gemini 3.1 Flash Lite Preview medium Release: 2026-03-03 GPT-5.6 Luna GPT-5.6 Luna low Release: 2026-07-09
Score 7.0 6.9
Rank #166 #177
Reliability 10.0 10.0
Consistency 9.9 8.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 60.9% 56.5%
Flaky tests 0 5
Total Runs 69 69
Cost per result 1.124 2.428
Total Cost $0.158 $0.049
Input Price $0.250 / 1M $0.200 / 1M
Output Price $1.500 / 1M $1.200 / 1M
Cache Read Price $0.025 / 1M $0.020 / 1M
Cache Write Price $0.084 / 1M $0.250 / 1M
Total Input Tokens 272,221 202,680
Output Tokens 12,345 9,230
Reasoning Tokens 47,189 18,771
Response Time (avg) 6.78s 6.96s
Response Time (max) 54.91s 45.74s
Response Time (total) 155.96s 160.19s
Parameters ~150B total (~10B active) ~400B total (~17B active)
Availability Closed Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#166 Gemini 3.1 Flash Lite Preview

medium
Cost
$0.003
Time
5.2s
Tokens
1,944 tok

#177 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
Gemini 3.1 Flash Lite Preview 5.5 10.0 33.3% 0 4.09s 8,126 461 8,597
GPT-5.6 Luna 5.5 10.0 33.3% 0 4.61s 7,302 557 3,535

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