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Google: Gemini 3.1 Flash Lite vs OpenAI: GPT-5.6 Luna

Summary

Gemini 3.1 Flash Lite (minimal) vs GPT-5.6 Luna benchmark comparison: Gemini 3.1 Flash Lite (minimal) leads on average score with 6.1 vs 5.3. Gemini 3.1 Flash Lite (minimal) has the lower benchmark cost at $0.013 vs $0.047. GPT-5.6 Luna is faster at 1.06s vs 1.33s, with pass rates of 54.0% vs 36.5%.

Recommended model: Gemini 3.1 Flash Lite (minimal) - It has the best score here (6.1), while costing about 3.5x less than GPT-5.6 Luna.

Last updated at: 2026-07-09

Metric Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite minimal Release: 2026-05-08 GPT-5.6 Luna GPT-5.6 Luna none Release: 2026-07-09
Score 6.1 5.3
Rank #109 #142
Reliability 10.0 10.0
Consistency 8.8 8.8
Tests Correct
Attempt pass rate 54.0% 36.5%
Flaky tests 3 3
Total Runs 63 63
Cost per result 0.130 0.767
Total Cost $0.013 $0.047
Input Price $0.250 / 1M $1.000 / 1M
Output Price $1.500 / 1M $6.000 / 1M
Total Input Tokens 36,973 34,218
Output Tokens 2,487 1,967
Reasoning Tokens 0 0
Response Time (avg) 1.33s 1.06s
Response Time (max) 4.49s 2.80s
Response Time (total) 27.91s 22.34s

Generation showcase

Hamster playing table tennis

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

#109 Gemini 3.1 Flash Lite

minimal
Cost
$0.001
Time
3.7s
Tokens
635 tok

#142 GPT-5.6 Luna

none
Cost
$0.016
Time
15.8s
Tokens
2,685 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 8.3 10.0 75.0% 0 1.10s 500 639 0
GPT-5.6 Luna 4.8 10.0 25.0% 0 901ms 606 266 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 5.5 10.0 33.3% 0 831ms 8,126 666 0
GPT-5.6 Luna 3.8 7.2 22.2% 1 980ms 7,302 459 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 3.0 10.0 0.0% 0 2.53s 12,870 357 0
GPT-5.6 Luna 3.0 10.0 0.0% 0 2.78s 11,019 280 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 1.04s 7,552 279 0
GPT-5.6 Luna 10.0 10.0 100.0% 0 758ms 7,140 222 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 2.9 7.2 11.1% 1 1.02s 641 15 0
GPT-5.6 Luna 2.9 7.2 11.1% 1 737ms 723 54 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 4.0 10.0 0.0% 0 791ms 490 63 0
GPT-5.6 Luna 5.0 10.0 0.0% 0 1.00s 477 150 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 932ms 615 72 0
GPT-5.6 Luna 7.1 5.8 83.3% 1 1.23s 660 86 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 6.0 4.6 66.7% 2 2.15s 564 153 0
GPT-5.6 Luna 5.3 10.0 33.3% 0 790ms 642 202 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 3.51s 5,457 234 0
GPT-5.6 Luna 10.0 10.0 100.0% 0 2.80s 5,454 222 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 3.0 10.0 0.0% 0 724ms 158 9 0
GPT-5.6 Luna 3.0 10.0 0.0% 0 651ms 195 26 0

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