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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 6.9. GPT-5.6 Luna (medium) has the lower benchmark cost at $0.065 vs $0.254. Gemini 3 Flash Preview (low) is faster at 8.51s vs 9.64s, with pass rates of 72.5% vs 62.3%.

Last updated at: 2026-10-24

Compared models

Rank
#195
Total Output Tokens
42,400
Response Time (avg)
8.51s
Total Cost
$0.254
Rank
#154
Total Output Tokens
47,986
Response Time (avg)
9.64s
Total Cost
$0.065
Recommended model GPT-5.6 Luna (medium)

It has the best score here (7.4), while costing about 3.9x 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 6.9 7.4
Rank #195 #154
Reliability 10.0 10.0
Consistency 9.3 9.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 72.5% 62.3%
Flaky tests 2 3
Total Runs 69 69
Cost per result 1.582 2.822
Total Cost $0.254 $0.065
Input Price $0.500 / 1M $0.200 / 1M
Output Price $3.000 / 1M $1.200 / 1M
Cache Read Price $0.050 / 1M $0.020 / 1M
Cache Write Price $0.084 / 1M $0.250 / 1M
Total Input Tokens 251,677 212,780
Output Tokens 11,196 6,849
Reasoning Tokens 31,204 41,137
Response Time (avg) 8.51s 9.64s
Response Time (max) 52.64s 58.09s
Response Time (total) 195.76s 221.62s
Parameters ~500B total (~20B 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.

#195 Gemini 3 Flash Preview

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

#154 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

Quick Compare

Switch Comparison Pair

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