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GPT-6 Luna (medium) vs Hy4 preview

GPT-6 Luna (medium) leads on average score with 8.3 vs 4.9. GPT-6 Luna (medium) has the lower benchmark cost at $0.047 vs $0.165. GPT-6 Luna (medium) is faster at 18.07s vs 40.38s, with pass rates of 73.9% vs 15.9%.

Last updated at: 2026-10-13

Compared models

Rank
#88
Total Output Tokens
53,161
Response Time (avg)
18.07s
Total Cost
$0.047
Rank
#341
Total Output Tokens
9,430
Response Time (avg)
40.38s
Total Cost
$0.165
Recommended model GPT-6 Luna (medium)

It has the best score here (8.3), while costing about 3.5x less than Hy4 preview.

Detailed comparison

Metric GPT-6 Luna GPT-6 Luna medium Release: 2026-09-23 Hy4 preview Hy4 preview none Release: 2026-08-29
Score 8.3 4.9
Rank #88 #341
Reliability 10.0 6.2
Consistency 8.9 9.4
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 73.9% 15.9%
Flaky tests 3 1
Total Runs 69 69
Cost per result 0.313 5.475
Total Cost $0.047 $0.165
Input Price $0.100 / 1M $0.751 / 1M
Output Price $0.500 / 1M $2.251 / 1M
Cache Read Price $0.010 / 1M $0.038 / 1M
Cache Write Price $0.125 / 1M N/A
Total Input Tokens 203,193 185,167
Output Tokens 5,751 9,430
Reasoning Tokens 47,410 0
Response Time (avg) 18.07s 40.38s
Response Time (max) 66.44s 95.32s
Response Time (total) 415.53s 928.76s
Parameters ~400B total (~17B active) 770B total (49B active)
Availability Closed Open source

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.

#88 GPT-6 Luna

medium
Cost
$0.002
Time
23.6s
Tokens
2,966 tok

#341 Hy4 preview

none
This operation was aborted
Cost
$0.000
Time
0.0s
Tokens
0 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
GPT-6 Luna 6.6 4.6 77.8% 2 23.63s 7,302 438 10,222
Hy4 preview 3.8 9.4 0.0% 0 45.53s 6,646 4,103 0

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