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GPT-6 Luna vs Hy4 preview (low)

GPT-6 Luna leads on average score with 5.5 vs 5.4. GPT-6 Luna has the lower benchmark cost at $0.026 vs $1.844. GPT-6 Luna is faster at 20.48s vs 207.21s, with pass rates of 40.6% vs 21.7%.

Last updated at: 2026-10-26

Compared models

Rank
#328
Total Output Tokens
6,855
Response Time (avg)
20.48s
Total Cost
$0.026
Rank
#335
Total Output Tokens
687,477
Response Time (avg)
207.21s
Total Cost
$1.844
Recommended model GPT-6 Luna

It has the best score here (5.5), while costing about 71.8x less than Hy4 preview (low).

Detailed comparison

Metric GPT-6 Luna GPT-6 Luna none Release: 2026-09-23 Hy4 preview Hy4 preview low Release: 2026-08-29
Score 5.5 5.4
Rank #328 #335
Reliability 9.9 6.5
Consistency 8.2 8.2
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 40.6% 21.7%
Flaky tests 5 4
Total Runs 69 69
Cost per result 0.367 61.455
Total Cost $0.026 $1.844
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 222,357 162,180
Output Tokens 6,855 5,030
Reasoning Tokens 0 682,447
Response Time (avg) 20.48s 207.21s
Response Time (max) 98.62s 597.45s
Response Time (total) 470.96s 4765.91s
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.

#328 GPT-6 Luna

none
Cost
$0.002
Time
26.0s
Tokens
3,235 tok

#335 Hy4 preview

low
Provider returned error
Cost
$0.000
Time
1.1s
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 5.5 10.0 33.3% 0 8.04s 7,302 376 0
Hy4 preview 5.2 8.6 0.0% 0 219.15s 6,110 135 96,407

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