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GPT-6 Luna vs Qwen3.8 27B

The average score is effectively tied at 5.5 vs 5.4. Qwen3.8 27B has the lower benchmark cost at ~$0.010 vs $0.026. Qwen3.8 27B is faster at 5.05s vs 20.48s, with pass rates of 40.6% vs 39.1%.

Last updated at: 2026-10-19

Compared models

Rank
#319
Total Output Tokens
6,855
Response Time (avg)
20.48s
Total Cost
$0.026
Rank
#324
Total Output Tokens
13,791
Response Time (avg)
5.05s
Total Cost
~$0.010
Recommended model Qwen3.8 27B

It has the best score here (5.4), while costing about 2.7x less than GPT-6 Luna.

Detailed comparison

Metric GPT-6 Luna GPT-6 Luna none Release: 2026-09-23 Qwen3.8 27B Qwen3.8 27B none Release: 2026-08-14 Free Available
Score 5.5 5.4
Rank #319 #324
Reliability 9.9 10.0
Consistency 8.2 10.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 40.6% 39.1%
Flaky tests 5 0
Total Runs 69 69
Cost per result 0.367 ~0.107
Total Cost $0.026 ~$0.010
Input Price $0.100 / 1M N/A
Output Price $0.500 / 1M N/A
Cache Read Price $0.010 / 1M N/A
Cache Write Price $0.125 / 1M N/A
Total Input Tokens 222,357 281,460
Output Tokens 6,855 13,791
Reasoning Tokens 0 0
Response Time (avg) 20.48s 5.05s
Response Time (max) 98.62s 47.42s
Response Time (total) 470.96s 116.11s
Parameters ~400B total (~17B active) 27.3B
Availability Closed Weights available

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.

#319 GPT-6 Luna

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

#324 Qwen3.8 27B

none
Cost
~$0.001
Time
23.9s
Tokens
1,922 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
Qwen3.8 27B 5.5 10.0 33.3% 0 1.19s 7,911 408 0

Switch Comparison Pair

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