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Kimi K2.5 (medium) vs GPT-6 Luna (medium)

GPT-6 Luna (medium) leads on average score with 8.3 vs 6.4. GPT-6 Luna (medium) has the lower benchmark cost at $0.047 vs $0.841. GPT-6 Luna (medium) is faster at 18.07s vs 125.76s, with pass rates of 60.9% vs 73.9%.

Last updated at: 2026-10-03

Compared models

Rank
#208
Total Output Tokens
241,096
Response Time (avg)
125.76s
Total Cost
$0.841
Rank
#79
Total Output Tokens
53,161
Response Time (avg)
18.07s
Total Cost
$0.047
Recommended model GPT-6 Luna (medium)

It has the best score here (8.3), while costing about 17.9x less than Kimi K2.5 (medium).

Detailed comparison

Metric Kimi K2.5 Kimi K2.5 medium Release: 2026-01-27 GPT-6 Luna GPT-6 Luna medium Release: 2026-09-23
Score 6.4 8.3
Rank #208 #79
Reliability 9.6 10.0
Consistency 7.1 8.9
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 60.9% 73.9%
Flaky tests 8 3
Total Runs 69 69
Cost per result 6.085 0.313
Total Cost $0.841 $0.047
Input Price $0.450 / 1M $0.100 / 1M
Output Price $2.250 / 1M $0.500 / 1M
Cache Read Price $0.070 / 1M $0.010 / 1M
Cache Write Price N/A $0.125 / 1M
Total Input Tokens 292,271 203,193
Output Tokens 55,025 5,751
Reasoning Tokens 186,071 47,410
Response Time (avg) 125.76s 18.07s
Response Time (max) 566.79s 66.44s
Response Time (total) 2137.84s 415.53s
Parameters 1T total (32B active) ~400B total (~17B active)
Availability Weights available 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.

#208 MoonshotAI: Kimi K2.5

medium
Cost
$0.030
Time
58.6s
Tokens
8,683 tok

#79 GPT-6 Luna

medium
Cost
$0.002
Time
23.6s
Tokens
2,966 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
Kimi K2.5 6.1 4.6 66.7% 2 217.49s 6,935 5,705 74,693
GPT-6 Luna 6.6 4.6 77.8% 2 23.63s 7,302 438 10,222

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