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GPT-6 Luna (medium) vs Grok 4.5 (medium)

GPT-6 Luna (medium) leads on average score with 8.3 vs 7.8. GPT-6 Luna (medium) has the lower benchmark cost at $0.047 vs $2.996. GPT-6 Luna (medium) is faster at 18.07s vs 68.44s, with pass rates of 73.9% vs 79.7%.

Last updated at: 2026-10-06

Compared models

Rank
#79
Total Output Tokens
53,161
Response Time (avg)
18.07s
Total Cost
$0.047
Rank
#107
Total Output Tokens
306,044
Response Time (avg)
68.44s
Total Cost
$2.996
Recommended model GPT-6 Luna (medium)

It has the best score here (8.3), while costing about 63.9x less than Grok 4.5 (medium).

Detailed comparison

Metric GPT-6 Luna GPT-6 Luna medium Release: 2026-09-23 Grok 4.5 Grok 4.5 medium Release: 2026-07-08
Score 8.3 7.8
Rank #79 #107
Reliability 10.0 10.0
Consistency 8.9 9.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 73.9% 79.7%
Flaky tests 3 3
Total Runs 69 69
Cost per result 0.313 14.430
Total Cost $0.047 $2.996
Input Price $0.100 / 1M $2.000 / 1M
Output Price $0.500 / 1M $6.000 / 1M
Cache Read Price $0.010 / 1M $0.300 / 1M
Cache Write Price $0.125 / 1M N/A
Total Input Tokens 203,193 308,369
Output Tokens 5,751 7,013
Reasoning Tokens 47,410 299,031
Response Time (avg) 18.07s 68.44s
Response Time (max) 66.44s 436.38s
Response Time (total) 415.53s 1574.14s
Parameters ~400B total (~17B active) ~1.7T total (~170B 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.

#79 GPT-6 Luna

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

#107 SpaceXAI: Grok 4.5

medium
Cost
$0.044
Time
59.4s
Tokens
7,512 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
Grok 4.5 7.6 7.2 77.8% 1 155.69s 9,579 390 104,634

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