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GPT-6 Luna (medium) vs Grok 4.6 (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 $2.270. GPT-6 Luna (medium) is faster at 18.07s vs 74.77s, with pass rates of 73.9% vs 78.3%.

Last updated at: 2026-10-19

Compared models

Rank
#95
Total Output Tokens
53,161
Response Time (avg)
18.07s
Total Cost
$0.047
Rank
#130
Total Output Tokens
266,197
Response Time (avg)
74.77s
Total Cost
$2.270
Recommended model GPT-6 Luna (medium)

It has the best score here (8.3), while costing about 48.4x less than Grok 4.6 (medium).

Detailed comparison

Metric GPT-6 Luna GPT-6 Luna medium Release: 2026-09-23 Grok 4.6 Grok 4.6 medium Release: 2026-08-12
Score 8.3 7.8
Rank #95 #130
Reliability 10.0 10.0
Consistency 8.9 8.7
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 73.9% 78.3%
Flaky tests 3 4
Total Runs 69 69
Cost per result 0.313 14.187
Total Cost $0.047 $2.270
Input Price $0.100 / 1M $2.000 / 1M
Output Price $0.500 / 1M $6.000 / 1M
Cache Read Price $0.010 / 1M $0.500 / 1M
Cache Write Price $0.125 / 1M N/A
Total Input Tokens 203,193 336,351
Output Tokens 5,751 6,180
Reasoning Tokens 47,410 260,017
Response Time (avg) 18.07s 74.77s
Response Time (max) 66.44s 514.35s
Response Time (total) 415.53s 1719.73s
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.

#95 GPT-6 Luna

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

#130 SpaceXAI: Grok 4.6

medium
Cost
$0.028
Time
72.1s
Tokens
4,771 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 4.6 8.2 7.2 88.9% 1 120.05s 9,579 351 64,226

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