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GPT-6 Luna (high) vs Grok 4.5 (low)

Grok 4.5 (low) leads on average score with 7.8 vs 7.7. GPT-6 Luna (high) has the lower benchmark cost at $0.074 vs $1.345. Grok 4.5 (low) is faster at 18.14s vs 20.37s, with pass rates of 73.9% vs 73.9%.

Last updated at: 2026-10-01

Compared models

Rank
#111
Total Output Tokens
101,587
Response Time (avg)
20.37s
Total Cost
$0.074
Rank
#109
Total Output Tokens
121,415
Response Time (avg)
18.14s
Total Cost
$1.345
Recommended model GPT-6 Luna (high)

Its score stays close to the best score here (7.7 vs 7.8), while costing about 18.2x less than Grok 4.5 (low).

Detailed comparison

Metric GPT-6 Luna GPT-6 Luna high Release: 2026-09-23 Grok 4.5 Grok 4.5 low Release: 2026-07-08
Score 7.7 7.8
Rank #111 #109
Reliability 10.0 10.0
Consistency 8.7 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 73.9% 73.9%
Flaky tests 4 2
Total Runs 69 69
Cost per result 0.492 8.404
Total Cost $0.074 $1.345
Input Price $0.100 / 1M $2.000 / 1M
Output Price $0.500 / 1M $6.000 / 1M
Total Input Tokens 229,986 308,068
Output Tokens 6,037 9,218
Reasoning Tokens 95,550 112,197
Response Time (avg) 20.37s 18.14s
Response Time (max) 106.93s 205.28s
Response Time (total) 468.52s 417.21s
Parameters ~400B total (~17B active) ~1.7T total (~170B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#111 GPT-6 Luna

high
Cost
$0.003
Time
49.2s
Tokens
5,231 tok

#109 SpaceXAI: Grok 4.5

low
Cost
$0.011
Time
12.4s
Tokens
2,018 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 7.8 7.4 77.8% 1 24.69s 7,302 483 15,691
Grok 4.5 10.0 10.0 100.0% 0 13.72s 9,579 303 15,641

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