GPT-6 Luna vs GPT-6.1 Sol
Which is the better AI model in 2026? Here's how they compare.
Domain intelligence profile
Artificial Analysis Intelligence Index by domain (0–100). Missing dimensions show as 0.
Head to head
GPT-6 Luna
GPT-6.1 Sol
Intelligence
27.9
54.6
Engineering
33.3
59.4
Legal
32.2
53.7
Finance
33.9
56.2
Healthcare
34.8
52
Economics
34.5
56.3
Strategy & Ops
43.2
57.6
Context window
1,050,000
1,050,000
Output price
$0.5/1M
$10/1M
Input price
$0.1/1M
$2/1M
Speed (t/s)
114
59
Knowledge cutoff
2026-05-18
2026-04-30
Open weights
No
No
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