GPT-6 Astra vs GPT-6 Luna
Which is the better AI model in 2026? Here's how they compare.
Capability profile
Artificial Analysis indices (0–100). Missing dimensions show as 0.
Head to head
GPT-6 Astra
GPT-6 Luna
Intelligence
52.7
37.3
Coding
76.9
—
Math
—
—
Context window
1,050,000
1,050,000
Output price
$50/1M
$0.5/1M
Input price
$10/1M
$0.1/1M
Speed (t/s)
58
155
Knowledge cutoff
2026-04-30
2026-05-18
Open weights
No
No
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