GPT-5.6 Luna with Pro reasoning mode. Pro mode performs more model work for difficult tasks; reasoning effort remains independently configurable and defaults to medium.
Added Jul 9, 2026
Context Window
1.1M
Max Output
128.0K
Input Price (Auto)
$0.10/1M
Output Price (Auto)
$0.60/1M
Cache Read (Auto)
$0.0100/1M
Capabilities
Benchmarks
Benchmarks
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