Frontier Access Is Now Government-Gated: GPT-5.6 to ~20 Partners 'Per US Gov,' Same Week Anthropic Disabled Fable/Mythos
VentureBeat·medium signal
A pattern is hardening where the most capable models ship behind government-approved allowlists before any public release. OpenAI's GPT-5.6 Sol/Terra/Luna launched to only ~20 vetted partners 'per US Gov,' the same week Anthropic disabled Fable 5 and Mythos 5 for all users after an export-control directive barred foreign nationals. For builders, the signal is that frontier capability and general availability are now decoupled, with policy — not engineering — setting the timeline.