Rumor: Gemini 4 Pro released only to select firms under Project Bosswing

rohit @rohit3aOriginally posted 2026.09.28

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Gemini 4 Pro was released exclusively for a select few companies under Project Bosswing. It has been labeled and is considered ASI by the insiders in the industry and is a 69T Param monster. It has even been made available as an open-weight model to frontier labs to fully distill from, which explains models like Astra, Fable 5.1 and now Opus 5.5. We may never see that model publicly since they’re worried China might distill from it. FYI, 3.5 Pro was the one behind the Mythos lineup. It existed. Just not for us.