This looks like an April Fools' joke. GPT-5 hasn't been officially announced by OpenAI, and there's no credible source supporting this claim. Spreading speculative or misleading information, even in jest, just muddies the waters further and makes it harder to find reliable news.
It very clearly is an April's fool joke. And a bad one (it suggests an unhealthy obsession) - but an evident one («I'll be retiring, now that AGI has been achieved ... [signed] // Vancouver, BC // April 1, 2025»).
(The post got delayed for almost an hour for technical reasons.)
I find it refreshing to see a plausible aprils fools in a sea of overly obvious content marketing/PR-approved ”fools”. (And yes I was fooled by this one for a minute.)
> Spreading speculative or misleading information, even in jest, just muddies the waters further and makes it harder to find reliable news.
Meh, a drop in the ocean. Especially in AI where even CEOs are vagueposting unverifiable claims on a daily basis.