It’s very possible that Murati’s talk at Dartmouth was my source’s source, i.e. the embedded video around 13:30. She doesn’t say GPT-5 specifically but does sort of imply that by mentioning the jump from GPT-3 to GPT-4, then says “And then in the next couple of years we’re looking at PhD-level intelligence for specific tasks...Yeah, a year and a half let’s say”
Mira Murati said publicly that “next gen models” will come out in 18 months, so your confidential source seems likely to be correct.
It’s very possible that Murati’s talk at Dartmouth was my source’s source, i.e. the embedded video around 13:30. She doesn’t say GPT-5 specifically but does sort of imply that by mentioning the jump from GPT-3 to GPT-4, then says “And then in the next couple of years we’re looking at PhD-level intelligence for specific tasks...Yeah, a year and a half let’s say”