You misread.
There had been multiple LLM projects within FAIR for years. Some were open sourced as research prototypes (e.g. OPT175B, Galactica, BlenderBot…).
In mid-2022, FAIR started a large LLM project called Zetta, which was still going in late 2022 when ChatGPT came out.
A

→ View original post on X — @ylecun