Sources: Meta plans to begin training an LLM in Q1 2024 on its own infrastructure that it hopes will be roughly as capable as OpenAI's GPT-4 (Wall Street Journal) 10-09-2023

Wall Street Journal:
Sources: Meta plans to begin training an LLM in Q1 2024 on its own infrastructure that it hopes will be roughly as capable as OpenAI’s GPT-4 — Parent of Facebook and Instagram wants artificial-intelligence system to be as capable as OpenAI’s most advanced model — Platforms is setting its sights on OpenAI.