Original link: Construction, Power Timeline for xAI to Reach a 3 Million GPU Supercluster / NextBigFuture.
The short version is:
end of 2025 : 1 million GPU's end of 2026 : 2 million GPU's end of 2027 : 3 million GPU'sI don't think even Elon Musk knows the plans so far ahead, but it seems reasonable to expect that Elon Musk will not stop moving forward.