2048 neurons per layer isn't really an accurate description, what he means is 2048 dimensional embeddings at each layer. The actual multihead attention layers i

2048 neurons per layer isn't really an accurate description, what he means is 2048 dimensional embeddings at each layer. The actual multihead attention layers in a transformer are not just feed forward 2048*2048, but actually have many more parameters. That's why there's 600B total.