Pronunciation of the day: NF4

4-bit NormalFloat, the information-theoretically-optimal 4-bit datatype introduced in the QLoRA paper (Dettmers et al., 2023) and shipped in bitsandbytes for quantized fine-tuning. Read as an initialism plus the digit: N-F-FOUR. "NF" = NormalFloat, "4" = 4-bit. Main stress on FOUR. Not "niff-four".

For the full source citation, alternate readings, and CLI usage, see the canonical page → NF4.