Langford: Full Bandwidth Transformer drops nextlat and trains recirculation over full stack depth

JohnCLangford · x · 2026-09-04

John Langford shares two surprises from developing the Full Bandwidth Transformer (FBT): nextlat turned out to be unnecessary, and it worked easily. He also notes a parallel development: in essence, FBT trains for recirculation over the full depth of the transformer stack. He closes by congratulating OpenAI on building a very impressive model.

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