Microsoft Research Proposes Full-Bandwidth Transformer: Latent Feedback Boosts Performance for Free

YouJiacheng · x · 2026-08-11

Microsoft AI Frontiers researchers propose the full-bandwidth transformer, which feeds the previous top-layer hidden state back into the input via a gated linear unit, widening the vertical feedback channel. Trained with a scheduled multi-pass objective, 1B-parameter models show improved validation loss, language modeling, math, and code generation, with negligible decoding overhead, matching standard transformers trained with 1.5x more tokens.

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