Astra's rumored looped transformer gets a technical debunk, with Oriol Vinyals citing Universal Transformer

OriolVinyalsML · x · 2026-09-03

The Information reported that OpenAI's rumored Astra model uses a "recurrent depth or looped transformer" architecture, sparking debate.

Sebastian Raschka published a detailed technical breakdown to contextualize and debunk the hype around looped transformers, noting he shared a related architectural analysis two months ago.

DeepMind VP Oriol Vinyals replied "Universal Transformer FTW", tagging author Mostafa Dehghani — implying the "new" approach echoes the 2018 Universal Transformer.

Related event: Debate Erupts Over OpenAI Astra's Rumored Looped Transformer Architecture(3 posts)→

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