Unverified60% confidenceFactExact time
Google's Switch Transformer demonstrated in 2021 that routing each token to only a single expert per layer (Top-1 routing) within a Transformer can achieve stable training, improving pre-training speed by more than 7× compared to a dense model of equivalent scale.
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60%
Confidence
Long-term
Relevance
7/17/2026
First Seen
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