Ant just open-sourced UBTree, bringing parallel tree drafting to speculative decoding.
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Ant just open-sourced UBTree, bringing parallel tree drafting to speculative decoding. The problem with single-path drafting: one wrong prediction can invalidate the rest of the draft. UBTree takes a different route. It combines a Unigram proposer with a Bigram selector to build a multi-branch verification tree, while keeping neural computation fully parallel. The performance gains are worth a look: • 6.94× average speedup on Qwen3-8B • 3.43× average speedup across 6 benchmarks on Ling-3.0-Flash-124B • 4-GPU setup: ~1,010 tok/s end-to-end throughput See it decode👇
Posted by 智东西China AI News (2.9k followers) 18 h ago · 11 likes · 666 views · view the original post on X. Kept by the Dev Radar as AI dev tools.
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