Diffusion Drafting Speeds Up LLM Inference: SpecDiff Delivers Over 5.5x Speedup
nandofioretto · x · 2026-10-03
- Continuing his thread on discrete diffusion LLMs, the author notes diffusion drafting can massively accelerate autoregressive LLM inference.
- His lab's SpecDiff (2024) replaces sequential drafters with a discrete diffusion drafter, achieving over 5.5x speedup over standard speculative-style decoding; SpecDiff-2 further improves drafter-verifier alignment.
- He argues the area has no visible ceiling yet and calls it an exciting research direction.
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