Tencent Technical Engineering

Oct 31, 2025 · Artificial Intelligence

How SpecExit Cuts LLM Reasoning Chains by 66% and Boosts Inference Speed 2.5×

SpecExit combines speculative sampling with a lightweight draft model to predict early‑exit signals, shortening large‑reasoning model chains by up to two‑thirds and achieving up to 2.5× end‑to‑end inference acceleration on vLLM without sacrificing accuracy.