Show HN: LemonSlice – Give your voice agents a face
Summary
LemonSlice announces Lemon Slice 2, a 20B-parameter diffusion transformer that can generate video avatars in real time at 20fps on a single GPU, with an API and LiveKit integration. The post delves into the technical optimizations (causal modeling, sliding window attention, distillation, RoPE changes, kernel fusion, rolling KV cache) that enable streaming performance, and outlines pricing, a developer playground, and use cases like training and roleplaying for enterprise contexts. It highlights the potential of photoreal or stylized video avatars as a primary form factor for conversational AI and invites feedback from the community.