LemonSlice

LemonSlice is a platform for building interactive AI avatars that listen, talk and respond in real time inside a product or website. Each frame is generated on the fly, so lip sync, facial expressions and body language move naturally rather than replaying recorded clips. The vendor trains its own models, including LemonSlice 2.1, a 20 billion parameter model that animates a character at 20 frames per second from one photo, and CWM 1, a Character World Model that controls actions and emotions. A user picks or uploads an image of any character, connects a language model and voice provider through the API, and deploys with a widget, a hosted pipeline or a self managed pipeline. Supported providers named on the site include OpenAI, Claude, ElevenLabs and Cartesia. Use cases range from customer support assistants to cartoon mascots for education. The vendor does not describe a consent process for uploaded faces on the home page. Pricing is published as monthly plans. Free is $0 and lets visitors chat with featured avatars. Starter is $8 per month, Creator $40, Professional $100, Scale $240 and Ultra $960, with lower prices shown for yearly billing, for example $7 for Starter. Self serve plans include API access, unlimited avatars and 30 minute calls. Ultra adds CWM 1, a cartoon model and 2 hour calls with up to 100 simultaneous sessions. Usage pricing is quoted from $0.048 per minute.