LemonFusion — the avatar implementation sprint
A two-week sprint to design, build, and deploy a live AI avatar experience.
We've partnered with Lemonslice, the team behind the most expressive, interactive AI avatars in the market. Their avatars are built to connect: ultra-low latency, calls up to 24 hours long, and more than 1,000 concurrent conversations, with a basic setup in about five minutes.
LemonFusion is a fixed-scope, zero-to-one engagement on top of that: we handle setup, knowledge base design, UI development, and deployment. Only three slots remain for August, and the next cohort may not open until December.
Apply hereWho it's for
Teams that want to explore avatar-powered experiences without committing to a large custom build upfront. The sprint produces something real and usable in two weeks, with clear expectations and dedicated collaboration.
Customer experiences
A concierge that greets visitors, answers questions, and walks people through your product.
Education & training
Tutors and onboarding guides that talk people through the material at their own pace.
Interactive entertainment
Characters that hold a live conversation with your audience.
Everything you get
Price depends on scope, and every engagement includes all of the following. Slots go in order of inquiry — the next cohort may not open until December.
Your input shapes the build
- A 1-hour onboarding to define scope and success criteria
- A written scope doc you sign off on before we build
- A private Slack channel with both teams in it
- A mid-sprint demo so you can steer the build
Design & build
- Avatar persona: appearance, voice, and personality
- A custom knowledge base from your docs and site
- A custom UI — docked on your site or full-screen
- A live deployment on a URL you can share
Direct access to Lemonslice
- A 30-minute 1:1 with the CEO of Lemonslice
- Up to 2 sessions with their technical team
- Enterprise features without an Enterprise contract
- A chance to be featured on their socials and site
Yours to keep
- A working PoC for your team or investors
- The complete source code, owned by you
- Written directions to run, maintain, and extend it
- A production roadmap and two weeks of support
Sample use cases
Avatars go to work in two ways: docked in the corner of the site you already have, or as a full-screen guided experience. Here is what that looks like across six common use cases. A sprint can start from one of these patterns, or from something new.
Docked on your site
The avatar sits in the corner of your existing site. It reads the page, answers questions, and can navigate or fill forms for the visitor.
Sales Assistant. Qualifies leads, presents product demos, and schedules follow-up meetings automatically.
Sales
Customer Support. Answers common questions, troubleshoots issues, and escalates to human agents when needed.
Support
Lead Capture. Engages website visitors, understands their needs, and captures contact information.
Marketing
Appointment Booking. Checks availability, helps customers pick a time, and confirms booking details.
ServicesFull-screen experiences
A guided destination built around the avatar. It presents, narrates, and collects information step by step, so a form becomes a conversation.
Patient Onboarding. Welcomes new patients, collects intake information step by step, and schedules initial appointments.
Healthcare
Employee Onboarding. Walks new hires through setup, with a verification step before the experience moves on.
HRSee it live
The video call widget in the corner of this page is running an avatar of our team right now, built on Lemonslice, so you can try the experience before reaching out. Below are the avatars we built for our own site.
Dean. A live avatar of our founder, on this site today.
Joseph. Our avatar concierge, ready to walk visitors through the studio.
Protected workAmazon. Years of voice and conversational AI work, under NDA. Case studies available on request.
About Fusion
We're a creative technology studio in New York. We've spent over a decade building interactive experiences for organizations like Netflix, Amazon, and Peacock, and for startups from Series A to C. With Lemonslice, we build bespoke avatar experiences for business and entertainment.
Recent work
A few pieces from recent engagements. Full case studies live in our work.
Branding
Research & product design
AI
Apply
Apply below and the sprint details attach to your application automatically. Tell us what you want your avatar to do, and we'll walk you through what's realistic in two weeks. You can also email contact@fssn.co and mention Lemonslice. Curious about the platform itself? It lives at lemonslice.com.
Apply here