Lemon Slice just raised $10.5M seed from Matrix Partners, YC, and The Chainsmokers for AI avatars that actually work.

What it is: Real-time interactive video avatars from a single photo. 20B-parameter model running 20fps on single GPU.

• Founded 2024 by 3 PhDs (Lina Colucci, Sidney Primas, Andrew Weitz)
• Built proprietary video diffusion transformer (not just face-swapping)
• API + embeddable widget (1 line of code integration)
• Works for human + non-human characters
• 8-person team, targeting education/e-commerce/training

How it happened:
• Started in YC experimenting with video models
• Realized interactive video was the missing layer for AI agents
• Built end-to-end diffusion model vs. piecemeal solutions
• Focused on solving "uncanny valley" problem competitors ignore
• Launched with both API and no-code widget for fast adoption
• Secured high-profile angels (Dropbox CTO, Twitch CEO)

Link: https://www.finsmes.com/2026/01/lemon-slice-raises-10-5m-in-seed-funding.html

Takeaway: Video avatars failed before because they were creepy. Build the foundational tech right, and distribution follows.

Source: FinSMEs

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