Rayon Raises €10M to Build AI Design Layer

The big picture: Paris-based Rayon, a browser-based drawing software for interior designers, has raised €10 million in Series A funding.

Why it matters:

• Underserved Market: The interior design sector has long relied on generic software, often retrofitted from architectural tools, creating a demand for purpose-built solutions.
• AI Integration: Rayon is uniquely positioned to embed AI directly into the design workflow, offering a competitive advantage by avoiding bolt-on AI features.
• Efficiency Gains: Customers like Virgin Atlantic, CityHub, and Coloc Housing report significant cost savings and streamlined operations by using Rayon for feasibility studies and layout planning.

How it works:

• Collaborative Platform: Rayon provides a shared browser environment for plans, styling, specifications, and schedules, enabling simultaneous editing and easy sharing via links.
• Data-Driven Design: The platform ensures consistency by automatically updating specifications as drawing changes occur, integrating data directly with the visual design.
• Advanced AI Capabilities: Current features include a floor plan vectorizer and block generator from photos, with a full suite of AI and 3D capabilities planned for its upcoming version 4 release.

The catch: Rayon faces competition from established CAD software providers and the challenge of maintaining high performance for advanced AI and 3D features within a browser environment. Successfully capturing market share will depend on its ability to deliver on its AI promises and differentiate in a fragmented design software market.

Key Facts

• Company: Rayon
• Amount: €10M
• Round: Series A
• Investors: Partech (lead), Northzone, Foundamental, Seedcamp
• Founders: Bastien Dolla, Stanislas Chaillou
• Announced: 2026-09-01
• Sector: Interior Design Software
• Headquarters: Paris, France