tech

December 15, 2025

Mirelo raises $41M from Index and a16z to solve AI video's silent problem

Mirelo, a German startup that is building AI to add synced sound effects to videos, has raised a $41 million seed round led by Index Ventures and Andreessen Horowitz.

Mirelo raises $41M from Index and a16z to solve AI video's silent problem

TL;DR

  • Mirelo is building AI that adds synchronized sound effects and soundtracks to videos.
  • The startup recently released Mirelo SFX v1.5, an AI model for generating sound effects.
  • Mirelo raised $41 million in seed funding, led by Index Ventures and Andreessen Horowitz.
  • The new capital will be used for hiring, R&D, and product development, including Mirelo Studio.
  • Mirelo's models are based on public and purchased sound libraries, with revenue-sharing partnerships to respect artists' rights.
  • The company targets amateurs and prosumers with a freemium model, with a creator plan at €20/month.
  • Mirelo plans to add AI music generation to its roadmap.
  • The startup has received backing from notable figures in the AI industry.

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