Mirelo raises $41 million to solve AI video’s silent problem

Team S · 2025-12-23T12:26:07.000Z

Mirelo, a Berlin-based generative AI startup focused on adding high-quality, synchronised audio to AI-generated videos, has raised $41 million in a funding round to accelerate development of its audio-first video technology and expand its global footprint. The company is addressing a key gap in today’s AI video ecosystem, where visuals are advancing rapidly but sound often remains missing or poorly integrated. The round was co-led by Index Ventures and Andreessen Horowitz (a16z), with additional participation from Atlantic.vc and TriplePoint Capital. The financing also included backing from a strong group of high-profile angel investors from the AI and developer ecosystem, including Arthur Mensch, CEO of Mistral, Thomas Wolf, co-founder and CSO of Hugging Face, and Burkay Gur, co-founder of Fal.ai, among others. Founded in 2023 by CJ Simon-Gabriel and Florian Wenzel, Mirelo develops models that automatically generate sound effects, ambience and soundtracks that are contextually aligned with video content. With the new capital, the company plans to scale its research and engineering teams, further develop its core models, and expand access to its products, including Mirelo Studio and its API, as it positions itself as a foundational layer for the next generation of AI-powered video creation. #AI #Funding #VentureCapital #GenerativeAI #Mirelo #IndexVentures #AndreessenHorowitz #AtlanticVC #TriplePointCapital

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Mirelo raises $41 million to solve AI video’s silent problem | Newnex