Mirelo AI

Mirelo AI generates sound effects, Foley, ambient audio, and music synced to your video, right from an upload or inside editors like Premiere and DaVinci. Built by a German audio-AI lab, it raised a reported 41 million dollar seed led by Index Ventures and a16z.

Mirelo AI is a sound-generation platform that analyzes a video scene by scene and produces sound effects, Foley, ambient audio, and music synced to what is on screen, so creators can add believable sound to footage without hunting through stock libraries. Built by Mirelo AI GmbH, a German audio-AI lab, it targets a real gap: AI-generated and quickly edited video is often silent, and Mirelo aims to unmute it in seconds. The product centers on Mirelo Studio, which includes an Editor that generates SFX from video, an Extender that lengthens a sound naturally, an Ambiencer that builds loopable soundscapes from a text prompt, and an Inpainter that cleanly removes clicks, hiss, or stray noises. Beyond the web app, Mirelo ships plugins for Adobe Premiere Pro, DaVinci Resolve, and Roblox, a developer API (Mirelo SFX), and an MCP integration that lets tools like Claude, ChatGPT, and Cursor generate sound effects directly. Mirelo raised a large seed round reported at 41 million dollars, led by Index Ventures and Andreessen Horowitz, which is unusual for an audio startup and signals serious backing. It is aimed mainly at video creators, editors, and prosumers, with a freemium model. As with any generative-audio tool, results vary by footage and prompt, and commercial-use and licensing terms are worth confirming, so treat vendor claims as claims and verify current pricing and rights on Mirelo's site before relying on it for paid work.