Mirelo Announces $41 Million Seed Round, Aims ‘To Become the Audio Layer for All Visual Content Across Videos, Gaming, Social Media, Films and Beyond’

Mirelo founders CJ Simon-Gabriel (left) and Florian Wenzel. Photo Credit: Mirelo

Less than three years after setting sail, audio startup Mirelo, which says it lets “anyone generate perfectly synchronized sound effects for videos,” has scored a $41 million raise.

Berlin-based Mirelo reached out with word of its Andreessen Horowitz- and Index Ventures-led seed round. Atlantic.vc (a Mimi Hearing Technologies and SoundCloud stakeholder) and Menlo Park-headquartered TriplePoint Capital also contributed to the sizable tranche.

Likewise supporting Mirelo: A number of angel investors, including but not limited to Google vet Yariv Adan, Fleet founder Alexandre Berriche, Meta AI scientist Léon Bottou, and OpenAI startups exec for EMEA Laura Modiano.

Established in 2023 “by two senior AI researchers who are also accomplished musicians,” CEO CJ Simon-Gabriel and CTO Florian Wenzel, the platform equips uploaded videos with matching audio “in a matter of seconds,” per higher-ups.

(The longtime AI scientist Simon-Gabriel is said to have a Conservatoire de Strasbourg degree in piano, organ, and composition; Wenzel, who met Simon-Gabriel while they were working at AWS Labs, is said to play “electric guitar as a member of an electro band in Berlin.”)

This matching audio, designed to improve on machine-made default sound that “rarely serves creative intent,” includes both effects and music. Two months back, the business officially launched Mirelo Studio, which has features such as variants (“uniquely generated multiple takes to get the perfect fit”), text-to-music support, and more.

Meanwhile, under the Studio hood, Mirelo debuted SFX v1.5, which the company says pumps out “soundtrack versions faster than real-time”; the startup’s models are said to require “50 times less compute than typical LLMs.”

Of course, the formal release behind an over $40 million funding round isn’t exactly objective. However, Mirelo did promptly equip a short (mostly silent) AI clip with suitable auto-generated audio (effects as well as music) when taken for a spin by DMN.

Presented with multiple generations to choose from, users can edit or delete individual audio elements via a central “tracks” section – besides, among other things, incorporating extra sounds or music, including for specific durations, if so inclined.

“Mirelo’s first step is about democratising access, empowering everyone to create the sound that their (AI) video deserves,” CEO Simon-Gabriel explained.

“But we’ll also empower professionals to rework audio, to do more of what they love, to be more expressive and imaginative in what they can achieve, while handling the boring stuff such as synchronization. Our bigger mission is to become the audio layer for all visual content across videos, gaming, social media, films and beyond,” the exec proceeded.

Given the AI space’s massive raises, runaway valuations, and many well-entrenched players, the audio sub-sector’s stiff competition goes without saying. On the other hand, the underlying tech behind Mirelo (and others) appears solid enough, and there’s definitely room for cash-flush AI giants to close acquisitions in 2026 and beyond.

And as certain AI behemoths reportedly grapple with revenue woes, there may be an opportunity for nimbler operations to make a splash by zeroing in on carefully tailored customer bases; Mirelo offers a free tier and monthly subscriptions ranging from €5 to €999.

Link to the source article – https://www.digitalmusicnews.com/2025/12/16/mirelo-seed-round/