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Mirelo AI

Category: Voice / Speech AI

A Berlin-based AI startup that generates synchronized sound effects and music for silent videos using advanced foundation models. Mirelo AI was founded in 2023. The company is led by Carl Johann Simon-Gabriel. Based in Berlin, Germany. Team size: 10. Total funding raised: $44.0M. Latest round: Seed round ($41.0M, Dec 2025). Key investors include ["Index Ventures","Andreessen Horowitz (a16z)","Atlantic Labs","TriplePoint Capital"].

Founded
2023
Headquarters
Berlin, Germany
Team size
10
Total funding
$44.0M

Value proposition

Transforms silent videos into immersive experiences by generating custom, perfectly synchronized sound effects and music in seconds, with superior quality and 50x less compute than typical LLMs

Products and solutions

["Mirelo SFX v1.5 AI model for video-to-sound effects","Mirelo Studio web-app interface for creators","Self-serve API for embedding video-to-sound capabilities","Video-to-audio generation platform with multiple soundtrack variants"]

Unique value

Specialized foundation models for audio in visual media, addressing the 'silent problem' in AI-generated video; founded by musicians-turned-AI researchers from AWS, Google Brain, Meta FAIR, and leading institutions; combines deep AI research with musical expertise

Target customer

Prosumers, content studios, gaming companies, and advertising agencies needing scalable AI-driven audio solutions

Industries served

["Video Production & Content Creation","Gaming & Interactive Media","Advertising & Marketing","Social Media & Entertainment","AI-Generated Video Platforms"]

Technology advantage

Lightweight models delivering 50x less compute than LLMs while maintaining top-tier audio quality; real-time synchronized sound generation; ethical approach using public/purchased sound libraries with artist-respecting revenue-sharing partnerships

How they differentiate

Specialized focus on synchronized sound effects for video with lightweight foundation models delivering 50x less compute than LLMs while maintaining superior audio quality, founded by musicians-turned-AI researchers from top institutions

Main competitors

["Sony","Tencent","Kling AI (Kuaishou)"]

Key partnerships

["fal.ai platform integration","Replicate platform deployment","Revenue-sharing partnerships with sound libraries and artists","Exploring integrations with video editing software companies","GMI Cloud for AI/ML infrastructure (22-50% faster model training)"]

Notable customers

["Individual creators","Small content studios","Companies integrating video-to-sound via API"]

Major milestones

["Founded in 2023 by musicians-turned-AI researchers from AWS, Google Brain, Meta FAIR","Launched Mirelo SFX v1.5 video-to-sound-effects model with API and Mirelo Studio web app","Integrated with platforms like fal.ai and Replicate for broader distribution","Closed $41M seed round co-led by Index Ventures and Andreessen Horowitz in Dec 2025","Private beta launch scheduled for end-of-February 2026"]

Growth metrics

Team of 10 people, private beta launching end-of-February, Mirelo SFX v1.5 achieving 68.3% win rate against competitors, expanding from individual creators to enterprise API customers

Market positioning

Early-stage AI audio foundation model company targeting the 'silent problem' in AI-generated video, serving prosumers, content studios, gaming companies, and advertising agencies

Geographic focus

Global market with headquarters in Berlin, Germany, serving North American, European, and Asia-Pacific markets

Patents and IP

No registered patents or public IP disclosures as of latest update

About Carl Johann Simon-Gabriel

AI researcher with 10+ years experience, PhD in machine learning from Max Planck Institute, postdoc at ETH Zurich, former AI scientist at Amazon AWS AI labs and Meta FAIR, background in music and sound design

Official website: