Berlin-based ai-coustics develops real-time speech enhancement technology for the voice AI era. Its flagship product, Quail, cleans and enhances speech in real time to boost automatic speech recognition accuracy, voice activity detection, and the reliability of voice agents and conversational AI. The platform processes millions of minutes weekly across 187 countries and 150+ languages and is used by companies including PolyAI, Synthesia, and Elgato. In 2025 the company raised a 5M euro seed round led by Partech to scale its developer platform and bring studio-quality sound to voice AI systems.
ai-coustics
ActiveReal-time speech enhancement that makes voice AI work at scale
Total raised
$5.4M
1 round
Stage
Seed
Team
11-50
since 2021
Pricing
Freemium
free plan
Founded
2021
Berlin, Germany
Agent-ready
API
Score 55/100
Real-time speech enhancement (Quail)
Noise and reverb removal for clearer speech
Improves ASR accuracy for voice agents
Voice activity detection support
Developer platform with free tier
Low-latency streaming processing
Supports 150+ languages
Scales to millions of minutes weekly
55/100
Developing
MCP server
Public API
Webhooks
OAuth 2.0
SDKs
— Seed $5.4M incl. Acurio Ventures +3
Capital network
$5.4M raised ·4 backers·7 network links
- Backers4
- Shared portfoliocompanies these backers also fund
- Extended networkfunds that co-invest alongside them
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Typecast
Emotionally expressive AI voices and virtual actors
AI Voice & SpeechAI Digital Humans
Rylo
Real-time AI captioning and text-to-speech for deaf and hard-of-hearing users
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Prosper AI
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AI Voice & SpeechAI Healthcare
- What does ai-coustics do?
- It provides real-time speech enhancement that improves audio clarity and the accuracy of voice AI systems.
- Who uses ai-coustics?
- Voice AI and media companies including PolyAI, Synthesia, and Elgato.
- Where is ai-coustics based?
- It is headquartered in Berlin, Germany.
- How much has ai-coustics raised?
- It raised a 5M euro seed round led by Partech in 2025.
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