Reson8
Category: Voice / Speech AI
Hyper-customisable automatic speech recognition (ASR) platform built for European languages and regulated industries Reson8 was founded in 2025. The company is led by Raoul Ritter. Based in Amsterdam, Netherlands. Team size: 11-50. Total funding raised: $5.5M. Latest round: Pre-Seed. Key investors include Balderton Capital, NP Hard.
- Founded
- 2025
- Headquarters
- Amsterdam, Netherlands
- Team size
- 11-50
- Total funding
- $5.5M
Value proposition
Reson8 provides infrastructure-grade, hyper-customisable speech recognition that adapts to domain-specific vocabulary and European languages in seconds using lightweight modular adapters, without requiring audio data or fine-tuning. Built on EU-native infrastructure with zero audio retention for regulated workflows.
Products and solutions
Hyper-customisable ASR platform with real-time domain adaptation (up to 1M tokens of context, <60s adaptation), text-based adaptation without audio data or fine-tuning, EU-native GPU infrastructure with zero audio retention, supports streaming, voice agents, and batch transcription, industry-specific engines for healthcare (50,000+ medical terms), legal, finance, automotive, and customer service
Unique value
Europe-first speech AI with real-time text-based domain adaptation (no audio data needed, no fine-tuning), EU-hosted infrastructure with full data residency control, and modular pluggable adapters that achieve 10% lower Word Error Rate vs generic engines without adding latency
Target customer
Enterprises and organizations in regulated industries (healthcare, legal, finance, customer support, automotive) that need accurate, low-latency speech recognition for European languages with EU data sovereignty
Industries served
Healthcare, Legal, Finance, Customer Support, Automotive
Technology advantage
Proprietary lightweight modular adapter architecture that adapts ASR models in real-time using contextual data (documents, websites, calendars); text-only domain adaptation up to 1M tokens without audio datasets; EU-native GPU infrastructure with zero audio retention; purpose-built for European languages (20+ languages at launch); production-first approach from founders with experience in high-frequency trading (IMC), healthcare speech (Juvoly), and large-scale AI systems (Adyen)
How they differentiate
Unlike US-centric competitors (Deepgram, AssemblyAI) that rely on US hyperscaler infrastructure, Reson8 is built and operated entirely on European-owned GPU infrastructure with full data residency control. Its text-based domain adaptation (no audio data required, no fine-tuning) enables customization in seconds vs weeks for competitors. The company prioritizes European languages and dialects over English-first approaches, and targets regulated industries where data sovereignty is critical.
Main competitors
Deepgram, AssemblyAI, Speechmatics, Gladia
Key partnerships
Balderton Capital (lead investor), NP Hard (co-investor)
Major milestones
March 2026: Raised €5M pre-seed led by Balderton Capital, Launched hyper-customisable ASR platform supporting 20+ European languages, Founded by team with prior exit (Juvoly acquired 2025/2026)
Market positioning
Europe-first challenger to US-dominated speech recognition market, positioning as the sovereign European alternative for regulated industries requiring high accuracy in non-English European languages with strict data residency requirements
Geographic focus
Europe (primary); 20+ European languages at launch
About Raoul Ritter
Ex-Adyen (AI and large-scale systems); Co-Founder & CEO of Reson8
Latest news about Reson8
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Official website: https://www.reson8.dev/