SLNG.ai
Category: Voice / Speech AI
The first radically global infrastructure for speech AI that integrates every model and every region with orchestrated compute and built-in compliance SLNG.ai was founded in 2025. The company is led by Luke Miller. Based in Barcelona, Spain. Team size: 11-50. Total funding raised: €3.3M. Latest round: Pre-Seed. Key investors include Earlybird Venture Capital, StepFunction, a16z scouts.
- Founded
- 2025
- Headquarters
- Barcelona, Spain
- Team size
- 11-50
- Total funding
- €3.3M
Value proposition
Provide a non-US-centric speech AI infrastructure that supports a wide variety of global languages and accents with built-in compliance and regional compute
Products and solutions
Speech-to-Text API, Text-to-Speech API, Voice Cloning, Speech Diarization, Multi-region deployment, Compliance management
Unique value
Focus on creating high-quality speech AI models for languages and accents underserved by major US-based technology companies; model-agnostic platform with 15 sovereign regions
Target customer
Developers, startups, and enterprises building voice AI applications that require support for global, non-US-centric languages and accents
Industries served
Technology, Customer Service, Media, Healthcare, Finance, Any industry requiring multilingual voice AI capabilities
Technology advantage
By specializing in diverse global languages from the outset, SLNG.ai aims for better accuracy for non-English use cases, targeting markets neglected by larger competitors
How they differentiate
Emphasis on non-US-centric language coverage, built-in compliance, multi-region deployment (60+ regions), and model-agnostic approach
Main competitors
ElevenLabs, Deepgram, OpenAI Whisper, Cartesia
Key partnerships
Earlybird Venture Capital (lead investor), Multiple speech model providers (OpenAI, ElevenLabs, Deepgram, Cartesia, Sarvam, Rime), LiveKit (native plugin), Pipecat
Notable customers
Ixigo (India's second-largest online travel agent)
Major milestones
Raised €3.3M in pre-seed funding round (October 2025), Built infrastructure supporting 11 sovereign regions, Integrated multiple speech models (OpenAI, ElevenLabs, Deepgram, Cartesia, Sarvam, Rime), Founded in Barcelona, Spain, Became native plugin in LiveKit Agents, Achieved ISO/IEC 27001:2022 certification, Won Ixigo as customer (India's 2nd largest OTA)
Growth metrics
Not publicly disclosed
Market positioning
Early-stage Barcelona-based startup positioning itself as a global alternative in speech AI focused on multilingual accuracy and compliance
Geographic focus
Global, headquartered in Barcelona, Spain with 15 sovereign regions worldwide
Patents and IP
No public patent information available
About Luke Miller
Previously at npm, Vercel (first seller, built international business), and venture partner at Earlybird VC; also at Baseten
More Voice / Speech AI companies
Official website: https://www.slng.ai/