SLNG is a voice AI infrastructure company building an execution layer that sits between voice-agent orchestrators and the underlying speech/LLM models, handling model routing, regional compute across 11 sovereign hubs, failover, PII redaction and compliance to cut latency and cost. Founded in 2025 by former Vercel and npm go-to-market lead Luke Miller (who describes the product as 'the Vercel for voice agents') and Ismael Ordaz Reyes, it is model-agnostic across 30+ providers including OpenAI, Anthropic, Deepgram and ElevenLabs, and is HIPAA/ISO 27001/GDPR compliant with SOC 2 Type II in progress. Its office is in Barcelona, and it is registered in the UK as Slng Ltd while operations remain Barcelona-based.
SectorsVoice AI, AI Infrastructure, Developer Tools, Speech Recognition, Enterprise Software
Start-up MapAI & Data › AI data infrastructure
Founders
I
Ismael Ordaz Reyes
Co-founder & CPO (product and engineering)
L
Luke Miller
Co-founder & CEO
Global models 5
LLiveKit
United States · livekit.io ↗
Open-source-led real-time voice infrastructure that sits under voice-agent builders, handling transport, global edge compute and model plumbing on a usage-based cloud.
$183MComparable
DDaily
United States · www.daily.co ↗
Developer infrastructure for real-time voice agents (Pipecat plus a global WebRTC cloud) that is model-agnostic across STT, LLM and TTS providers and billed on usage.
$62MComparable
OOpenRouter
United States · openrouter.ai ↗
Model-agnostic routing layer across hundreds of LLM providers, with failover and cost and latency optimisation, taking a cut of developers' usage.
$40MComparable
VVapi
United States · vapi.ai ↗
Usage-priced developer platform for voice agents that routes across interchangeable speech and LLM providers and handles latency, scaling and compliance.
$25MComparable
PPortkey
United States · portkey.ai ↗
AI gateway that sits between applications and 200+ model providers, offering routing, fallbacks, guardrails, PII redaction and governance to enterprises.
$18MComparable
In the same niche 31 others
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Notes: Most funded first
Investors 3
Open as list →
Funding rounds 1
| Date | Round | Amount | Lead |
|---|---|---|---|
| 2025-10-15 | Pre-seed | €3.3M |
Earlybird VC
+2 more
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News 6
Open as list →| Published | Article |
|---|---|
| 2026-09-28 |
Dealflow #528: Trebellar raised $18M. Clarity AI merges. Indexa hits €6B in AUM. ↗
Dealflow.es Newsletter
2026-09-28 |
| 2026-08-17 |
How SLNG powers Indic voice AI at scale with Sarvam ↗
Sarvam AI
2026-08-17 |
| 2026-07-16 |
When more AI means worse AI ↗
Earlybird Venture Capital
2026-07-16 |
| 2026-05-18 |
Former Vercel executive says voice agents will be won on infrastructure, not models ↗
Tech.eu
2026-05-18 |
| 2025-11-28 |
SLNG, la revolución de la IA que habla desde Menorca ↗
Última Hora
2025-11-28 |
| 2025-10-15 |
SLNG.ai raises €3.3M to build global voice AI infrastructure to challenge US dominance ↗
Tech.eu
2025-10-15 |