Built with the leading voice ecosystem
The full stack
One API, one contract
Models, telephony, and compliance under a single agreement.
Model flexibility
30+ low-latency models. Run a different model per language and switch mid-deployment.
Regional compliance
HIPAA compliant. GDPR compliant. ISO 27001 certified. SOC 2 Type II in audit.
Automatic failover
Providers go down at 2am. Your calls don't.

Continuous optimization
Every turn, every call, no pipeline code.
PII redaction
Names, numbers, and identifiers stripped before audio reaches your models or logs.
TTS path optimization
Repeated TTS responses served from cache. Provider never gets called.
Context routing
Simple turns stay local. Complex turns hit your LLM. Fewer model calls per conversation.
Automatic failover
A provider degrades mid-call, the next turn goes elsewhere.
Transcripts
Region, provider, model, cost, latency. Logged per step, per call.
Analytics
Cost and latency tracked against baseline. Dashboard shows the delta.
Full-stack agent execution
30+ STT and TTS models. Add models without redeploying.

Deepgram Nova 3
Low-latency transcription for live voice agents, captions, and interactive systems. 30+ languages.

Soniox STT AI
Transcribes and translates 60+ languages from recorded files or live audio streams.

Reson8 Resonant 1
Adapts to domain-specific vocabulary in real time. No fine-tuning required. Built for European languages.

Rime Arcana 3
Provides industry leading latency, enabling natural back-and-forth interactions without awkward pauses.

Cartesia Sonic 3
Streaming speech with voice cloning. Full control over pronunciation and accent.

Murf AI Falcon
Built for real-time voice. Low-latency streaming with consistent pronunciation across 20+ languages.

Soniox TTS RT
Handles the edge cases that break most production speech systems. Built-in safeguards against hallucination across 60+ languages.

Deepgram Aura 2
Real-time text-to-speech model built for conversational AI. Generates natural, human-like speech with low latency.
Compliance and security
How it works
Three steps from config to production agent
All data stays in your chosen region from call start to call end.
Configure
System prompt, model selection, call flow, tool integrations. All in the dashboard.
Connect
Plug in via SIP. Connect to your CRM, ticketing system, or knowledge base via API.
Ship and monitor
Real-time latency dashboards, call transcripts, and compliance audit logs.
Do I need an orchestrator?
No. Managed Agents replaces the pipeline entirely. You configure system prompts, models, call flows, and regions in the dashboard, the Execution layer handles routing, failover, and optimization underneath.
How do I connect Managed Agents to my systems?
Telephony comes in via SIP - Twilio, Telnyx, or your own trunk. Your CRM, ticketing system, or knowledge base connects through tool integrations via API. Configure, connect, ship. No pipeline code.
Does my voice AI data stay in-region?
Yes. Audio processed in a region stays in that region. Data residency is enforced at the routing layer, not promised in documentation. Every call is logged with region, provider, model, and timestamp. SLNG is ISO 27001 certified, HIPAA compliant, and GDPR compliant.
Is SLNG compliant with GDPR?
GDPR compliant. ISO 27001 certified. HIPAA compliant. SOC 2 Type II in audit. Details at trust.slng.ai.
How do I select a region?
One header: X-Region: ap-south-1. Add it to any API call. Same endpoint, same models, different physical location. No DNS changes, no separate deployments.
Which models are supported?
30+ models across STT, TTS, and LLM. Providers include Deepgram Nova 3, ElevenLabs, Cartesia Sonic, Soniox, Rime Arcana, Sarvam, and Whisper. Models are available as SLNG Hosted, SLNG Proxied, or BYOK. Full catalog at docs.slng.ai/models.
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