Agents that sound human. Results that aren't.
Six STT providers, nine TTS engines, eight LLM backends. Bring your own numbers or take calls in the browser. Streaming, interruption-safe, 24/7.
Latency
First response from caller silence to agent voice, cold start included - measured with scripted sim calls on every change.
Voice engines
Nine TTS engines with a deep voice library, plus cloning to build a voice that is yours alone.
Concurrency
Every agent takes overlapping calls - hundreds of concurrent lines per organization. No busy signal, ever.
Uptime
Automatic provider failover. If a provider degrades, the pipeline reroutes before the caller notices.
What a call sounds like.
An example transcript of a representative outbound SDR call - what the agent does on the phone: tone, objection handling, and transfer-on-intent.
- Knowledge-grounded. The agent reads the prospect's CRM record and your pricing page before it speaks.
- Transfer-on-intent. When the prospect says "I want to talk to a human," they're transferred - with full context already passed.
- Auto-logging. Transcript, intent classification, deal stage update written before the call ends.
- Interruption-safe. The agent stops talking the moment the caller starts. No "as I was saying."
Design call logic on a node-based canvas - subagents, transfers, logic splits, per-node knowledge. Versioned and testable.
Explore the builderSimulated callers, scored test sets, scheduled regressions, alerts, and call traces - prove the agent before it takes a real call.
Explore testingSwap providers per agent.
Different agents have different needs. Your support agent might want Deepgram + Cartesia + Claude for warmth and recall. Your SDR might want OpenAI Realtime + ElevenLabs + GPT for speed.
Telnyx+ BYO SIP trunk · browser callsWhere voice agents earn their keep.
Answer every call - including the 11pm ones. Qualify, route to human on intent, book on the calendar.
Run sequences with a calling step. The agent dials, reaches the prospect, qualifies, and books a human follow-up.
Reduce no-shows. The agent calls confirmations, reschedules, takes payment authorization.
Knowledge-grounded answers to FAQs, account lookups, status checks. Escalates to a human on emotion or complexity.
For high-volume inbound forms. The agent calls within 90 seconds of submission, qualifies, and writes the deal.
Lapsed customers, churned subscribers, expiring contracts. The agent calls with a one-time offer and books a save.
Your first agent. Today.
Spin up a voice agent in fifteen minutes. We'll route a phone number, hand you a template, and stand back.