Powering the best enterprises, creators, and developers. From autonomous Voice Agents for customer experience, Creative Voice Studio for real-time synthesis, to carrier-grade telephony.
Ultra-low latency conversational voices with instant barge-in support.
Back office operations
Internal agent assist for reconciliation, exception handling, and compliance workflows — grounded in your own SOPs.
Live demo — responses come from the STL agent and are grounded in your SOPs.
The stack
Built for low latency, long-context reasoning, and efficiency at scale — one platform for transcription, synthesis, and production voice agents.
Streaming transcription tuned for Indian English, regional accents, and noisy telephony audio.
Natural, real-time voice synthesis across multiple languages, voices, and emotional styles.
Architecture
STL ASR
Speech-to-text
Agent Config
Choose your LLM
STL TTS
Text-to-speech
LLM
API
Guardrails
Tools
In practice
A caller should reach a resolution, not a queue. Most issues can be handled end-to-end, with a human brought in only when the case genuinely needs one.
How STL does it
Across 121 production calls, 118 were resolved by the agent without a human transfer — only 3 escalations.
Multilingual
Supported locales
Enterprise-grade
Call audio and API traffic are served over TLS; media streams stay inside the session.
Runs on your GCP project and compute — data stays within infrastructure you control.
Per-client API keys and tokens gate every programmatic call to the platform.
Operator access to the console is gated behind Google sign-in, not open to the public.
Every call, transcript, and auto-created ticket is logged and retained for review.
Deploy the same stack in the cloud or inside your own network for data-residency needs.
Aarohi
Deepak
Radhika
Gaurav
Alloy
Hope
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Built with a best-in-class voice & telephony stack