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Deepslate Realtime is a platform for building and deploying voice AI at scale. Power inbound call handling with Assistants or automate outbound campaigns with Agents — all backed by Opal, our end-to-end speech-to-speech model.

Voice AI Resources

Assistants

Inbound voice AI that answers calls to your phone numbers. Configure behavior with system prompts, greetings, and integrations.

Agents

Outbound voice AI that proactively calls customers. Assign tasks with dynamic data for personalized conversations.

Resource Hierarchy

Voice AI for handling inbound calls. When someone calls your phone number, an assistant answers and handles the conversation.Configuration options:
SettingDescription
System promptDefine the assistant’s role and behavior
GreetingInitial message when answering a call
LLM extensionsAdd capabilities like knowledge base search
Call event hooksTrigger webhooks on call events (e.g., transcript ready)
Voice AI for making outbound calls. Agents proactively call customers based on assigned tasks.Configuration options:
SettingDescription
System prompt templateDefine the agent’s role with dynamic variables
User value typesDefine data fields for each call (customer name, order ID, etc.)
LLM extensionsAdd capabilities like CRM lookups
Call event hooksTrigger webhooks on call events
Individual outbound call tasks assigned to agents. Each task contains:
  • Target number — The phone number to call
  • User values — Key-value pairs with call-specific data (e.g., customer name, callback reason)
Tasks are processed by agents and can be created via the API for automated campaign workflows.

Next Steps

API Reference

Explore the REST API for managing resources programmatically