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Features

Why Burki delivers what other platforms promise: While vapi.ai struggles with 4-5 second latency and broken UIs, Burki provides a complete, production-ready platform with 0.8-1.2 second response times and interfaces that actually work.
Real User Experience: “I was a vapi.ai power user for 2.5 years. The UI never worked properly, latency was terrible (4-5 seconds), and their recent pricing changes would cost my startup $800/month. With Burki, I get sub-second response times and complete control over my costs.”

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Core Voice AI Capabilities

  • Multi-Provider Telephony: Support for both Twilio and Telnyx with automatic provider selection per assistant.
  • Speech-to-Text: Real-time transcription using Deepgram Nova 3 with confidence scoring.
  • Natural Language Processing: Generate intelligent responses with OpenAI GPT models or custom LLM providers.
  • Text-to-Speech: Convert responses to natural speech with ElevenLabs, Deepgram, Inworld, or Resemble.
  • Audio Denoising: Built-in RNNoise integration for crystal-clear audio quality.
  • Call Recording: Automatic recording with transcription storage and metadata tracking.
  • Live Transcript Streaming: Real-time WebSocket streaming of call transcripts for monitoring and analytics.
  • SMS & MMS Messaging: Send text messages and multimedia content through your assistants with multi-provider support.

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Multi-Assistant Management

  • Multiple AI Assistants: Configure different assistants with unique personalities and settings.
  • Phone Number Assignment: Assign specific assistants to different phone numbers.
  • Database-Driven Configuration: Store and manage assistant configurations dynamically.
  • Real-time Assistant Loading: Hot-reload assistant configurations without restart.

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SMS & MMS Messaging

  • Multi-Provider SMS: Send messages through Twilio or Telnyx based on assistant configuration.
  • Multimedia Support: Send images, documents, and other media files via MMS.
  • Assistant-Based Routing: Messages automatically use the correct provider for each assistant.
  • E.164 Validation: Automatic phone number format validation for reliable delivery.
  • Delivery Tracking: Receive message IDs and delivery status from telephony providers.
  • Integration Ready: Easy-to-use REST API for sending messages from your applications.

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Phone Number Management

  • Search & Discovery: Find available phone numbers from Twilio and Telnyx with advanced filtering by area code, locality, and patterns.
  • Direct Purchase: Buy phone numbers instantly through the API with automatic webhook configuration and assistant assignment.
  • Multi-Provider Support: Purchase and manage numbers from both Twilio and Telnyx in a unified interface.
  • Cost Comparison: Compare pricing between providers for the same region to optimize costs.
  • Global Coverage: Access phone numbers in 60+ countries worldwide with local presence capabilities.
  • Inventory Management: Centralized dashboard to track usage, costs, and assignment across all providers.
  • Release Management: Release unused numbers to reduce monthly costs with automatic cleanup.
  • Bulk Operations: Purchase or release multiple numbers simultaneously for scaling operations.

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Web Dashboard & Management

  • Modern Web Interface: Beautiful, responsive dashboard for managing your voice AI system.
  • Real-time Analytics: Advanced call statistics, success rates, and performance metrics.
  • Call Management: View call history, transcripts, and recordings through the web interface.
  • Assistant Configuration: Create and manage assistants through an intuitive web UI.
  • User Profile Management: Comprehensive user and organization management.

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Authentication & Security

  • Multi-tenant Architecture: Support for multiple organizations with isolated data.
  • Google OAuth Integration: Seamless authentication with Google accounts.
  • API Key Management: Generate and manage API keys for programmatic access.
  • Session Management: Secure session handling with JWT tokens.
  • Role-based Access Control: User roles and permissions system.

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Advanced Audio Processing

  • Real-time Noise Reduction: RNNoise integration for superior audio quality.
  • Voice Activity Detection: Smart silence detection and speech processing.
  • Audio Format Support: Support for various audio formats with automatic conversion.
  • Recording Quality Enhancement: Post-processing tools for improving recording quality.

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Tools & Custom Actions

  • Built-in Call Tools: Call transfers, graceful call endings, and essential call management actions.
  • Endpoint Tools: Make HTTP requests to external APIs during conversations for CRM lookups, database queries, and third-party integrations.
  • Python Function Tools: Execute custom Python code with access to popular libraries for calculations, data processing, and business logic.
  • AWS Lambda Tools: Trigger serverless functions for scalable processing, machine learning inference, and complex workflows.
  • Tool Library: Create reusable tools that can be assigned to multiple assistants across your organization.
  • Real-time Execution: Tools execute during conversations with built-in timeout protection and error handling.
  • Sandbox Security: Python functions run in secure, isolated environments with resource limits.
  • Usage Analytics: Track tool performance, success rates, and execution times across all assistants.

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API & Integration

  • RESTful API: Comprehensive REST API for all system operations.
  • WebSocket Support: Real-time communication for live call handling and transcript streaming.
  • Webhook Support: Configurable webhooks for call events and notifications.
  • Custom LLM Support: Integrate with various LLM providers beyond OpenAI.
  • Live Transcript API: WebSocket endpoint for real-time transcript monitoring and analytics.