Bolna AI Updates for September, 2025

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Phone Number Compliance Application Requirement

• Introduced mandatory compliance application process for purchasing phone numbers on Bolna platform
• Users must now submit business verification documents before purchasing dedicated phone numbers:
  • CIN (Corporate Identification Number) certificate
  • GST registration details and certificate
• One-time application with 12-24 hour review process
• Enhanced security and regulatory compliance for telecommunications services
• Learn more:
  • Compliance Requirements Overview - Understand why compliance is required and what documents you need
  • Step-by-Step Submission Guide - Complete walkthrough of the application process

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Added Anthropic support for LLM

• Support for the following Anthropic models. Learn more about Anthropic models from their official website.
  1. claude-sonnet-4

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Added Sarvam and AssemblyAI transcriber support

• Sarvam transcriber for Speech to Text (STT) capabilities with 11 Indian languages including English, Hindi, Bengali, Tamil, Telugu, Kannada, Malayalam, Marathi, Gujarati, Punjabi, and Odia.
• AssemblyAI transcriber for Speech to Text (STT) capabilities with real-time English streaming capabilities

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Concurrency model at sub-account scope

• Concurrency limits can now be configured at the sub-account level, allowing multiple calls or batches to run in parallel instead of being queued one after another. See how to configure concurrency when creating a sub-account in the (API doc)

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Batch Webhook Notifications

• Users can now attach a webhook URL to a batch at upload time. When the batch status changes — processed, scheduled, queued, running, completed or stopped, webhook updates will be sent automatically to track the progress of batches in real time.

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Voice AI Agents Template Library

• Recruitment Voice AI agent
• Customer Support Voice AI agent
• Cart Abandonment Voice AI agent
• Lead Qualification Voice AI agent
• Onboarding Voice AI agent
• Front Desk Voice AI agent
• COD Confirmation Voice AI agent
• Announcements Voice AI agent
• Reminders Voice AI agent
• Surveys Voice AI agent
• Property Tech Voice AI agent
• Dentist Appointment Voice AI agent
• Salon Booking Voice AI agent
• Weekend Planner Voice AI agent
• Sales Credit Card Voice AI agent
• Sales Loans Voice AI agent

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API Updates

• Cumulative view of all sub-account usage (API doc)

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API Updates

• Outbound calls in queued or scheduled state can be stopped before executions (API doc)

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Passing headers in Custom Function tools

• Passing custom headers is now supported on function tooling.

Function tool example with headers