27th Sep, 2025

Added Anthropic support for LLM

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
24th Sep, 2025

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)

Features

  • 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, updates will be sent to the webhook to track the progress of batches in real time.
Voice Lab clone voices feature interface in Bolna showing one-click voice cloning with audio sample upload
11th Sep, 2025

API Updates

  • Cumulative view of all sub-account usage (API doc)
9th Sep, 2025

API Updates

  • Outbound calls in queued or scheduled state can be stopped before executions (API doc)
8th Sep, 2025

Passing headers in Custom Function tools

Passing custom headers in your custom functions

Function tool example with headers