7th July, 2025

2th July, 2025

Explore the latest features, improvements, and API updates introduced in July 2025 for Bolna Voice AI agents.

July, 2025

Bolna AI Updates for July, 2025

Quickly build and deploy conversational Voice AI agents

Bolna Docs

Create and deploy Conversational Voice AI Agents

Home

Learn how to create conversational voice agents with Bolna AI to qualify leads, boost sales, automate customer support, and streamline recruitment and hiring

Introduction

Bolna AI: Create and deploy Voice AI Agents

An overview of the various components that make up Bolna Voice AI agents, along with the key tasks these agents are designed to perform.

Platform Concepts

Explore practical tips and tricks to enhance the performance of Bolna Voice AI agents. Master best practices for effective implementation.

Prompting guide

Prompting & best practices for Bolna Voice AI agents

Browse Bolna's Voice AI agent templates for quick and efficient setup. Customize pre-built agents to create powerful, AI-driven voice agents seamlessly.

Agents Library

Learn how to import pre-built agents on the Bolna Voice AI platform

Import agents

Discover detailed insights into Bolna Voice AI's pricing structure. Learn about cost breakdowns and flexible plans tailored to your business needs.

Call Pricing

Bolna Voice AI usage pricing

Discover how different account tiers on Bolna Voice AI impact concurrency for outbound phone calls

Concurrency tiers

Account based concurrency tiers

Discover Bolna Enterprise solutions for large-scale businesses, offering scalable Voice AI agents, advanced integrations, and custom seamless solutions.

Enterprise plan

Bolna AI Enterprise Plan

On-prem deployments

Bolna AI On-Prem for Enterprise

Learn to write prompts using Devanagari for Hindi, accented Latin for French and Spanish, etc. for accurate pronunciation and natural responses with Bolna Voice AI agents.

Prompts for Non-English

Writing Prompts in Non-English Languages (Using Native Scripts)

Learn how to use function calling in Bolna Voice AI to automate complex workflows by integrating custom functions with your voice agents.

Function Calling in Bolna Voice AI: Automate Workflows with Custom Functions

Discover how to transfer live phone calls to human agents using Bolna Voice AI, enabling seamless integration and workflow automation.

Transfer calls

Transferring Live Calls Using Bolna Voice AI Agents: A Step-by-Step Guide

Learn how to integrate Bolna Voice AI with Cal.com to fetch real-time available calendar slots during live conversations.

Check calendar slots

Fetching Available Calendar Slots with Bolna Voice AI and Cal.com Integration

A comprehensive guide on how to book calendar slots during live calls using Bolna Voice AI integrated with Cal.com.

Book calendar slots

Booking Calendar Slots via Bolna Voice AI and Cal.com Integration

Learn how to design and integrate custom function calls within Bolna Voice AI agents to enhance their capabilities.

Custom function calls

Implementing Custom Function Calls in Bolna Voice AI Agents

Explore the list of providers supported by Bolna Voice AI, including integrations for telephony, transcription, and text-to-speech services to lower your costs

Connect Providers

Supported Providers for Bolna Voice AI

Easily import voices from multiple providers like ElevenLabs, Cartesia including custom voices into Bolna for seamless voice agent personalization.

Import Voices

Importing your voices to use with Bolna Voice AI

Learn how to effectively use context in Bolna Voice AI agents to create dynamic, personalized, and meaningful interactions

Adding variables

Using Context with Bolna Voice AI Agents

Access detailed insights into call logs and data with Bolna Voice AI. Learn how to analyze and utilize call details for better decision-making.

Extract Structured Data

Extract Structured Data from Conversations in Bolna Voice AI

Discover how to set guardrails for Bolna Voice AI agents, ensuring safe, reliable, and compliant interactions tailored to your business needs.

Implementing Guardrails

Implementing Guardrails for Bolna Voice AI Agents

Learn how to receive real-time call data updates from Bolna Voice AI using webhooks. Monitor and handle call scenarios effectively.

Add your server URL

Receive Bolna Voice AI call updates

Learn how to use your knowledgebases with Bolna Voice AI agents to provide accurate, context-aware, and data-driven responses for seamless interactions.

Using knowledgebases

Integrating Knowledgebases with Bolna Voice AI

Explore multi-agent prompt setups in Bolna Voice AI to enable dynamic conversations between multiple agents for advanced use cases.

Multi agent prompt

Creating Multi-Agent Prompts in Bolna Voice AI

Discover how Bolna Voice AI supports multiple languages. Enable global interactions with multilingual capabilities tailored to your audience.

Supported languages

Multilingual Language Support in Bolna Voice AI

Use Bolna Voice AI agents to identify callers in real time via API, CSV, or Google Sheets and personalize calls with automatic user data injection.

Identify incoming callers

Dynamically identify incoming callers

Integrate custom large language models (LLMs) into Bolna Voice AI to enhance agent capabilities and tailor responses to your unique requirements

Using custom LLMs

Using Custom LLMs with Bolna Voice AI

Bolna Voice AI enables to capture actual transcripts when the conversations involve interruptions to improve call accuracy and experience.

Capturing precise transcripts

Capturing precise transcripts in Bolna Voice AI

Purchase and manage phone numbers directly from Bolna's dashboard. Follow step-by-step instructions to secure numbers for your Voice AI agents.

Purchase phone numbers

Acquire Dedicated Phone Numbers through Bolna

Make outbound Voice AI calls with Bolna using default or dedicated phone numbers. Integrate telephony providers and automate calls via dashboard and APIs.

Making Outgoing calls

Make Outbound Calls Using Bolna Voice AI Agents

Set up Bolna Voice AI agents to answer incoming calls. Assign phone numbers, configure settings via the dashboard or API, and enhance customer interactions.

Receive Incoming calls

Handle Inbound Calls with Bolna Voice AI Agents

Learn how to schedule and manage batch calls using Bolna's Voice AI agents. Upload CSV files, set call parameters, and monitor execution for efficient outreach.

Batch Calling

Automate and schedule calls using Batches

Learn about the various type of call statuses associated with Bolna Voice AI conversations

List of call status

List of status for Bolna Voice AI calls

Frequently asked questions about Bolna AI

FAQs

Frequently Asked Questions

Access and analyze conversation logs, including call recordings, transcripts, and summaries, for your deployed Bolna Voice AI agents.

Agent executions

Use and leverage Bolna Voice AI using APIs through HTTP requests from any language in your applications and workflows.

Bolna API Documentation

Learn how to use pagination in Bolna Voice AI APIs using `page_number` and `page_size` to fetch results efficiently and build scalable workflows.

Pagination

Pagination in Bolna API

Integrate Bolna with your providers and services

Bolna Integrations

Bolna Voice AI Integrations

Build your custom workflows and applications using Bolna Voice AI integrations with popular automations tools like Make.com, Zapier and viaSocket

Using Bolna AI with No-code Tools

Explore the latest features, improvements, and API updates introduced in June 2025 for Bolna Voice AI agents.

June, 2025

Bolna AI Updates for June, 2025

Explore the latest features, improvements, and API updates introduced in May 2025 for Bolna Voice AI agents.

May, 2025

Bolna AI Updates for May, 2025

Explore the latest features, improvements, and API updates introduced in April 2025 for Bolna Voice AI agents.

April, 2025

Bolna AI Updates for April, 2025

Explore the latest features, improvements, and API updates introduced in March 2025 for Bolna Voice AI agents.

March, 2025

Bolna AI Updates for March, 2025

Explore the latest features, improvements, and API updates introduced in February 2025 for Bolna Voice AI agents.

February, 2025

Bolna AI Updates for February, 2025

Explore the latest features, improvements, and API updates introduced in January 2025 for Bolna Voice AI agents.

January, 2025

Bolna AI Updates for January, 2025

Explore the latest features, improvements, and API updates introduced in December 2024 for Bolna Voice AI agents.

December, 2024

Bolna AI Updates for December, 2024

Bolna AI: Create and deploy Voice Agents

Discover detailed insights into Bolna Voice AI agents and their pricing structure. Learn about the offerings, inclusions and add-ons provided with each agent.

Agent Pricing

Bolna Voice AI agent pricing

Bolna Enterprise

Scalable Voice AI Solutions for Large Businesses

Agent templates

Connect your Providers

Understanding call details

Understanding Call Details in Bolna Voice AI

Explore function calling capabilities in Bolna Voice AI. Automate complex workflows by integrating custom functions with your voice agents.

Function calling

Function Calling with Bolna Voice AI Agents

Integrating knowledgebases

Polling for call status

Using webhooks for call status with Bolna Voice AI

Multilingual support

Review the telephony providers compatible with Bolna agents, including Twilio and Plivo. Integrate seamlessly to initiate inbound and outbound Voice AI calls.

Telephony setup

Explore Telephony Integrations with Bolna Voice AI

Discover methods to disconnect live Bolna Voice AI calls. Implement time-based hangups, custom prompts, and personalized messages for seamless call termination.

Hangup live calls

Hangup and Disconnect Bolna Voice AI calls

Optimize call lengths with Bolna Voice AI by setting duration limits. Automatically terminate calls exceeding limits for better resource management.

Terminate live calls

Terminate Bolna Voice AI calls

Learn to create, modify, and test Bolna Voice AI agents using the various capabilities like Agent Setup, Executions, Batches, Voice Lab, Phone Numbers and more.

Bolna Playground Overview

Step-by-step guide to creating, importing, and managing your Bolna Voice AI agents within the Playground.

Creating agents

Creating your Bolna Voice AI agent

Central hub for creating, modifying, and testing your Bolna Voice AI agents, including prompt customization and variable management.

Agents Tab

Set up Speech-to-Text (STT) configurations, choose transcriber providers, and define language and endpointing settings to be set for Bolna Voice AI agents.

Transcriber Tab

Configure Large Language Model (LLM) settings for your agents, including provider selection, token limits, and response creativity.

LLM Tab

Customize Text-to-Speech (TTS) settings, select voice providers, and adjust buffer sizes for optimal Bolna Voice AI agent performance.

Voice Tab

Manage telephony settings, including providers, call hangup prompts, and termination time limits to be used for phone calls with Bolna Voice AI agents.

Call Tab

Integrate function calling capabilities, such as appointment scheduling and call transfers, into your Bolna Voice AI agents.

Functions Tab

Add follow-up tasks like conversation summaries, information extraction, and custom webhooks for post-call actions to be performed by Bolna Voice AI agents.

Tasks Tab

Use and leverage Bolna Voice AI using APIs through HTTP requests from any language in your applicatons and workflows.

Explore Bolna Voice AI Agent APIs overview, featuring endpoints for creating, managing, and executing autonomous voice agents.

Overview

Bolna Voice AI Agent APIs Overview

Retrieve detailed Voice AI agent information, including configuration, status, and tasks, using Bolna APIs.

Get agent

Retrieve Voice AI Agent Details API

Learn how to create new agents with Bolna APIs, enabling customized tasks, prompts, and configurations for Bolna voice AI agents.

Create agent

Create Voice AI Agent API

Update agent configurations, tasks, and prompts to refine behavior and capabilities using Bolna Voice AI agent APIs.

Update agent

Update Voice AI Agent API

Learn how to partially update properties. Update Bolna Voice AI agent name, welcome message, webhook URL, voice settings, and prompts, using this endpoint.

Patch update agent

Patch Update to Voice AI Agent API

List all Voice AI agents under your account, along with their names, statuses, and creation dates, using Bolna APIs.

List agents

List all Voice AI Agents API

Fetch specific execution details of a Voice AI agent, including conversation times, statuses, and metrics, via Bolna APIs.

Changelog

Bolna AI Updates for July, 2025

Adding Rime TTS voices and models.

Incorporating websockets for Sarvam `bulbul:v2` model.

Changelog

​Adding Rime TTS voices and models.

​Incorporating websockets for Sarvam bulbul:v2 model.

Adding Rime TTS voices and models.

Incorporating websockets for Sarvam `bulbul:v2` model.