LLM
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Azure OpenAI

Run OpenAI models on Azure with Bolna voice agents. Get enterprise compliance, SLAs, and data residency while powering intelligent phone conversations.

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At a glance

How Azure OpenAI fits in the stack

Best for

Reasoning, policy handling, tool use, and response generation.

Use this layer when

You want to tune quality, cost, latency, or function-calling behavior.

Connects to

Transcribed caller input upstream and voice or actions downstream.

Voice Stack

The LLM is the reasoning layer

The LLM is the reasoning layer

This provider decides how the agent interprets intent, selects next actions, calls tools, and formulates responses. It is the decision engine inside the voice stack.

TelephonyPhone Network
STTListener
LLMReasoning
TTSVoice
ToolsActions

This page focuses on where Azure OpenAI fits in a production voice stack. For full setup steps, credentials, and API details, use the documentation link above.

Overview

Azure OpenAI Service provides enterprise customers with access to OpenAI's powerful language models (GPT-4o, GPT-4o-mini, GPT-3.5 Turbo) through Microsoft's trusted cloud infrastructure. With Bolna's Azure OpenAI integration, you can build voice agents that can leverage enterprise grade AI with an enhanced compliance, data residency guarantees, and Microsoft's enterprise SLAs.

Azure OpenAI is ideal for the regulated industries and enterprises that require enhanced security, compliance certifications (SOC 2, HIPAA, ISO 27001), and data residency controls while maintaining the same AI capabilities as OpenAI's models.

Features & Use Cases

Enterprise Compliance
Azure OpenAI meets enterprise compliance requirements including SOC 2, HIPAA, ISO 27001, and other regional data protection regulations. Perfect for sectors like healthcare, finance, and public sector.

Data Residency & Privacy
Deploy models in specific Azure regions to meet data residency requirements. Your data stays within your chosen geography and is not used to train or improve models.

Microsoft Enterprise SLA
Benefit from Microsoft's 99.9% uptime SLA with financial backing, 24/7 enterprise support, and dedicated customer success teams.

Consistent API with OpenAI
Azure OpenAI uses the same models and API structure as OpenAI, making migration straightforward.

Private Network Access
Deploy with Azure Virtual Network (VNet) integration for secure, private connectivity without exposing endpoints to the public internet.

Use Case: Healthcare Call Center
HIPAA-compliant voice agents for patient scheduling, symptom triage, and appointment reminders with guaranteed data residency in required regions.

Use Case: Financial Services
Build compliant voice agents for account inquiries, fraud detection calls, and customer support while meeting financial regulatory requirements.

Browse this layer

Keep exploring the voice stack

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Large Language Models

The LLM is the brain of your voice agent. It understands what callers say and decides how to respond. Bolna lets you swap between models like GPT-4o, Claude, and DeepSeek without changing your agent configuration, so you can optimize for speed, cost, or reasoning depth.

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Telephony

Telephony providers connect your voice agents to the phone network so they can make and receive real calls. Bolna supports managed integrations with major carriers as well as bring-your-own-carrier via SIP trunking, giving you full control over call routing, number provisioning, and cost.

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Speech-to-Text

Speech-to-text converts what callers say into text that your LLM can process. Transcription accuracy and latency directly affect how natural a conversation feels. Bolna supports streaming STT providers optimized for telephony audio, including specialized models for Indian languages.

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Text-to-Speech

Text-to-speech turns your agent responses into spoken audio. Voice quality shapes how callers perceive your brand. Flat, robotic speech kills trust while natural, expressive voices build it. Bolna integrates with the fastest TTS providers so responses sound human and arrive without awkward pauses.

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Tools & Workflows

Tools let your voice agents take action during a call, not just talk. Book a calendar slot, look up an order in Shopify, push a lead into your CRM, or trigger a multi-step automation in Zapier. These integrations turn voice agents from answering machines into workflow engines.

See where Azure OpenAI fits in your production workflow

Use the demo to walk through provider selection, stack tradeoffs, and the exact workflow you want Bolna to automate.