Azure OpenAI Models for Bolna Voice Agents

Azure OpenAI Service provides the same OpenAI models through Microsoft’s cloud infrastructure — adding data residency controls, private networking, and enterprise compliance (SOC 2, HIPAA, ISO 27001). Use this provider when your deployment requires regional data handling or Azure-native security.

Quick config

"llm_agent": {
  "agent_type": "simple_llm_agent",
  "agent_flow_type": "streaming",
  "llm_config": {
    "provider": "azure-openai",
    "model": "gpt-5.4-mini",
    "max_tokens": 150,
    "temperature": 0.2
  }
}

Connect your Azure account at platform.bolna.ai/auth/azure. You’ll need your Azure endpoint URL, API key, and deployment name.

Supported models

Model	Context	Best for	Notes
`gpt-5.5`	1M tokens	Maximum quality; complex tasks	Flagship; highest cost
`gpt-5.4`	1M tokens	General-purpose production	Strong reasoning at lower cost than 5.5
`gpt-5.4-mini`	400K tokens	Most voice agents	Recommended — best latency/cost balance
`gpt-5.4-nano`	400K tokens	Ultra-high-volume, simple tasks	Cheapest option
`gpt-4.1`	1M tokens	Previous gen; still available	Stable if already deployed
`gpt-4.1-mini`	1M tokens	Previous gen; still available	Stable if already deployed
`gpt-4o`	128K tokens	Previous gen; still available	Stable if already deployed
`gpt-4o-mini`	128K tokens	Previous gen; still available	Stable if already deployed

Azure model availability varies by region. Not all models are available in all Azure regions immediately at launch. Check the Azure OpenAI model availability page for your region.

Key settings

Setting	Type	Recommended	Description
`provider`	string	`"azure-openai"`	Provider name
`model`	string	`"gpt-5.4-mini"`	Model/deployment name
`max_tokens`	integer	`150`	Cap on response length — keep short for voice
`temperature`	float	`0.2`	Lower = more consistent; good for scripted calls
`agent_flow_type`	string	`"streaming"`	Always `"streaming"` for voice

When to use Azure OpenAI vs direct OpenAI

Use Azure OpenAI when:

Your data must stay within a specific region (EU data residency, HIPAA)
You need private networking (VNet, private endpoints)
Your organization already uses Azure for infrastructure
You need enterprise SLA guarantees

Use direct OpenAI when:

Simplest setup is preferred
You don’t have compliance requirements for data residency
You want access to the latest models as soon as they launch (Azure has a short lag)

FAQ

Do I need a separate Azure deployment for each model?

Yes. In Azure OpenAI, you create a named deployment for each model in the Azure portal. The deployment name is what you pass as the model field in Bolna config.

Does Azure OpenAI have the same models as OpenAI?

Azure mirrors OpenAI’s lineup but with a short availability lag after new models launch. All GPT-5.x, GPT-4.1, and GPT-4o variants are available. Check Microsoft’s model page for your region.

How do I reduce latency on Azure?

Use gpt-5.4-mini or gpt-4.1-mini, keep max_tokens at 150, and deploy to an Azure region geographically close to your users. See Latency for more.

LLM Tab — configure LLM in the dashboard
OpenAI — same models without Azure overhead
Prompting Guide — write effective prompts for voice
Custom Function Calls — add tools to your agent

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Azure OpenAI Models for Bolna Voice Agents

Quick config

Supported models

Key settings

When to use Azure OpenAI vs direct OpenAI

FAQ

​Quick config

​Supported models

​Key settings

​When to use Azure OpenAI vs direct OpenAI

​FAQ

​Related

Quick config

Supported models

Key settings

When to use Azure OpenAI vs direct OpenAI

FAQ

Related