STT

Callplane + Azure AI Speech

Enterprise STT/TTS for Microsoft-aligned deployments.

Azure AI Speech is the right STT/TTS choice for enterprise deployments inside Microsoft-aligned IT environments — government, large financial, and healthcare orgs that already standardize on Azure. Callplane ships full Azure adapters for both speech directions.

Why connect Azure AI Speech to Callplane?

A voice AI assistant is only useful when it can connect to the rest of your stack. The Azure AI Speech integration helps Callplane fit into the systems your team already uses for calling, transcription, reasoning, speech, routing, or customer data. That means the assistant can move from a demo into a production workflow without forcing you to replace your existing tools.

Callplane keeps the integration flexible. You can run one assistant with Azure AI Speech, pair it with other providers for a full voice pipeline, and change providers later if your cost, latency, coverage, or quality requirements change. This is especially useful for teams that need different settings per assistant, region, campaign, or customer segment.

The result is a voice agent that is easier to operate: fewer hard-coded assumptions, clearer provider boundaries, and a pricing model that separates Callplane's platform fee from the third-party services you already trust.

What you get with Callplane + Azure AI Speech

Streaming STT with custom vocabulary and acoustic models
Neural TTS voices including custom-trained brand voices
Regional data residency (US, EU, UK, Canada, AU, India, Japan)
Compliance: HIPAA, FedRAMP High, SOC 2, GDPR aligned out-of-box
Direct integration with Azure AD for SSO scenarios

When to choose Azure AI Speech

Choose Azure when compliance, regional residency, or Microsoft-stack alignment are hard requirements. Choose Deepgram + ElevenLabs for raw performance and cost in less-regulated environments.

How to configure

# .env
AZURE_SPEECH_KEY=...
AZURE_SPEECH_REGION=eastus

# Per-assistant config:
# STT -> Provider: Azure (model: whisper-large or azure-fast)
# TTS -> Provider: Azure (voice: en-US-JennyNeural)

For full setup, see the docs.

Pricing

Callplane: $0.03/min platform fee. Azure Speech: ~$1/audio-hour for STT (~$0.017/min), ~$16/M characters for Neural TTS (~$0.024/min). Comparable cost to alternatives once enterprise commitment discounts apply.

Pairs well with

Telephony

Twilio

The default Callplane telephony stack — proven, global, programmable.

Telephony

Vonage

Enterprise telephony with strong APAC and EU coverage.

LLM

OpenAI Realtime

Speech-to-speech in a single model — when you need it.

Ship a voice agent on Azure AI Speech today

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