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Azure AI Foundry Blog
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Real-Time Speech Intelligence for Global Scale: gpt-4o-transcribe-diarize in Azure AI Foundry

Naomi Moneypenny's avatar
Oct 17, 2025

Voice is a natural interface for communication. Now, with the general availability of gpt-4o-transcribe-diarize, the new automatic speech recognition (ASR) model in Azure AI Foundry, transforming speech into actionable text is faster, smarter, and more accurate than ever. This launch marks a significant milestone in our mission to empower organizations with AI that delivers speed, accuracy, and enterprise-grade reliability.

With gpt-4o-transcribe-diarize seamlessly integrated, businesses can unlock critical insights from conversations, instantly converting audio into text with ultra-low latency and outstanding accuracy across 100+ languages. Whether you're enhancing live event accessibility, analyzing customer interactions, or enabling intelligent voice-driven applications, gpt-4o-transcribe-diarize helps capture spoken word and leverages it for real-time decision-making. Experience how Azure AI’s innovation in speech technology is helping to redefine productivity and global reach, setting a new standard for audio intelligence in the enterprise landscape.

Why gpt-4o-transcribe-diarize Matters

Businesses today operate in a world where conversations drive decisions. From customer support calls to virtual meetings, audio data holds critical insights. Gpt-4o-transcribe-diarize unlocks these insights, converting speech to text with ultra-low latency and high accuracy across 100+ languages. Whether you’re captioning live events, analyzing call center interactions, or building voice-driven applications, gpt-4o-transcribe-diarize offers the opportunity to help your workflows be powered by real-time intelligence.

Key Features

  • Lightning-Fast Transcription: Convert 10 minutes of audio in ~15 seconds with our new Fast Transcription API.
  • Global Language Coverage: Support for 100+ languages and dialects for inclusive, global experiences.
  • Seamless Integration: Available in Azure AI Foundry with managed endpoints for easy deployment and scale.

Real-World Impact

Imagine a reporter summarizing interviews in real time, a financial institution transcribing calls instantly, or a global retailer powering multilingual voice assistants; all with the speed and security of Azure AI Foundry. gpt-4o-transcribe-diarize can make these scenarios possible today.

Pricing and regional availability for gpt-4o-transcribe-diarize

Model

Deployment

Regions

Price $/1m tokens

gpt-4o-transcribe-diarize

Global Standard (Paygo)

East US 2, Sweden Central

Text input: $2.50

Audio input: $6.00

Output: $10.00

 

gpt-4o-transcribe-diarize in audio AI innovation context

gpt-4o-transcribe-diarize is part of a broader wave of audio AI innovation on Azure, joining new models like OpenAI gpt-realtime and gpt-audio that are purpose-built for expressive, low-latency voice experiences. While gpt-4o-transcribe-diarize delivers ultra-fast transcription with enterprise-grade accuracy, gpt-realtime enables natural, emotionally rich voice interactions with millisecond responsiveness—ideal for live conversations, voice agents, and multimodal applications. Meanwhile, audio models like gpt-4o-transcribe mini, and mini-tts extend the platform’s capabilities with customizable speech synthesis and real-time captioning, making Azure AI a comprehensive solution for building intelligent, production-ready voice systems.

gpt-realtime Features

OpenAI claims the gpt-realtime model introduces a new standard for voice-first applications, combining expressive audio generation with ultra-low latency and natural conversational flow. It’s designed to power real-time interactions that feel like natural, responsive speech.

Key Features:

  • Millisecond Latency: Enables live responsiveness suitable for real-time conversations, kiosks, and voice agents.
  • Emotionally Expressive Voices: Supports nuanced speech delivery with voices like Marin and Cedar, capable of conveying tone, emotion, and intent.
  • Natural Turn-Taking: Built-in mechanisms for detecting pauses and transitions, allowing fluid back-and-forth dialogue.
  • Function Calling Support: Seamlessly integrates with backend systems to trigger actions based on voice input.
  • Multimodal Readiness: Designed to work with text, audio, and visual inputs for rich, interactive experiences.
  • Stable APIs for Production: Enterprise-grade reliability with consistent behavior across sessions and deployments.

These features make gpt-realtime a foundational model for building intelligent voice interfaces that go beyond transcription—delivering conversational intelligence in real time.

gpt-realtime Use Cases

With its expressive audio capabilities and real-time responsiveness, gpt-realtime unlocks new possibilities across industries. Whether enhancing customer engagement or streamlining operations, it brings voice AI into the heart of enterprise workflows. Examples include:

  • Customer Service Agents: Power virtual agents that respond instantly with natural, tones for rich expressiveness, improving customer satisfaction and reducing wait times.
  • Retail Kiosks & Smart Devices: Enable voice-driven product discovery, troubleshooting, and checkout experiences with real-time feedback.
  • Multilingual Voice Assistants: Deliver localized, expressive voice experiences across global markets with support for multiple languages and dialects.
  • Live Captioning & Accessibility: Combine gpt-4o-transcribe-diarize gpt-realtime to provide real-time captions and voice synthesis for inclusive experiences.

These use cases demonstrate how gpt-realtime transforms voice into a strategic interface—bridging human communication and intelligent systems with speed and accuracy.

 

Ready to transform voice into value? Learn more and start building with gpt-4o-transcribe-diarize 

Updated Oct 16, 2025
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