Bandwidth Expands 'Bring Your Own AI' Approach With Support for OpenAI's Realtime API To Power Advanced AI Voice Agents Using GPT Language Models

• Integrates OpenAI's GPT language models with Bandwidth's owned-and-operated Communications Cloud
• Adds to multiple pathways for enterprises to bring their preferred conversational AI voice agents to Bandwidth's AI-ready edge infrastructure

RALEIGH, N.C., Sept. 24, 2025 /PRNewswire/ -- Bandwidth Inc. (NASDAQ: BAND), a leading global enterprise cloud communications company, today announced support for OpenAI's latest release of its Realtime API, now integrating voice calling with session initiation protocol (SIP). This enables enterprises to easily bring their own conversational AI voice agents, powered by OpenAI's GPT language models, to Bandwidth's edge infrastructure for natural, human-like conversations.

The Realtime API integration is the newest addition to Bandwidth's open and flexible strategy, which gives enterprise IT teams the freedom to choose multiple pathways to build best-in-class AI applications into their communications stack. Customer options include pre-built integrations with leading conversational AI platforms like Google Dialogflow and Cognigy, support for third-party applications across industries and use cases using Bandwidth's programmable voice API, support for native AI features within cloud contact center platforms, and support for standards-based APIs like OpenAI's Realtime API that let enterprises bring their own conversational AI into Bandwidth's edge infrastructure. Combined with Bandwidth's owned-and-operated cloud communications network with global reach, customers gain a unique advantage: the ability to run conversational AI applications with the high fidelity, low latency and intelligent routing that mission-critical voice calls require to be successful.

"Enterprises can now deploy AI voice agents powered by the technology behind ChatGPT, with the reliability and global scale of our Communications Cloud," said John Bell, Bandwidth's Chief Product Officer. "By offering many different options to integrate conversational AI, Bandwidth is becoming the AI orchestration leader for the global enterprise."

Discover how enterprises are transforming customer engagement with Bandwidth's conversational AI Integrations.

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About Bandwidth Inc.

Bandwidth (NASDAQ: BAND) is a global cloud communications software company that helps enterprises deliver exceptional experiences through voice calling, text messaging and emergency services. Our solutions and our Communications Cloud, covering 65+ countries and over 90 percent of global GDP, are trusted by all the leaders in unified communications and cloud contact centers–including Amazon Web Services (AWS), Cisco, Google, Microsoft, RingCentral, Zoom, Genesys and Five9–as well as Global 2000 enterprises and SaaS builders like Docusign, Uber and Yosi Health. As a founder of the cloud communications revolution, we are the first and only global Communications Platform-as-a-Service (CPaaS) to offer a unique combination of composable APIs, AI capabilities, owner-operated network and broad regulatory experience. Our award-winning support teams help businesses around the world transform their communications every day. For more information, visit Bandwidth.com.

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SOURCE Bandwidth Inc.