OpenAI GPT-4o Audio Models
Build Powerful Voice Agents
OpenAI GPT-4o Audio Models launched on March 21, 2025 with 379 votes, #78 of 7,215 launches that month and more than 99% of that year's launches. The site was not reachable when checked in September 2026.
In plain words
OpenAI's GPT-4o Audio Models provide developers with speech-to-text and text-to-speech capabilities. The speech-to-text component offers improved accuracy over Whisper, while the text-to-speech feature can be steered for different outputs. Developers can use these models to build voice agents, transcription tools, and other audio-based applications. The tools are designed for those working with AI and audio in development projects.
written from the facts on this page · September 2026
From the sources
New OpenAI audio models for developers: gpt-4o powered speech-to-text (more accurate than Whisper) and steerable text-to-speech. Build voice agents, transcriptions, and more.
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