A new generation of voice models for natural human-AI interaction, now powering ChatGPT Voice.
Retell AI is transforming the call center with AI voice automation powered by GPT-4o and GPT-4. 1.
We’re releasing a more advanced speech-to-speech model and new API capabilities including MCP server support, image input, and SIP phone calling support.
Developers can now build fast speech-to-speech experiences into their applications
Tolan built a voice-first AI companion with GPT-5. 1, combining low-latency responses, real-time context reconstruction, and memory-driven personalities for natural conversations.
Explore new realtime voice models in the OpenAI API that can reason, translate, and transcribe speech, enabling more natural and intelligent voice experiences.