Whisper
An open-sourced speech recognition model approaching human-level robustness and accuracy on English.
2022
2023
ChatGPT can see, hear and speak
ChatGPT can now see, hear and speak.
2024
GPT-4o
New flagship model that reasons across audio, vision and text in real time.
Realtime API
Developers can build fast speech-to-speech experiences into their applications.
2025
Next-generation audio models in the API
New speech-to-text and text-to-speech models in the API; developers can instruct how the voice speaks.
gpt-realtime
A more advanced speech-to-speech model; the Realtime API adds MCP servers, image input and SIP calls.
2026
Realtime voice models in the API
New realtime API voice models that reason, translate and transcribe speech.
GPT-Live
A new generation of voice models for natural conversation, now powering ChatGPT Voice.
OpenAI Presence
Enterprise platform for deploying voice and chat agents in customer and internal workflows.
Voice mode on Opus, Sonnet and Haiku
Voice mode now runs on the main Claude models, uses connected tools and speaks more languages.
GPT-Live-1 in the API
Full-duplex voice conversations in the API, with custom voices and telephony support.
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