OpenAI

AI research and API company; audio, realtime voice, and language models.

openai.com · US · private

API products

• OpenAI Realtime API (gpt-realtime)

  "The Realtime API enables low-latency, bidirectional audio communication for building voice agents and audio applications."

• OpenAI Speech-to-Text

  "The Audio API provides two speech-to-text endpoints, transcriptions and translations, based on our state-of-the-art open source large-v2 Whisper model."

• OpenAI Text to Speech (gpt-4o-mini-tts / tts-1)

  "Transform text into lifelike spoken audio" - OpenAI's TTS service enabling blog narration, multilingual audio production, and realtime voice output via gpt-4o-mini-tts, tts-1, and tts-1-hd models.