GPT-Realtime and GPT-Realtime mini
Deprecated 2026-07-20, shutdown 2027-01-20; replacements gpt-realtime-2.1 and gpt-realtime-2.1-mini. gpt-realtime-mini released 2025-10-06; its alias moved to the 2025-12-15 snapshot on 2026-01-13. Earlier gpt-4o-realtime-preview models were shut down 2026-05-12.
- Context window
- 32,000 tokens
- Max output
- 4,096 tokens
- Knowledge cutoff
- 2023-10
- Input
- text, audio, image
- Output
- text, audio
- License
- proprietary
- Pricing
- text input: $4 · text output: $16 · audio input: $32 · audio output: $64 · cached input: $0.4 (per 1M tokens (USD) for gpt-realtime; gpt-realtime-mini audio $10 in / $20 out, text $0.60 / $2.40) source
- Verified
- 2026-09-29
How to call it
| Provider | Model id | Endpoint / URL | Docs |
|---|---|---|---|
| OpenAI API | gpt-realtime | wss://api.openai.com/v1/realtime | docs |
| OpenAI API | gpt-realtime-mini | wss://api.openai.com/v1/realtime | docs |
Notable capabilities (1)
- First GA OpenAI realtime speech-to-speech model: Shipped with Realtime API general availability (2025-08-28); speaks over WebRTC, WebSocket or SIP phone calls. source
Sources:
Other OpenAI models
GPT-6 Luna · GPT-6 Sol · GPT Image 2.5 Flare · GPT Image 2.5 Sunburst · GPT-6 Astra · GPT-Live-Transcribe · GPT-Transcribe · GPT-5.6 Terra · GPT-Live 1 · GPT-Realtime-2.1 · GPT-Realtime-2 · GPT-Realtime-Translate · GPT-Rosalind · GPT-Audio-1.5 (and gpt-audio / gpt-audio-mini) · GPT-5.3-Codex · gpt-oss-120b · gpt-oss-20b · GPT-4o mini TTS · text-embedding-3-large · text-embedding-3-small · GPT-5.6 Luna · GPT-5.6 Sol · GPT-Realtime-Whisper · GPT-5.5 Pro · GPT-5.5 · GPT Image 2 · GPT-5.4 · GPT-Realtime-1.5 · GPT-4.1 · GPT-4o · TTS-1 / TTS-1 HD · Whisper large-v3 / large-v3-turbo (open weights) · o3 · GPT-4o Transcribe / Mini Transcribe / Transcribe Diarize · Whisper (whisper-1 API) · Sora 2