GPT-Realtime-2.1 Mini

reasoningproprietary

GPT-Realtime-2.1 Mini is a distilled reasoning model for faster, lower-cost realtime voice interactions. It supports audio and text inputs over WebRTC, WebSocket, or SIP connections and improves alphanumeric recognition over GPT-Realtime-2.

Intelligence
Reasoning
Speed
Context
128K
Max output
32K
Input price
$0.6/1M tokens
Output price
$2.4/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling

Details

Model IDgpt-realtime-2.1-mini
Provider OpenAI
Creator openai
Familygpt-realtime
Licenseproprietary
Statusactive
Typereasoning
Input modalitiestext, audio, image
Output modalitiestext, audio
Open weightNo
Parameters—
Architecture—
Context window128K tokens
Max input—
Max output32K tokens
Reasoning tokensYes
Knowledge cutoff
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Endpoints

RealtimeWS
Low-latency streaming via WebSockethttps://api.openai.com/v1/realtime

Pricing

Audio tokensPer 1M tokens
InputCached inputOutput
Standard$10$0.3$20
Text tokensPer 1M tokens
InputCached inputOutput
Standard$0.6$0.06$2.4
Image tokensPer 1M tokens
InputCached inputOutput
Standard$0.8$0.08—

Family Comparison: gpt-realtime

ModelMax durationSample rateChannelsLanguagesGenresPricing
GPT-Realtime-Translate——————
GPT-Realtime-Whisper——————
GPT-Realtime-2.1 Mini—————$0.6$2.4
GPT-Realtime Mini—————$0.6$2.4
GPT-Realtime-1.5—————$4$16
GPT-Realtime-2.1—————$4$24
GPT-Realtime-2—————$4$24
GPT-Realtime—————$4$16

API

GET/v1/models/openai/gpt-realtime-2.1-mini