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Description

GPT-Realtime-2.1 is an OpenAI realtime model designed for advanced voice-agent and speech-to-speech AI applications. It improves on GPT-Realtime-2 with stronger alphanumeric recognition, better silence and noise handling, and more natural interruption behavior. The model supports text, audio, and image inputs, while producing text and audio outputs for interactive realtime experiences. Developers can use GPT-Realtime-2.1 across endpoints such as Chat Completions, Responses, Realtime, realtime translation, realtime transcription sessions, and related OpenAI API workflows. The model supports function calling, configurable reasoning effort, instruction following, and reasoning token support for complex voice-agent tasks. Its 128,000-token context window and 32,000-token maximum output make it suitable for longer conversations and more detailed realtime workflows. GPT-Realtime-2.1 does not support video, structured outputs, fine-tuning, or predicted outputs according to OpenAI’s current documentation. Pricing starts at $4 per 1 million text input tokens and $24 per 1 million text output tokens, with separate pricing for audio and image tokens. By combining realtime audio interaction, reasoning, tool use, and multimodal input, GPT-Realtime-2.1 helps developers build responsive AI agents for support, sales, operations, translation, transcription, and interactive voice applications.

Description

OpenAI’s GPT-Realtime-Whisper is an innovative streaming transcription model designed to deliver low-latency speech-to-text capabilities for live applications. This technology captures audio in real-time as individuals talk, enhancing voice-enabled applications by making them feel quicker, more engaging, and seamless, whether it’s by providing instant captions or generating meeting notes that align with ongoing discussions. By enabling the use of live speech in business processes, it allows teams to facilitate captions for various scenarios, including meetings, classrooms, broadcasts, and events, while also crafting notes and summaries during the dialogue. Moreover, it supports the development of voice agents that must continuously comprehend user input and expedites follow-up workflows for interactions that involve substantial spoken communication. As part of a cutting-edge suite of real-time voice models in the API, it not only transcribes but also reasons and translates as conversations take place, advancing the capabilities of real-time audio interactions beyond basic exchanges to sophisticated voice interfaces that can actively listen, interpret, transcribe, and respond dynamically as discussions progress. This evolution in technology promises to transform how we interact with voice-driven systems, making them more intuitive and effective in handling live communication.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

OpenAI
gpt-realtime
OpenAI Whisper

Integrations

OpenAI
gpt-realtime
OpenAI Whisper

Pricing Details

$0.40 per cached input
Free Trial
Free Version

Pricing Details

$0.017 per minute
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

developers.openai.com/api/docs/models/gpt-realtime-2.1

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

openai.com/index/advancing-voice-intelligence-with-new-models-in-the-api/

Product Features

Product Features

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