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What is GPT-Realtime-2.1?

GPT-Realtime-2.1 is an OpenAI realtime reasoning model for developers building voice agents, conversational AI assistants, and speech-to-speech applications. The model is designed to support fast interactive experiences where users can speak naturally and receive audio or text responses. GPT-Realtime-2.1 updates GPT-Realtime-2 with improved handling of alphanumeric recognition, silence, background noise, and interruptions. It supports text, audio, and image input, with text and audio output, while video is not supported. The model includes configurable reasoning effort so developers can balance reasoning depth, latency, and token usage for different voice-agent workflows. GPT-Realtime-2.1 also supports instruction following, function calling, tool use, and reasoning tokens for more complex applications. Its 128,000-token context window and 32,000-token maximum output allow it to manage longer conversations and richer task context. OpenAI lists support across endpoints such as Chat Completions, Responses, Realtime, realtime translations, realtime transcription sessions, Assistants, Batch, and related API services. The model’s documented pricing includes $4 per 1 million text input tokens, $0.40 per 1 million cached text input tokens, and $24 per 1 million text output tokens, with separate audio and image token pricing. GPT-Realtime-2.1 is not documented as supporting streaming, structured outputs, fine-tuning, or predicted outputs. By combining realtime speech, multimodal input, reasoning, function calling, and tool use, GPT-Realtime-2.1 gives developers a foundation for building sophisticated AI voice agents and interactive customer-facing applications.

What is GPT-Live-1.1 Quip?

GPT-Live-1.1 Quip represents an advanced voice AI model designed to improve the realism and intelligence of user interactions with artificial intelligence. Expanding on the capabilities of its predecessor, GPT-Live-1, it allows for full-duplex voice communication, permitting users to converse without waiting for their turn to speak. The model skillfully navigates through pauses, interruptions, and changes in speech tempo, making instantaneous choices about whether to reply or continue listening. This creates an experience that flows naturally, closely resembling human conversation. In addition, GPT-Live-1.1 Quip supports voice interactions across multiple platforms, such as ChatGPT, Codex, and Dots, providing a versatile solution for a range of AI-powered tasks. Focused on promoting safe interactions, the model employs comprehensive safety training, voice-specific evaluations, and strong system-level safeguards to guarantee suitable exchanges. Moreover, its development process is characterized by stringent data quality controls, utilizing diverse datasets alongside meticulous filtering techniques to enhance both its performance and reliability, ensuring it meets the high standards expected by users. By doing so, it not only advances technological capabilities but also prioritizes user trust and safety in AI communications.

Media

Media

Integrations Supported

OpenAI
gpt-realtime

Integrations Supported

ChatGPT
OpenAI Codex
OpenAI Dots

API Availability

Has API

API Availability

Pricing Information

$0.40 per cached input
Free Trial Offered?

Pricing Information

Pricing not provided

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

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

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

deploymentsafety.openai.com/gpt-live-1-1

Categories and Features

AI Models

Not specified

Categories and Features

AI Voice Models

Not specified

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