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Average Ratings 0 Ratings

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ease
features
design
support

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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

Phonic-1 is an advanced AI model that facilitates real-time speech-to-speech interactions, available via Phonic's voice-agent development platform. This innovative tool processes audio input and produces vocal responses, enabling dynamic conversations complete with customizable voices, efficient turn-taking, and seamless interruption management. Developers can utilize an API and various SDKs to integrate the model into their projects, leveraging Phonic's comprehensive tools for building, testing, and deploying conversational voice agents. The platform specifically caters to developers and businesses aiming to create engaging voice applications for purposes such as customer support, sales, and appointment scheduling, among other verbal communications. It offers flexibility in deployment options, allowing either hosted solutions or self-managed setups, while also providing thorough documentation for integrations and webhook connections to third-party services. Notably, Phonic asserts that its voice technology is capable of supporting over 50 languages, making it a versatile choice for a global audience. Furthermore, its user-friendly design ensures that businesses can quickly adapt and implement these voice solutions to enhance their customer interactions.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

Amazon Connect No 
LiveKit No 
Model Context Protocol (MCP) No 
OpenAI Yes 
Phonic No 
Telnyx No 
Twilio Voice No 
gpt-realtime Yes 

Integrations

Amazon Connect Yes 
LiveKit Yes 
Model Context Protocol (MCP) Yes 
OpenAI No 
Phonic Yes 
Telnyx Yes 
Twilio Voice Yes 
gpt-realtime No 

Pricing Details

$0.40 per cached input
Free Trial Yes 
Free Version No 

Pricing Details

$0.07/min
Starter costs $0.07 per conversation minute with no minimum. Pro costs $0.065 per minute with a $200 monthly minimum. Enterprise pricing is custom, with volume-based discounts available.
Free Trial Yes 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises Yes 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

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

Phonic

Founded

2024

Country

United States

Website

phonic.ai

Product Features

Product Features

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