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ease
features
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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

Solar Pro 4 is an advanced AI model designed to effectively complete real-world tasks such as document analysis, tool execution, and deliverable production, ceasing operations when there is insufficient evidence. This model is specifically tailored for extensive and intricate workloads that span multiple documents, run commands in a terminal, and coordinate numerous tool interactions over several steps. With a remarkable 512K context window and the capacity for up to 128K output tokens, it enables the seamless incorporation of contracts, reports, and data files into a single workflow without the need for division. It can process both input and output in English, Korean, and Japanese, while users have the flexibility to adjust reasoning levels for either in-depth analysis or swift, real-time responses. Designed for precision, Solar Pro 4 maintains accuracy across lengthy documents, multi-turn tool applications, and terminal operations, ensuring that values and conclusions remain consistent throughout sequential deliverables, including Excel spreadsheets, comprehensive reports, and presentation slides. Moreover, its architecture supports collaborative projects by allowing teams to work simultaneously on various aspects of a task, enhancing overall productivity and efficiency.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

OpenAI Yes 
Hermes Agent No 
OpenRouter No 
Upstage AI No 
gpt-realtime Yes 

Integrations

OpenAI Yes 
Hermes Agent Yes 
OpenRouter Yes 
Upstage AI Yes 
gpt-realtime No 

Pricing Details

$0.40 per cached input
Free Trial Yes 
Free Version No 

Pricing Details

$0.03 per 1M tokens
Free Trial No 
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 Yes 
Live Training (Online) Yes 
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

Upstage

Founded

2020

Country

United States

Website

www.upstage.ai/blog/en/solar-pro-4

Product Features

Product Features

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