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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

Gemini Audio comprises a suite of sophisticated real-time audio models built on the innovative Gemini architecture, specifically crafted to facilitate natural and fluid voice interactions and dynamic audio generation using straightforward language prompts. This technology fosters immersive conversational experiences, allowing users to engage in speaking, listening, and interacting with AI in a continuous manner, seamlessly merging understanding, reasoning, and audio-based response generation. It possesses the dual capability of analyzing and creating audio, which empowers a range of applications including speech-to-text transcription, translation, speaker identification, emotion detection, and in-depth audio content analysis. Optimized for low-latency, real-time scenarios, these models are particularly well-suited for live assistants, voice agents, and interactive systems that necessitate ongoing, multi-turn dialogues. Furthermore, Gemini Audio incorporates advanced functionalities like function calling, enabling the model to activate external tools while integrating real-time data into its responses, thereby enhancing its versatility and effectiveness in diverse applications. This innovative approach not only streamlines user interaction but also enriches the overall experience with AI-driven audio technology.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

Gemini
OpenAI
gpt-realtime

Integrations

Gemini
OpenAI
gpt-realtime

Pricing Details

$0.40 per cached input
Free Trial
Free Version

Pricing Details

Free
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

Google

Founded

1998

Country

United States

Website

deepmind.google/models/gemini-audio/

Product Features

Product Features

Speech Recognition

Audio Capture
Automatic Form Fill
Automatic Transcription
Call Analysis
Concatenated Speech
Continuous Speech
Customizable Macros
Multi-Languages
Specialty Vocabularies
Speech-to-Text Analysis
Variable Frequency
Voice Recognition

Alternatives

Alternatives

MAI-Transcribe-1.5 Reviews

MAI-Transcribe-1.5

Microsoft AI