Average Ratings 0 Ratings
Average Ratings 0 Ratings
Description
Dessa is an innovative speech-to-speech AI model developed by Block, specifically designed for exploring conversational voice technologies and their various applications. This model uniquely processes audio inputs and generates audio outputs directly, bypassing the need for an intermediary text conversion. Instead of relying on text as a foundation, it has been built from the ground up using actual human conversations, enabling it to facilitate full-duplex communication, where it can listen and speak simultaneously. Designed to operate locally on advanced hardware like the MacBook Pro equipped with an M4 Max chip or superior, Dessa effectively captures nuanced conversational elements such as emotions, sarcasm, laughter, pauses, and turn-taking, which are often diminished in text-based communication systems. Aimed primarily at AI safety researchers and developers, it serves as a powerful tool for examining voice model dynamics, privacy implications, and the intricacies of real-time interactions. Importantly, Dessa is not intended for general business use or as a hosted voice-agent solution, marking its specific role in the realm of research and development within the voice technology landscape. This specificity underscores its potential to deepen understanding of voice interactions and inform future AI advancements.
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.
API Access
Has API
No
API Access
Has API
Yes
Integrations
OpenAI
No
gpt-realtime
No
Pricing Details
No price information available.
Free Trial
No
Free Version
No
Pricing Details
$0.40 per cached input
Free Trial
Yes
Free Version
No
Deployment
Web-Based
No
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
Yes
Linux
No
Chromebook
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
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
No
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Types of Training
Training Docs
No
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
Block
Founded
2009
Country
United States
Website
block.xyz/dessa
Vendor Details
Company Name
OpenAI
Founded
2015
Country
United States
Website
developers.openai.com/api/docs/models/gpt-realtime-2.1