Dessa

Dessa

Block
+
+

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About

Dessa is Block's speech-to-speech artificial intelligence model for conversational voice research and applications. It takes audio input and produces audio output directly, without converting speech into text as an intermediate step. Trained from scratch on human conversation rather than text, the model supports full-duplex interaction, listening and speaking at the same time, and runs locally on a MacBook Pro with an M4 Max chip or better. It captures conversational cues such as emotion, sarcasm, laughter, pauses, and turn-taking that can be lost in text-based pipelines. Dessa is intended for AI safety researchers and developers studying voice-model behavior, privacy, and real-time interaction. It is a speech model for research and development, not a general-purpose business application or hosted voice-agent platform.

About

The most realistic and versatile AI speech software, ever. Eleven brings the most compelling, rich and lifelike voices to creators and publishers seeking the ultimate tools for storytelling. Generate top-quality spoken audio in any voice and style with the most advanced and multipurpose AI speech tool out there. Our deep learning model renders human intonation and inflections with unprecedented fidelity and adjusts delivery based on context. Our AI model is built to grasp the logic and emotions behind words. And rather than generate sentences one-by-one, it’s always mindful of how each utterance ties to preceding and succeeding text. This zoomed-out perspective allows it to intonate longer fragments convincingly and with purpose. And finally you can do this with any voice you want.

Platforms Supported

Windows Not Supported
Mac Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

Audience

AI safety researchers and developers evaluating or building speech-based conversational AI.

Audience

Users or companies that want powerful AI voice generation software to generate lifelike speech

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

$1 per month
From $1 to Enterprise
Free Version Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Reviews/Ratings

Overall 4.0 / 5
ease 4.2 / 5
features 4.2 / 5
design 4.0 / 5
support 4.2 / 5

Pros & Cons from Real Users

Pros

  • Aesthetic interface. The support team answer quickly when they are interested in selling you crap. A variety of languages and pronunciations just as on similar platforms.
  • Text to speech works seamlessly, consistently accurate and produces a high quality output superior to competitors. The real standout to me is voice cloning, must be experienced to appreciate the magic.
  • I’ve been using ElevanLabs for 6 months now. I’ve been impressed by the quality and range of voices available on TTSA, as well as how responsive the team is. The Discord was a life saver when I started producing audio using the platform and continues to be useful. Their voice cloning is also better than other services I’ve tried.
  • Super realistic voices, even whisper! It's fast (much faster than many others). It has tons of voices. 10.000 credits for free. Super easy download of MP3.

Cons

  • See below. When you realize what crap they sold you, you are strongly suggested to upgrade for an additional $200.
  • Wish it was more popular so there was a bigger community to leverage.
  • A bit on the expensive side once you’re producing a lot of audio, but worth the spend for the quality.
  • The voices change a little bit in tone each time you generate. This is great if you are looking for variations. But if you want 10 separate sentences in 1 tone, you can't generate them sentence by sentence, as they might not match in tone. (I hope you understand what I mean). Always need more voices ;-)

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Block
Founded: 2009
United States
block.xyz/dessa

Company Information

ElevenLabs
Founded: 2022
United States
elevenlabs.io

Alternatives

Alternatives

Grok Voice 3.0

Grok Voice 3.0

SpaceXSI
LOVO

LOVO

Love Your Voice
Eleven Realtime

Eleven Realtime

ElevenLabs

Categories

AI Voice Models Supported

Categories

Agentic AI Supported
AI Agent Builders Supported
AI Agents Supported
AI Tools Supported
AI Voice Agents Supported
AI Voice Changers Supported
AI Voice Models Supported
Conversational AI Supported
Dubbing Supported
Generative AI Supported
Speech to Text Supported
Text to Speech Supported
Voice Bot Supported
Voice Cloning Supported
Voice Over Supported

Text to Speech Features

Adjust Speaking Rate / Pitch Not Supported
API Supported
Audio Optimization Supported
Custom Lexicons Supported
Different Voice Choices Supported
Multi-Language Support Supported
Synchronize Speech Not Supported

Integrations

AIVideo.com Not Supported
ElevenReader Not Supported
Hunch Not Supported
Knolli Not Supported
Layercode Not Supported
Magnific Not Supported
Mimasa AI Not Supported
Monet AI Not Supported
PleyMeikel Labs Not Supported
PyGPT Not Supported
React Not Supported
Restack Not Supported
Solid Not Supported
Spokenly Not Supported
Vellum Not Supported
Viblo Not Supported
Vocode Not Supported
WordPress Not Supported
YouTube Not Supported
Zoice Not Supported

Integrations

AIVideo.com Supported
ElevenReader Supported
Hunch Supported
Knolli Supported
Layercode Supported
Magnific Supported
Mimasa AI Supported
Monet AI Supported
PleyMeikel Labs Supported
PyGPT Supported
React Supported
Restack Supported
Solid Supported
Spokenly Supported
Vellum Supported
Viblo Supported
Vocode Supported
WordPress Supported
YouTube Supported
Zoice Supported
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