Seeduplex

Seeduplex

ByteDance
+
+

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About

Seeduplex is a native full-duplex speech large language model built on a new “listen while speaking” framework for more natural, fluid, and precisely paced voice interaction. Unlike traditional half-duplex systems that alternate between listening and replying, it continuously receives and understands user-side audio, allowing it to listen and speak simultaneously while tracking the broader acoustic environment. Its high-precision interference suppression distinguishes genuine user interaction from background noise, broadcasts, navigation prompts, side conversations, and overlapping voices, reducing false responses and false interruptions in complex settings. Seeduplex also combines speech and semantic features for adaptive endpoint detection, helping it recognize when a user is thinking, hesitating, correcting themselves, or has actually finished speaking. It can wait patiently through reflective pauses, respond quickly once an utterance ends, and stop smoothly when interrupted.

About

Includes multiple languages and accents, if on Chrome, you will get access to Google's voices as well. Super easy to use, no download, no login required. Drag, drop & play (or directly copy text & play). Simply fun to use and listen to great content. Great for listening in the background. Great for proof-reading, great for kids and more. We facilitate high-quality natural-sounding voices from different sources. There are male & female voices, in different accents and different languages. Choose the voice you like, insert text, click play to generate the synthesized speech and enjoy listening. TTSReader remembers the article and last position when paused, even if you close the browser. This way, you can come back to listening right where you previously left. Works on Chrome & Safari and on mobile too. Ideal for listening to articles. TTSReader enables exporting the synthesized speech with a single click.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Voice AI developers seeking full-duplex conversational speech that continuously listens, handles interruptions, suppresses interference, and responds naturally in real time

Audience

Individuals searching for a free text to speech solution to read articles and text aloud

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$8.25/month
Premium Subscription options -
Monthly - $12 USD
Annually - $99 USD (equivalent of $8.25 USD/Month)
Pay as you Go options (Non recurring):
1) 200k characters - $10 USD
2) 1 Million characters - $32 USD
3) 10 Million characters - $300 USD
Free Version
Free Trial

Reviews/Ratings

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

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Reviews/Ratings

Overall 3.7 / 5
ease 3.7 / 5
features 3.7 / 5
design 3.7 / 5
support 3.7 / 5

Pros & Cons from Real Users

Pros

  • 1) Seamless, user-friendly, and completely free of disruptive ads—even for free users. 2) How their support team responded quickly and genuinely, without trying to upsell or push me into buying their services. 3) They have a sincere hunger to improve and grow. 4) Open for feedback, and they not only hear it but also act on it.
  • Extremely easy to use and straightforward even for non tech guys as myself. Great voices. Completely free voices available, and great AI voices for a small fee. I use it every day to listen to online fiction novels.
  • Initial price and service are attractive, later much more problems arise. Advertised on what it can do.

Cons

  • It's been less than 6 months, and as of now, I have not been able to find any issue. Whatever issue I found a few months back has been catered and my feedback too has been incorporated. The detail of the issue is mentioned in the overall comments.
  • Sometimes has some rough edges design-wise, although I love it that the website player is on the whole screen.
  • lack of customer service. False advertisement. No email is returned. Service is not as described.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

ByteDance
Founded: 2012
China
seed.bytedance.com/en/seeduplex

Company Information

TTSReader
Founded: 2015
ttsreader.com

Alternatives

Alternatives

StepAudio 3

StepAudio 3

StepFun
Tuxpin

Tuxpin

Web Lite Solutions
GPT-Live

GPT-Live

OpenAI
TextAloud

TextAloud

NextUp Technologies
GPT-Live-1

GPT-Live-1

OpenAI

Categories

Categories

Text to Speech Features

Adjust Speaking Rate / Pitch
API
Audio Optimization
Custom Lexicons
Different Voice Choices
Multi-Language Support
Synchronize Speech

Integrations

Edge
Google Chrome
Mozilla Firefox
Safari

Integrations

Edge
Google Chrome
Mozilla Firefox
Safari
Claim Seeduplex and update features and information
Claim Seeduplex and update features and information
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Claim TTSReader and update features and information