Frequently asked questions
Everything you need to know about generating, listening and paying on SUN.
Getting started
What is SUN?
SUN turns any prompt into listening: podcasts, audio courses, audiobooks, fiction and guided meditations. Describe what you want to hear and SUN researches, writes, voices and mixes it for you.
How do I create my first audio?
Pick a format tab on the home screen, type what you want to hear, choose a duration and voice, and press Enter.
Is SUN free to try?
Yes. Your first hour of generation is free. After that you can pick a plan or pay as you go.
Which devices can I use SUN on?
SUN works in any modern browser and in our iOS and Android apps. Sign in with the same account and your creations follow you.
Creating audio
What formats can SUN make?
Podcasts, audio courses with lessons, narrated audiobooks, fiction and guided meditations.
How long can an episode be?
Choose the length in the composer before you generate. Courses and audiobooks are split into lessons or chapters automatically.
Can I attach my own material?
Use the Attach button to add PDFs, documents, slides, notes or images. SUN builds the episode around them.
Which languages are supported?
Open the language menu in the composer to see every language SUN has voices for, or leave it on Auto.
Voices & models
Can I use my own voice?
Yes. Choose Add your voice in the Voice menu and record a short sample. Voices you add stay private to your account.
Which AI models can I choose?
Genesis, our own model, is the default. The model menu in the composer lists every model available to you.
Library & sharing
Where are my creations saved?
Everything you generate lives in My space, with the most recent items in the sidebar.
Can I make audio private or public?
Each creation has a Private / Public switch. Public items can appear in the Library; private ones aren't listed there.
Plans & billing
How do credits work?
Generating audio uses credits, based on how long the audio is. Your balance is always shown in the credits menu at the top of the page.
What plans are available?
A Premium subscription, billed monthly or yearly, or pay as you go. See Plans for current pricing.
How do I cancel or change my plan?
From your Account page.
Is my payment information safe?
Payments are handled by our payment partners. SUN never sees or stores your card number.
SUN in ChatGPT
How do I connect my SUN account in ChatGPT?
Add SUN from the ChatGPT plugin directory, then choose Connect when ChatGPT asks and sign in on the SUN page that opens. If the connection expired or was disconnected, choose Reconnect. SUN never asks for your password in the chat.
Find SUN in the ChatGPT plugin directorySUN API
Is there an API?
Yes. The SUN API lets you generate audio programmatically. Visit the Developers page for your API key and documentation.