How This Whole Thing Works
Audio courses on any topic you can think of — generated on demand and narrated by AI, chaptered, with a full written transcript. Sign up for free and listen, free, forever.
For Listeners
Pick Something Interesting
Browse audio courses on any topic. Create a free account and every course is yours to listen to — no subscription, no fees, no "please enter your credit card."
Press Play
Each course is narrated, chaptered, and ready for your headphones. Listen on a walk, in the car, or while you do the dishes.
Pick Up Where You Stopped
Save courses for later listening, jump between chapters, or skim the written transcript when you want to look something up.
Want a course that doesn't exist yet? You can create one and it joins the free library for everyone.
Create an Audio CourseWhat Happens Behind the Scenes
You tell us what to learn
A YouTube video, article, docs page, or a description in your own words. Whatever sparks your curiosity.
Our AI goes down the rabbit hole
It searches the web, reads source material, verifies facts, and builds a deep understanding of the topic. Basically the research phase you always skip.
It writes, critiques, and rewrites the script
Chapters get structured with cited claims, the language gets tuned for the ear (not the eye), and the whole script goes through multiple rounds of AI review before a single word is narrated.
Narration and chaptering
The finished script is read aloud by an AI voice, split into clean chapters, and packaged with the full written transcript for SEO and accessibility.
Published for everyone
The course lands in obyo's library. Anyone with a free account can press play, save it for later, and read the transcript — for free, forever.
Frequently Asked Questions
Is it really free to listen?
100%. Registration is free, and every course is completely free to listen to. No subscription, no paywalls, no sneaky "premium tier." Listen as much as you want, on any device. The only optional cost is funding the creation of a brand-new course.
What do I get when I create a course?
Your name can appear on the course page as its creator — it's optional, so you can stay anonymous if you'd rather. Either way, the course becomes a free, public course that anyone can listen to, forever.
How accurate are the courses?
We take this seriously. Here's what happens before a course goes live:
- •Deep research, not guessing. The AI reads your seed material, then searches the web for dozens of additional sources — typically 75 to 150, prioritizing official docs and authoritative references over blog posts. Every claim must trace back to something it actually read.
- •Citations in the transcript. The written transcript includes linked references to sources so you can verify claims yourself. No "trust me bro."
- •Automated quality checks. After generation, the script is validated against minimum thresholds for depth, structure, and source coverage. Anything that doesn't pass gets sent back for refinement before narration.
- •AI fact-checking. No AI is perfect. After the script is drafted, a separate AI pass cross-checks claims against the original sources and rewrites anything that doesn't hold up. The narrated audio you hear has been through that second-look review.
How long does it take to generate a course?
About three hours end to end. Roughly two hours for the AI to research the topic, draft the chapter-by-chapter script, critique it, and rewrite weak sections; then about another hour for narration and chapter-marker rendering. We'll email you when it's ready — go do something fun in the meantime.
Can I request any topic?
Almost anything that works well in spoken form. Give it a description, a YouTube video, an article, or a docs page as a starting point. We've seen everything from quantum physics to sourdough starters. Some highly visual or symbol-heavy topics (think: a tutorial that relies on diagrams or code) don't translate well to audio — we'll flag those if we see them.
Is the narrator a real person?
No — narration is AI-synthesized. We tune the voice for clarity and pacing, but it's not a human voice actor. We think it sounds good enough to listen to for hours; you can sample any published course to judge for yourself before funding one.