Free mode uses your browser’s built‑in voices (no API). Pro mode generates downloadable audio using the OpenAI API (Pro login required).
Note: Most browsers can play built‑in voices but can’t reliably export them as an audio file without an API or local TTS engine.
Use Pro if you need MP3/WAV downloads.
Quick tips
Click once anywhere on the page before pressing Play (some browsers require a user gesture).
If the voice list is empty, wait 2 seconds and refresh.
Shorter chunks sound smoother — split long scripts into paragraphs.