HirayaAI
HirayaAI
Plain-language terms. By uploading a file or paying for a conversion, you agree to them.
HirayaAI is a self-serve tool that converts a file you upload (EPUB, PDF, or TXT) into an MP3 audio file using AI text-to-speech. You choose the file, you press convert — we provide the tool, like a photocopier or a PDF converter.
You may only upload files that you own or have permission to use. By ticking the confirmation box at upload, you affirm that you have the necessary rights to the file and to the audio generated from it, and you accept full responsibility for both. We record this confirmation (with a timestamp and your IP address) for accountability. Do not upload copyrighted books, articles, or other material you don't have the rights to.
The free preview lets you hear your file before paying. A full conversion is a one-time payment per file, priced by word count — $5 for files up to 150,000 words and $10 for larger ones — processed by Lemon Squeezy as merchant of record. You'll see the exact price before you pay. If a paid conversion fails, we refund it automatically. If you're not happy with your audiobook, contact us and we'll make it right — we honor a money-back guarantee.
We don't keep your content around. Unpaid uploads are deleted after about 30 minutes. Paid audio files are kept for 7 days so you can download them, then deleted. Download your audiobook promptly — after it expires we can't recover it.
Don't use HirayaAI to infringe copyright, to process unlawful content, or to abuse the service (e.g. automated bulk uploads). We may refuse or cancel conversions that violate these terms and may report unlawful activity where required.
The service is provided "as is". AI narration isn't perfect — pronunciation and pacing may vary. We do our best, but we can't guarantee uninterrupted service, and our total liability to you is limited to the amount you paid for the conversion in question.
If you believe content processed through HirayaAI infringes your rights, see our copyright & takedown page. We respond to valid complaints and remove infringing material.
We may update these terms as the service evolves. Continued use after a change means you accept the updated terms. Questions? Email [email protected].
Last updated: June 12, 2026