Auto-Audiobook
Auto-Audiobook is a free, MIT-licensed, self-hosted project that converts EPUB, MOBI, and PDF books into structured MP3 audiobooks.
What Auto-Audiobook is
Auto-Audiobook is a free, MIT-licensed, self-hosted project that converts EPUB, MOBI, and PDF books into structured MP3 audiobooks. It generates speech with MiMo-V2.5-TTS through an OpenAI-compatible API and requires a Xiaomi MiMo API key configured in an environment variable. The README lists four Chinese voices and four English voices, with voice selection and preview. Reading styles include Default, News, Story, Biography, and Knowledge. Auto-Audiobook can synthesize concurrently, resume at a chapter, process incrementally, and watch a directory for new files. Output is 256 kbps mono MP3 with ID3 title, author, and chapter tags. The project is optimized for Chinese and English and detects language from text samples. Rule-based text cleaning is the default and is described as having zero API cost; LLM-based cleaning is also available. Other TTS engines are not integrated by default and require modifying the synthesis function. The maker describes personal listening as the intended use and advises against uploading complete commercial readings publicly.
Good
- Supports EPUB, MOBI, and PDF input
- Chapter resume and incremental processing
- Directory watch automation
- Eight listed voice options
- Tagged 256 kbps mono MP3 output
Watch out
- Self-hosted installation required
- MiMo API key required
- Optimized for only two languages
- Other TTS engines need code changes
Who it suits
Auto-Audiobook suits technically comfortable users who can install a Python project locally and provide a MiMo API key. It is aimed at personal listening, especially for Chinese- and English-language books.
Verdict
Auto-Audiobook provides automated, chapter-aware audiobook creation with multiple voices and processing modes. Its self-hosted setup and MiMo-focused integration make it better suited to users comfortable managing the project themselves.
The facts
Each one read from Auto-Audiobook's own pages, with the date it was checked.
What it does
- Audio output
- Generated audio is 256 kbps mono MP3 with ID3 title, author, and chapter tags.checked 8 Oct 2026
- Automation
- Watchdog mode monitors a directory and processes new files automatically.checked 8 Oct 2026
- Cleaning
- Rule-based text cleaning is the default and is described as having zero API cost; LLM-based cleaning is also available.checked 8 Oct 2026
- Copyright guidance
- The README advises personal use and says not to upload full audiobooks to public platforms.checked 8 Oct 2026
- Integration limit
- The README says the software is deeply integrated with MiMo’s API and other TTS engines require modifying synthesizer.py.checked 8 Oct 2026
- Intended use
- The maker describes building it for personal listening and advises against uploading full audiobook readings of commercial publications to public platforms.checked 8 Oct 2026
- Languages
- The project says it is currently optimized for Chinese and English, with automatic language detection from text samples.checked 8 Oct 2026
- Language support
- The project says it is currently optimized for Chinese and English, with language detection based on text sampling.checked 8 Oct 2026
- License
- The project is licensed under MIT.checked 8 Oct 2026
- Other TTS engines
- The README says other TTS engines are not integrated by default and would require modifying the synthesis function.checked 8 Oct 2026
- Pricing
- The repository does not list Auto-Audiobook plans or prices; it notes that MiMo-V2.5-TTS was in a limited-time free trial when the README was written.checked 8 Oct 2026
- Processing
- It supports concurrent synthesis, chapter resume, incremental processing, and monitoring an input directory for new files.checked 8 Oct 2026
- Purpose
- Auto-Audiobook converts EPUB, MOBI, and PDF books into structured MP3 audiobooks.checked 8 Oct 2026
- Reading styles
- Available styles are Default, News, Story, Biography, and Knowledge.checked 8 Oct 2026
- Security
- The README requires a Xiaomi MiMo API key configured through an environment variable and does not describe security or compliance certifications.checked 8 Oct 2026
- Setup
- The README instructs users to install the Python project locally and provide a MiMo API key.checked 8 Oct 2026
- Speech engine
- It uses MiMo-V2.5-TTS through an OpenAI-compatible API.checked 8 Oct 2026
- Synthesis
- It uses MiMo-V2.5-TTS through an OpenAI-compatible API for concurrent audio synthesis.checked 8 Oct 2026
- Voice options
- The README lists four Chinese voices and four English voices.checked 8 Oct 2026
- Voices
- The README lists four Chinese voices and four English voices, with voice selection and preview.checked 8 Oct 2026
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