Castmagic vs ChapterGen
Castmagic
castmagic.ioChapterGen
chaptergen.comSide by side
| Figure | Castmagic | ChapterGen |
|---|---|---|
| Price from | $1.58/mo | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| API | Yes | — |
| Plans published | 4 | 3 |
| Spec score · Podcast Show Notes Software | 7.9 (#8) | 8.1 (#6) |
| Limits | Hobby, Starter, and Team include 30, 100, and 400 transcribed library hours respectively; each lists unlimited file uploads, a 10GB maximum file size, and 50 concurrent uploads. | The homepage upload prompt lists MP4, MOV, WebM, MP3, WAV, and M4A files up to 500 MB; the FAQ lists additional supported formats. |
| Purpose | Castmagic turns long-form audio and video into transcripts and ready-to-use content such as show notes, summaries, blogs, social posts, and newsletters. | ChapterGen generates YouTube chapters from uploaded video or audio files. |
Plans
Castmagic
- Hobby$19 a year
- Starter$579 a year
- Business & Scale$699 a month
- Team$1,669 a year
In their own words
Castmagic
Castmagic converts long-form audio and video into transcripts and drafts such as show notes, summaries, blogs, social posts, and newsletters. Transcription supports more than 60 languages, with speaker labels, timestamps, translation, and SRT, VTT, PDF, and DOCX exports. Recurring prompts, brand voice settings, and custom prompts can generate a content set when recordings arrive. Studio creates image carousels, captioned clips in 9:16, 1:1, or 16:9 formats, and audiograms. Its content strategist answers questions across recordings, cites source moments, and drafts weekly content plans. The library connects with Zoom, Loom, Google Drive, RSS, and Zapier, and imports from YouTube, Spotify, Apple Podcasts, TikTok, Instagram, Vimeo, Twitch, Reddit, and Wistia. A REST API imports recordings and retrieves transcripts and generated content; a Claude connector can access a library. The iOS app records into a space or captures voice memos. Castmagic runs on web, iOS, and API. Plans start at $19/mo (annual), with no free plan. Listed hour allowances are 30 for Hobby, 100 for Starter, and 400 for Team.
ChapterGen
ChapterGen generates YouTube chapters from uploaded video or audio files. It transcribes the audio, detects topic shifts, identifies sections, and creates chapter titles. Because it works from uploads, creators can prepare chapters for unpublished, private, or unlisted videos without providing a public YouTube URL. Audio-only material such as podcasts, interviews, and voice recordings is supported. Users can edit titles and timestamps before copying the output, which starts at 0:00 and is formatted for a YouTube video description. The FAQ lists MP4, MOV, AVI, WebM, MKV, MP3, WAV, M4A, AAC, OGG, and FLAC, with a maximum file size of 500 MB. The site's Whisper-based AI auto-detects language and supports 90+ languages. The homepage says uploads are deleted automatically after processing. The Free plan costs nothing and allows 2 videos of up to 20 minutes each, with no signup. Paid one-time plans are $5, paid once for 5 videos and $12, paid once for 15 videos. ChapterGen is a web tool.