Castmagic vs Sonix
Side-by-side comparison of Castmagic and Sonix.
Turns audio and video into ready-to-publish content
Automated transcription that turns audio into searchable text
What they are
Castmagic
Castmagic ingests podcast episodes, video recordings, and audio files, then uses AI to produce transcripts, show notes, social posts, newsletters, and more from a single upload. Podcasters, course creators, and video producers use it to repurpose long-form content without manual editing. It covers the full repurposing workflow in one place, though the output still benefits from a human edit before publishing.
Sonix
Sonix is an automated transcription service that converts audio and video files into text using AI, then lets you search, edit, and export transcripts in multiple formats. Journalists, podcasters, researchers, and video producers use it to speed up post-production workflows. Transcription accuracy is solid for clear audio but drops noticeably with heavy accents or poor recording conditions. There is no free tier, so you pay from the first minute.
if you need transcription and ai writing. Starts at 21/mo.
- +Handles transcription and content generation in a single workflow
- +Supports multiple output types: show notes, social captions, newsletters, timestamps
- +Custom AI prompts let you tailor outputs to your own tone and format
if you need transcription. Starts at 25/mo.
- +Fast turnaround, typically a few minutes per hour of audio
- +In-browser transcript editor with time-coded text
- +Supports over 54+ languages
Which to choose
Castmagic and Sonix both cover transcription, so this is a real either-or for some teams. The right pick depends on which one's wider feature set and pricing fit how you work.
Read the full reviews for Castmagic and Sonix.
Pricing checked 5 Jun 2026.