Wordtune vs Castmagic
Side-by-side comparison of Wordtune and Castmagic.
AI sentence rewriter with multiple style options
Turns audio and video into ready-to-publish content
What they are
Wordtune
Wordtune, from AI21 Labs, is an AI rewriting tool that offers multiple alternatives per sentence with tone control, surfacing sharper, more formal, or more casual versions instantly. It is favoured by ESL writers and professionals who want to sound more natural. It deliberately skips grammar checking and chat, so it covers less ground than all-in-one rivals.
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.
if you need ai writing. Starts at 6.99/mo.
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
Which to choose
Wordtune and Castmagic both cover ai writing, 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 Wordtune and Castmagic.
Pricing checked 5 Jun 2026.