Bolt.new vs Castmagic
Side-by-side comparison of Bolt.new and Castmagic.
Type a prompt, get a full-stack app in minutes
Turns audio and video into ready-to-publish content
What they are
Bolt.new
Bolt.new is a browser-based AI app builder by StackBlitz that generates, runs, and deploys full-stack web applications from a plain-text prompt, with no local setup required. It uses WebContainers to execute code live in the browser, supports multiple JavaScript frameworks, and integrates with Supabase, GitHub, Figma, Netlify, and Stripe. Pricing runs on a token consumption model, where larger and more complex projects burn through allocations faster than simple prototypes. The free tier is genuinely usable for experiments, but the daily token cap makes it impractical for sustained development work.
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 coding. It has a usable free tier to start with.
- +Zero local setup: code runs live in the browser via WebContainers
- +Generates full-stack apps, not just UI snippets, from a single prompt
- +Supports multiple AI models including Claude Opus 4.6 and newer
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
Bolt.new and Castmagic solve different problems, so most people would not choose between them directly. The comparison below helps if you are weighing where to spend budget, or deciding whether you need both.
Read the full reviews for Bolt.new and Castmagic.
Pricing checked 10 Jun 2026.