Bolt.new vs Fragments

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Free plan: Both — Bolt.new has a free plan, Fragments is free to use
Best fit: Bolt.new: Founders and designers who want a clickable prototype or landing page the same afternoon · Fragments: Developers who want to build their own Artifacts-style app generator
Trust score: About even — Bolt.new 85, Fragments 87
Status: Both up at our last check — Bolt.new Sep 6, 2026, Fragments Oct 2, 2026

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

Bolt.newIn-browser agent that builds and runs web apps

FragmentsOpen-source Next.js app that turns prompts into runnable apps in sandboxes, a self-hostable take on Claude Artifacts.

Side by side

Fact	Bolt.new	Fragments
Category	Vibe Coding & App Generators	Vibe Coding & App Generators
Pricing model	Freemium	Free
Starts at	$25/mo	—
Trust score	85 / 100	87 / 100
Platforms	Web	Web
Company	StackBlitz, Inc.	FoundryLabs, Inc. (E2B)
Launched	—	2024
Last verified	Sep 6, 2026	Oct 2, 2026

What our research says

Bolt.new

Bolt is the quickest way to get from a sentence to a running web app you can click, and Bolt Cloud now removes the usual 'where does this deploy' problem for small projects. Treat the token meter as the real price: a complex app burns through the entry allowance fast, and the free tier is for trying the product, not shipping from it.

Pros

Whole toolchain runs in the browser, so there is no environment to set up or keep alive
Starts from a prompt, Figma design, GitHub repo or template, and exports back to GitHub
Bolt Cloud bundles hosting, databases and auth, which most prompt-to-app tools leave to you
Unused Pro tokens roll over, unlike most rivals' monthly allowances

Cons

Token-based pricing is hard to forecast; one long debugging session can eat days of allowance
Free tier is throttled daily (300K tokens) and carries Bolt branding
Yearly discount is advertised without the actual yearly prices on the page
No public API found, so Bolt cannot be driven from a script or CI

Fragments

Best treated as a starter kit rather than a finished product: it shows how to build a chat-to-app builder with sandboxed execution, and gives you a working base to fork. Skip it if you just want a polished hosted app builder.

Pros

Apache-2.0 license with an active public repository
Runs generated Python, Next.js, Vue, Streamlit and Gradio apps in isolation
Works with many model providers, including local Ollama
Easy to add your own stacks and models

Cons

Requires an E2B account and an LLM key to run anywhere
Hosted demo is a showcase, not a supported service
No dedicated pricing or support of its own

Which one fits

Choose Bolt.new if you need

Founders and designers who want a clickable prototype or landing page the same afternoon
Developers scaffolding a front end or internal tool before taking it into their own editor
Teams turning a Figma mock into a working front end without hand-coding the first pass

Choose Fragments if you need

Developers who want to build their own Artifacts-style app generator
Teams prototyping AI code execution inside isolated sandboxes
Anyone who wants to try several LLM providers behind one code-gen UI