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Web Development · head to head

Bolt.new vs Swagger UI

Bolt.new logo

Bolt.new

Web Development

Prompt, run, edit, and deploy full-stack web apps

From
Free
Free plan
Yes
Full reviewWebsite
Swagger UI logo

Swagger UI

Developer Tools

Interactive API documentation generated from OpenAPI specs

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Bolt.new the free plan is capped at 300K tokens a day and 1M tokens a month; Swagger UI only as good as the specification: a thin OpenAPI file produces thin documentation
  • They diverge on capability: Bolt.new covers Full-stack app generation, Swagger UI covers OpenAPI rendering.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Bolt.new and Swagger UI actually diverge.

Attributes where Bolt.new and Swagger UI differ
AttributeBolt.newSwagger UI
Pricing modelfreemiumOpen source, no licence fee
PlatformsWebWeb, Self-hosted, Docker
CategoryWeb DevelopmentDeveloper Tools
Founded2017Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Bolt.new

  • Full-stack app generation
  • Prompt-to-app creation
  • Real-time editing
  • Instant deployment
  • Screenshot to UI
  • Multi-framework support
  • Live preview
  • Code export

Only in Swagger UI

  • OpenAPI rendering
  • Try it out
  • Schema display
  • Self-hostable

What people use each for

The jobs each tool is most often brought in to do.

Bolt.new

  • Rapid prototypingnot Swagger UI
  • MVP developmentnot Swagger UI
  • UI mockup creationnot Swagger UI
  • Full-stack app generationnot Swagger UI
  • Proof of conceptnot Swagger UI

Swagger UI

  • Publishing API documentation that stays in step with the specificationnot Bolt.new
  • Letting developers try endpoints before writing any client codenot Bolt.new
  • Internal API discovery across teamsnot Bolt.new

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Bolt.new

  • The free plan is capped at 300K tokens a day and 1M tokens a month
  • Pro starts at 10M tokens a month for $25, so heavy sessions are metered rather than unlimited
  • Team seats are billed at $30 per member per month and tokens are not pooled across the team
  • Unused tokens roll over for one additional month only, so they expire after two

Swagger UI

  • Only as good as the specification: a thin OpenAPI file produces thin documentation
  • Default presentation is dated compared with modern documentation tools
  • Large specifications render slowly and become hard to navigate
  • Try it out against production needs care with authentication and CORS, and is often disabled as a result

Pricing, plan by plan

Bolt.new

Free
  • FreeFree
    • Limited generations
    • Basic templates
    • Public projects
  • Pro$20/month
    • Unlimited generations
    • Advanced AI models
    • Private projects

Swagger UI

Free
  • Swagger UIFree
    • Full functionality
    • Commercial use permitted
    • Community support

Which should you pick?

Choose Bolt.new if

  • You need full-stack app generation.
  • You want to start without paying.
  • You also want prompt-to-app creation.
Bolt.new review

Choose Swagger UI if

  • You need openapi rendering.
  • You want to start without paying.
  • You work on Web, Self-hosted, Docker.
  • You also want try it out.
Swagger UI review

Questions people ask

Is Bolt.new or Swagger UI better?
Neither clearly leads. Bolt.new starts at Free and Swagger UI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bolt.new or Swagger UI?
Bolt.new starts at Free and Swagger UI at Free.
Does Bolt.new or Swagger UI run on more platforms?
Bolt.new runs on Web. Swagger UI runs on Web, Self-hosted, Docker.
Can I use Bolt.new for free?
Both have a free tier, so you can try either at no cost before committing.
What is Bolt.new best used for?
Bolt.new is most often used for rapid prototyping, mvp development, ui mockup creation, full-stack app generation. Of those, rapid prototyping and mvp development are not what Swagger UI is typically brought in for.
What can Bolt.new do that Swagger UI cannot?
Bolt.new covers Full-stack app generation, Prompt-to-app creation, Real-time editing, Instant deployment. Swagger UI covers OpenAPI rendering, Try it out, Schema display, Self-hostable.

Answered from the vendors’ own pages

Bolt.new: Can I use Bolt for free indefinitely?

Bolt invites users to 'Try it out and start building for free', indicating a free option is available. However, the page mentions two tiers (Standard and MaxPro) and includes a '/pricing' link, suggesting paid plans exist. Specific details about free tier limits and paid pricing are not on the main page.

Source
Swagger UI: Is Swagger UI free?

Yes, open source under the Apache 2.0 licence. SmartBear sells commercial SwaggerHub separately.

Bolt.new: What are the differences between Standard and MaxPro tiers?

The page mentions both 'Standard' (described as 'Recommended for general development') and 'MaxPro' tiers in feature comparisons, but does not disclose specific differences, pricing, or what qualifies as 'general development' vs. other use cases.

Source
Swagger UI: What is the difference between Swagger and OpenAPI?

OpenAPI is the specification format; Swagger is the toolset around it, including Swagger UI. The specification was renamed from Swagger to OpenAPI in 2016.

Bolt.new: Are there usage limits on the free tier?

The page does not specify what limits apply to the free tier. To obtain detailed information about free tier limits and paid plan features, you would need to visit the dedicated pricing page.

Source
Swagger UI: Can Swagger UI make real API calls?

Yes, through its try-it-out control, though authentication and CORS configuration often mean it is disabled for production APIs.

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