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Web Development · head to head

Bolt.new vs Nixpacks

Bolt.new logo

Bolt.new

Web Development

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

From
Free
Free plan
Yes
Full reviewWebsite
Nixpacks logo

Nixpacks

Developer Tools

Build system that turns a source directory into an OCI image, now in maintenance mode

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; Nixpacks the project is in maintenance mode with no commits on the default branch since May 2026 and no release since October 2025, so support for new language versions arrives only if someone forks it.
  • They diverge on capability: Bolt.new covers Full-stack app generation, Nixpacks covers Automatic language detection.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Bolt.new and Nixpacks actually diverge.

Attributes where Bolt.new and Nixpacks differ
AttributeBolt.newNixpacks
Pricing modelfreemiumOpen source, no licence fee
PlatformsWebLinux, macOS, CLI, 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 Nixpacks

  • Automatic language detection
  • No Dockerfile required
  • Nix toolchains
  • Configuration escape hatches
  • Docker layer caching

What people use each for

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

Bolt.new

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

Nixpacks

  • Understanding the build behaviour of a platform that adopted Nixpacks before it was frozennot Bolt.new
  • Producing container images from a polyglot monorepo where nobody wants to own several Dockerfilesnot Bolt.new
  • Reproducing an existing Railway build locally while planning a migration to Railpacknot Bolt.new
  • Comparing what a Nix based builder does differently from a buildpack before choosing a successornot 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

Nixpacks

  • The project is in maintenance mode with no commits on the default branch since May 2026 and no release since October 2025, so support for new language versions arrives only if someone forks it.
  • Build determinism is softer than it appears, because providers pin a nixpkgs archive commit and bumping that archive silently moves compiler and runtime versions underneath a build that looks unchanged.
  • Caching is limited to Docker layers rather than a content addressed graph, so a small change early in the build invalidates everything after it, which is exactly the limitation Railpack was rewritten to fix.
  • Images carry Nix store layers and come out larger than an equivalent tuned Dockerfile or buildpack output, which costs registry storage and slows cold pulls on scale-out.
  • There is no specification, no vendor neutral governance and no third party provider ecosystem, so a single company was able to redirect strategy and leave every downstream user with a frozen build tool.

Pricing, plan by plan

Bolt.new

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

Nixpacks

Free
  • NixpacksFree
    • MIT licensed, no usage limits
    • No commercial edition and no support contract
    • In maintenance mode, superseded by Railpack

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 Nixpacks if

  • You need automatic language detection.
  • You want to start without paying.
  • You work on Linux, macOS, CLI, Docker.
  • You also want no dockerfile required.
Nixpacks review

Questions people ask

Is Bolt.new or Nixpacks better?
Neither clearly leads. Bolt.new starts at Free and Nixpacks at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bolt.new or Nixpacks?
Bolt.new starts at Free and Nixpacks at Free.
Does Bolt.new or Nixpacks run on more platforms?
Bolt.new runs on Web. Nixpacks runs on Linux, macOS, CLI, 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 Nixpacks is typically brought in for.
What can Bolt.new do that Nixpacks cannot?
Bolt.new covers Full-stack app generation, Prompt-to-app creation, Real-time editing, Instant deployment. Nixpacks covers Automatic language detection, No Dockerfile required, Nix toolchains, Configuration escape hatches.

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
Nixpacks: Should I start a new project on Nixpacks?

No. The documentation and README both say it is in maintenance mode and recommend Railpack. Choose Railpack, Cloud Native Buildpacks or a Dockerfile instead.

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
Nixpacks: Will my existing Nixpacks builds stop working?

Not immediately. Pinned nixpkgs archives keep resolving, so builds continue. What you lose is support for new runtime major versions and any fix for a provider bug.

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
Nixpacks: What replaces it?

Railpack, also from Railway and also MIT licensed, rebuilt as a BuildKit custom frontend for finer grained caching and parallel steps.

Nixpacks: Is it still open source?

Yes, MIT, and the repository is not archived. Being open source does not help much when nobody is merging provider updates.

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