Developer Tools · head to head
Nixpacks vs Restate
Nixpacks
Developer Tools
Build system that turns a source directory into an OCI image, now in maintenance mode
- From
- Free
- Rated
- -
Restate
Developer Tools
Durable execution engine in Rust with a free tier and low-latency workflows
- From
- Free
- Rated
- -
The short version
- Each has a real cost: 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.; Restate the runtime is under a Business Source Licence rather than an open source licence, so building a competing managed offering on it is prohibited and some procurement functions will reject it on licence grounds alone.
- They diverge on capability: Nixpacks covers Automatic language detection, Restate covers Durable execution.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Nixpacks and Restate actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Developer Tools).
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 Nixpacks
- Automatic language detection
- No Dockerfile required
- Nix toolchains
- Configuration escape hatches
- Docker layer caching
Only in Restate
- Durable execution
- Virtual objects
- Single binary runtime
- Multi-language SDKs
- Workflows and sagas
- Restate Cloud
What people use each for
The jobs each tool is most often brought in to do.
Nixpacks
- Understanding the build behaviour of a platform that adopted Nixpacks before it was frozennot Restate
- Producing container images from a polyglot monorepo where nobody wants to own several Dockerfilesnot Restate
- Reproducing an existing Railway build locally while planning a migration to Railpacknot Restate
- Comparing what a Nix based builder does differently from a buildpack before choosing a successornot Restate
Restate
- Payment or order flows where a crash between two external API calls must not double-charge or lose the ordernot Nixpacks
- AI agent loops that call tools over minutes or hours and must survive a deployment mid-runnot Nixpacks
- Replacing hand-rolled retry, idempotency key and outbox code across a set of microservicesnot Nixpacks
- A small team that wants durable workflows without operating a Temporal cluster and its databasenot Nixpacks
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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.
Restate
- The runtime is under a Business Source Licence rather than an open source licence, so building a competing managed offering on it is prohibited and some procurement functions will reject it on licence grounds alone.
- Restate Cloud jumps from a free fifty thousand actions straight to 300 US dollars a month for twenty million, so a workload sitting at a few hundred thousand actions pays enterprise-shaped money for hobby-shaped volume.
- It is a young project against Temporal’s established base, so hiring engineers who already know it is unrealistic and the answer to most questions is in the docs rather than on Stack Overflow.
- The programming model requires structuring code around durable handlers and virtual objects, which is a genuine rewrite for existing services rather than a library you add.
- The single-binary simplicity that makes small deployments cheap also means fewer operational knobs at very large scale than a system designed as separable components.
Pricing, plan by plan
Nixpacks
Free- NixpacksFree
- MIT licensed, no usage limits
- No commercial edition and no support contract
- In maintenance mode, superseded by Railpack
Restate
Free- FreeFree
- Fifty thousand durable actions per month
- No credit card required
- Community support
- Starter$300/month
- Twenty million actions per month
- Two hundred actions per second, bursting to one thousand
- Twenty GB storage
- Pro$1000/month
- Fifty million actions per month
- Five hundred actions per second, bursting to two thousand
- Fifty GB storage
- Enterprise$undefined/year
- Negotiated volume
- Twenty-four seven P0 support
- 99.99 per cent SLA
Which should you pick?
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.
Choose Restate if
- You need durable execution.
- You want to start without paying.
- You work on Linux, macOS, Web.
- You also want virtual objects.
Questions people ask
- Is Nixpacks or Restate better?
- Neither clearly leads. Nixpacks starts at Free and Restate at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Nixpacks or Restate?
- Nixpacks starts at Free and Restate at Free.
- Does Nixpacks or Restate run on more platforms?
- Nixpacks runs on Linux, macOS, CLI, Docker. Restate runs on Linux, macOS, Web.
- Can I use Nixpacks for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Nixpacks best used for?
- Nixpacks is most often used for understanding the build behaviour of a platform that adopted nixpacks before it was frozen, producing container images from a polyglot monorepo where nobody wants to own several dockerfiles, reproducing an existing railway build locally while planning a migration to railpack, comparing what a nix based builder does differently from a buildpack before choosing a successor. Of those, understanding the build behaviour of a platform that adopted nixpacks before it was frozen and producing container images from a polyglot monorepo where nobody wants to own several dockerfiles are not what Restate is typically brought in for.
- What can Nixpacks do that Restate cannot?
- Nixpacks covers Automatic language detection, No Dockerfile required, Nix toolchains, Configuration escape hatches. Restate covers Durable execution, Virtual objects, Single binary runtime, Multi-language SDKs.
Answered from the vendors’ own pages
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.
Restate: Is Restate open source?
The SDKs are MIT. The runtime is under a Business Source Licence, which permits self-hosting but not offering it as a competing service.
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.
Restate: How does it compare with Temporal?
Same problem, different shape: one Rust binary with embedded storage instead of a server plus database plus workers, and lower per-step latency.
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.
Restate: Is there a free tier?
Yes, fifty thousand durable actions a month on Restate Cloud with no card required.
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.
Restate: Which languages are supported?
TypeScript, Java, Kotlin, Go, Python and Rust.
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