Developer Tools · head to head
Restate vs Zeta
Restate
Developer Tools
Durable execution engine in Rust with a free tier and low-latency workflows
- From
- Free
- Free plan
- Yes
Zeta
Technology
Cloud native credit card processing and core banking from Bhavin Turakhia's Zeta
- From
- On request
- Free plan
- No
The short version
- Only Restate has a free tier, so it costs nothing to try first.
- Each has a real cost: 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.; Zeta it competes against card processors with decades of production track record, and in card processing an outage is a public event, so a shorter operational history is a genuine risk factor rather than a technicality.
- They diverge on capability: Restate covers Durable execution, Zeta covers Tachyon card processing.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Restate and Zeta actually diverge.
Identical on both: 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 Restate
- Durable execution
- Virtual objects
- Single binary runtime
- Multi-language SDKs
- Workflows and sagas
- Restate Cloud
Only in Zeta
- Tachyon card processing
- Real time authorisation
- Rewards and offers engine
- Core banking modules
- Programme configuration
- Mobile and web SDKs
- Fraud and controls
- Cloud deployment
What people use each for
The jobs each tool is most often brought in to do.
Restate
- Payment or order flows where a crash between two external API calls must not double-charge or lose the ordernot Zeta
- AI agent loops that call tools over minutes or hours and must survive a deployment mid-runnot Zeta
- Replacing hand-rolled retry, idempotency key and outbox code across a set of microservicesnot Zeta
- A small team that wants durable workflows without operating a Temporal cluster and its databasenot Zeta
Zeta
- A United States bank whose card platform makes launching a new rewards product a multi quarter vendor projectnot Restate
- An issuer that wants authorisation level controls and real time data rather than end of day filesnot Restate
- A large fintech launching a credit card programme at scale with custom product logicnot Restate
- A bank consolidating card and deposit processing onto one modern platformnot Restate
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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.
Zeta
- It competes against card processors with decades of production track record, and in card processing an outage is a public event, so a shorter operational history is a genuine risk factor rather than a technicality.
- Contracts are enterprise scale and quoted with volume minimums, which puts it out of reach of small issuers who would otherwise benefit most from modern tooling.
- A card portfolio migration runs twelve to twenty four months at minimum, during which the issuer runs two platforms and pays for both.
- Zeta is a processor rather than a licence holder, so network membership, BIN sponsorship and regulatory obligations remain entirely with the issuer.
- Public references for large live United States production volumes are fewer than the announcements imply, so diligence should insist on active account counts and uptime history rather than partnership press releases.
Pricing, plan by plan
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
Zeta
On request- Tachyon platform$undefined/year
- Quoted per institution, commonly on active accounts or transaction volume
- Implementation for a card portfolio migration measured in quarters to years
- Minimum volume commitments typical on enterprise contracts
Which should you pick?
Choose Restate if
- You need durable execution.
- You want to start without paying.
- You work on Linux, macOS, Web.
- You also want virtual objects.
Choose Zeta if
- You need tachyon card processing.
- You work on Web, API, Cloud, iOS, Android.
- You also want real time authorisation.
Questions people ask
- Is Restate or Zeta better?
- Neither clearly leads. Restate starts at Free and Zeta at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Restate or Zeta?
- Restate has a free tier; the other does not. Paid plans start at Free for Restate and On request for Zeta.
- Does Restate or Zeta run on more platforms?
- Restate runs on Linux, macOS, Web. Zeta runs on Web, API, Cloud, iOS, Android.
- Can I use Restate for free?
- Yes. Restate has a free tier, so you can try it without paying. Zeta starts at On request.
- What is Restate best used for?
- Restate is most often used for payment or order flows where a crash between two external api calls must not double-charge or lose the order, ai agent loops that call tools over minutes or hours and must survive a deployment mid-run, replacing hand-rolled retry, idempotency key and outbox code across a set of microservices, a small team that wants durable workflows without operating a temporal cluster and its database. Of those, payment or order flows where a crash between two external api calls must not double-charge or lose the order and ai agent loops that call tools over minutes or hours and must survive a deployment mid-run are not what Zeta is typically brought in for.
- What can Restate do that Zeta cannot?
- Restate covers Durable execution, Virtual objects, Single binary runtime, Multi-language SDKs. Zeta covers Tachyon card processing, Real time authorisation, Rewards and offers engine, Core banking modules.
Answered from the vendors’ own pages
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.
Zeta: Which Zeta is this?
The banking technology company founded by Bhavin Turakhia, which builds the Tachyon card processing and core banking platform. Not any similarly named payroll or accounting product.
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.
Zeta: What is its strongest use case?
United States credit card issuing and processing, where legacy platforms make product changes slow and expensive.
Restate: Is there a free tier?
Yes, fifty thousand durable actions a month on Restate Cloud with no card required.
Zeta: Does Zeta provide the BIN or licence?
No. It processes. Network membership, BIN sponsorship and regulatory obligations stay with the issuer.
Restate: Which languages are supported?
TypeScript, Java, Kotlin, Go, Python and Rust.
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- Zeta vs Jitsu
- Zeta vs Okteto
- Zeta vs Argo CD
- Zeta vs Steampipe
- Zeta vs Cloud Native Buildpacks
- Zeta vs Deno
- Zeta vs Visual Studio Code
- Zeta vs Turborepo
- Zeta vs Keycloak
- Zeta vs Garden
- Zeta vs GitLab CI/CD
- Zeta vs HCP Terraform
- Zeta vs Helm
- Zeta vs Notepad++
- Zeta vs Finxact
- Zeta vs Thought Machine
- Zeta vs Alkami
- Zeta vs Apache Spark
- Zeta vs Nagios XI
- Zeta vs Shortcut
- Zeta vs Linear
- Zeta vs Datadog
- Zeta vs Greenhouse
- Zeta vs Google Chrome
- Zeta vs Mozilla Firefox
- Zeta vs Confluent Cloud
- Zeta vs Heap
- Zeta vs Microsoft Edge
- Zeta vs Netlify
- Zeta vs Productboard
- Zeta vs Sentry
- Zeta vs Trino