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Developer Tools · head to head

PartyKit vs Yoti

P

PartyKit

Developer Tools

Platform for building and deploying realtime multiplayer servers on the edge

From
Free
Free plan
Yes
Full reviewWebsite
Yoti logo

Yoti

Cybersecurity

Reusable digital identity, facial age estimation and identity verification

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only PartyKit has a free tier, so it costs nothing to try first.
  • Each has a real cost: PartyKit documentation and FAQ material on the marketing site is sparse compared to larger realtime platforms.; Yoti age estimation returns a probabilistic range rather than a verified date of birth, so it only works with a safety buffer above the legal threshold and cannot prove an exact age.
  • They diverge on capability: PartyKit covers Stateful edge servers, Yoti covers Facial age estimation.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which PartyKit and Yoti actually diverge.

Attributes where PartyKit and Yoti differ
AttributePartyKitYoti
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
Platformsweb, apiWeb, iOS, Android, API
CategoryDeveloper ToolsCybersecurity

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 PartyKit

  • Stateful edge servers
  • WebSocket-first API
  • CRDT library compatibility
  • Framework integrations
  • Global edge deployment
  • Custom domains

Only in Yoti

  • Facial age estimation
  • Reusable digital ID
  • Identity verification
  • UK right to work and rent
  • Digital ID for retail
  • Selective disclosure

What people use each for

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

PartyKit

  • Multiplayer collaborative appsnot Yoti
  • Realtime AI agent backendsnot Yoti
  • Live cursors and presencenot Yoti
  • Collaborative whiteboards and documentsnot Yoti

Yoti

  • A social platform meeting UK Online Safety Act age assurance duties without collecting identity documents from teenagersnot PartyKit
  • A supermarket removing staff interventions at self-checkout for age-restricted purchasesnot PartyKit
  • A UK employer running digital right-to-work checks under the certified trust framework rather than inspecting passportsnot PartyKit
  • A gambling operator needing an age gate with high completion rates before the account funding stepnot PartyKit

Where each one falls short

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

PartyKit

  • Documentation and FAQ material on the marketing site is sparse compared to larger realtime platforms.
  • Commercial free tier requires deploying to the user's own Cloudflare account, adding setup complexity.
  • Storage on the free Individual plan clears every 24 hours, limiting it to prototyping rather than persistent production data.
  • Smaller ecosystem and community than more established realtime infrastructure providers.

Yoti

  • Age estimation returns a probabilistic range rather than a verified date of birth, so it only works with a safety buffer above the legal threshold and cannot prove an exact age.
  • Estimation accuracy varies by demographic and reported error margins widen at the age bands that matter most for eighteen-year thresholds, which pushes borderline users into a document fallback you still have to pay for.
  • Pricing is not published, so buyers cannot compare the cost of an estimation check against a document check without going through sales.
  • Regulatory acceptance of facial estimation differs by jurisdiction, so a method that satisfies Ofcom may not satisfy a regulator elsewhere and multi-market platforms need more than one approach.
  • The reusable digital identity app depends on consumer adoption, which is meaningful in the UK and thin elsewhere, limiting the reusability benefit outside its home market.

Pricing, plan by plan

PartyKit

Free
  • IndividualFree
    • Up to 10 live projects
    • Deploy to the global edge platform
    • Storage clears every 24 hours
  • CommercialFree
    • Unlimited projects
    • Custom domains
    • Runs on your own Cloudflare account; pay only Cloudflare usage

Yoti

On request
  • Yoti Age and Identity Services$undefined/year
    • Per-check pricing quoted by volume and method
    • Age estimation, document verification and digital ID priced differently
    • Right to work and right to rent checks quoted separately

Which should you pick?

Choose PartyKit if

  • You need stateful edge servers.
  • You want to start without paying.
  • You work on web, api.
  • You also want websocket-first api.
PartyKit review

Choose Yoti if

  • You need facial age estimation.
  • You work on Web, iOS, Android, API.
  • You also want reusable digital id.
Yoti review

Questions people ask

Is PartyKit or Yoti better?
Neither clearly leads. PartyKit starts at Free and Yoti at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PartyKit or Yoti?
PartyKit has a free tier; the other does not. Paid plans start at Free for PartyKit and On request for Yoti.
Does PartyKit or Yoti run on more platforms?
PartyKit runs on web, api. Yoti runs on Web, iOS, Android, API.
Can I use PartyKit for free?
Yes. PartyKit has a free tier, so you can try it without paying. Yoti starts at On request.
What is PartyKit best used for?
PartyKit is most often used for multiplayer collaborative apps, realtime ai agent backends, live cursors and presence, collaborative whiteboards and documents. Of those, multiplayer collaborative apps and realtime ai agent backends are not what Yoti is typically brought in for.
What can PartyKit do that Yoti cannot?
PartyKit covers Stateful edge servers, WebSocket-first API, CRDT library compatibility, Framework integrations. Yoti covers Facial age estimation, Reusable digital ID, Identity verification, UK right to work and rent.

Answered from the vendors’ own pages

PartyKit: How much does PartyKit cost?

PartyKit is completely free. Both the Individual and Commercial plans have no upfront costs.

Source
Yoti: Does age estimation store my face?

The image is used to produce an estimate and then deleted rather than retained, which is the specific property that makes it usable for age assurance on minors.

PartyKit: What is PartyKit's Individual plan?

The Individual plan is free and includes deployment to a global edge platform, support for up to 10 live projects, and is suitable for small projects. Storage is cleared every 24 hours.

Source
Yoti: Is it accepted for UK Online Safety Act compliance?

Facial age estimation is one of the methods regulators have accepted as highly effective age assurance. Confirm the current position with your own counsel for your content category.

PartyKit: What is PartyKit's Commercial plan?

The Commercial plan is free but requires deploying to your own Cloudflare account. It includes custom domains, unlimited projects, and you pay only your Cloudflare usage costs.

Source
Yoti: Can it prove someone is exactly 21?

No. It gives a range. If you need a precise age you need a document or database check, which Yoti also sells.

PartyKit: Can I upgrade from Individual to Commercial plan?

Yes, both plans are free but offer different feature sets. The Commercial plan removes project restrictions but requires managing your own Cloudflare infrastructure.

Source
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