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PartyKit

Deployment platform for real-time multiplayer apps, AI agents, and local-first architectures.

Pricing

$0/mo

Free
Score

4.5/5

License
MIT
Last technical review
2026-10-29
Available plansVisit website (opens in a new tab)

Technical Overview

PartyKit is an open source deployment platform built for real-time collaborative applications, AI agents, and local-first software. It leverages web standards such as WebSockets and standard Request-Response APIs to synchronize state globally at the edge, integrating cleanly with existing technology stacks.

Analyst Evaluation: Pros and Limitations

Verified Advantages

  • Native support for WebSockets and open web standards.
  • Direct compatibility with popular CRDT and state libraries like Y.js.
  • Rapid local development and edge deployment workflows.

Technical Considerations

  • Free tier storage gets cleared automatically every 24 hours.
  • Requires familiarity with state management and JavaScript servers.

Technical Capabilities & Features

5/7
Included:REST & GraphQL API
Not available:SSO / SAML Authentication
Included:Self-Hosted Option
Included:Full Data Export
Included:Role-Based Access Control (RBAC)
Included:Custom Domains & SSL
Not available:Immutable Audit Logs
Scorecard
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Technical Scorecard: PartyKit

86/100
DX & Tech Documentation
Excellent
92/100
Pricing Fairness
Excellent
85/100
Security & Governance
Favorable
78/100
Data Portability & Sovereignty
Excellent
90/100
Performance & Reliability
Excellent
87/100

Time to Value & Fit by Segment: PartyKit

Estimated Time-to-Value< 1 hour (Immediate)

Near-instantaneous deployment with minimal technical friction.

Learning CurveModerate (Standard)

Requires consulting technical documentation and basic credentials setup.

Fit Index by Organization Size

Startup & Agile Teams1 to 50 members
90%
Mid-Market & Scaleup50 to 500 members
70%
Corporate Enterprise500+ members
50%
Pricing & TCO
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Pricing

$0.00/mo

Model: FREE.

Available plans:

  • Community / FreeCustom

Free Tier Verification:

  • No credit card required
  • Commercial use allowed
  • Monthly recurring quota reset
  • No mandatory watermarks
Get PartyKit (opens in a new tab)

Billing Risks & Hidden Clauses: PartyKit

Free Tier Limits:

Free tier available for small projects with edge deployment, though storage is cleared every 24 hours.

Audited Billing Critical Points:
  • Free tier persistence is ephemeral and storage gets cleared every 24 hours.
Total Cost of Ownership (TCO) Projection: PartyKit$0.00/mo
Deterministic cost estimation at 12 and 36 months based on team size, including SSO tax premiums and annual prepay discounts.
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Licensing Cost (1 to 100+ seats)
$0/forever
Unlimited team members with zero penalties
SSO Tax (SAML Enterprise)
$0no surcharge
No artificial security barriers
3-Year Investment (Software TCO)
$0total
operates under a zero-cost or open-source model. Licensing TCO is identical:
Usage Surcharges & Bill Shock Simulator: PartyKitWhat usage costs as you scale
Detect overage penalties before they impact engineering budget.
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Prototype / MVP (10 GB)

Included base quota in plan: 10 GB.
Low Risk / Predictable Bill
Base Monthly Rate
$0/mo
Fixed subscription or contracted tier
Overage Penalty
$0/month extra
Usage covered within plan quota
Estimated Monthly Invoice
$0/mo
Total monthly cost before taxes
Technical Mitigation Recommendation:

Suitable for development; verify concurrent connection limits.

Base Production (50 GB)

Included base quota in plan: 50 GB.
Low Risk / Predictable Bill
Base Monthly Rate
$0/mo
Fixed subscription or contracted tier
Overage Penalty
$0/month extra
Usage covered within plan quota
Estimated Monthly Invoice
$0/mo
Total monthly cost before taxes
Technical Mitigation Recommendation:

Implement table compression policies and temporal partitioning.

Active Growth (250 GB)

Included base quota in plan: 250 GB.
Low Risk / Predictable Bill
Base Monthly Rate
$0/mo
Fixed subscription or contracted tier
Overage Penalty
$0/month extra
Usage covered within plan quota
Estimated Monthly Invoice
$0/mo
Total monthly cost before taxes
Technical Mitigation Recommendation:

Offload cold backups to standard object storage (S3).

Large Scale (1.000 GB (1 TB))

Included base quota in plan: 1,000 GB.
Low Risk / Predictable Bill
Base Monthly Rate
$0/mo
Fixed subscription or contracted tier
Overage Penalty
$0/month extra
Usage covered within plan quota
Estimated Monthly Invoice
$0/mo
Total monthly cost before taxes
Technical Mitigation Recommendation:

Migrate to dedicated instance or self-hosted cluster to curtail I/O fees.

Security & Data Exit
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Compliance & Security Standards: PartyKit

SOC 2 Type IINot reported
ISO 27001Not reported
GDPR / RGPDNot reported
HIPAANot reported
PCI-DSSNot reported
Jurisdiction & Legal Sovereignty
🇺🇸United States [US]Subject to US CLOUD ActDPA On Request
SSO Availability (SAML Enterprise)
No SSO Documented
Data Residency
GLOBALCloudflare
AI Privacy Policy
Not evaluated
Data Liberation & Migration Runbook: PartyKitJAVASCRIPT SOURCE CODE
Actionable escape runbook and credential export guarantees to mitigate vendor lock-in.
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Supported Structured Export Formats
JAVASCRIPT SOURCE CODE
Password Hash Portability
Locked: Proprietary Algorithm / No Export

Credential hashes are guarded under proprietary algorithms and cannot be exported.

CLI Command / Rescue Endpoint
Standard Git repository export
Exit Protocol & Migration Notes

Al estar construido sobre estándares web abiertos y WebSockets, la lógica de servidor puede trasladarse a cualquier entorno Node.js o Cloudflare Workers estándar.

Deployment & Infrastructure Requirements: PartyKitMIT
Hardware specs and Docker directives to run on local servers, dedicated VPS, or Kubernetes without telemetry leak to the cloud.
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Minimum Memory1 GB RAM (Recommended)
Compute CPU1 vCPU
Runtime / LanguageTypeScript
Code LicenseMIT
Docker CLI Directive
docker run -d --name partykit -p 8080:8080 partykit:latest
Companion Services & Dependencies:
PostgreSQL 15+Redis 7+
Community & Repository
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Technical Reputation of PartyKit

85/100 Technical Trust

Frequent Praises in Production

  • Native support for WebSockets and open web standards.
  • Direct compatibility with popular CRDT and state libraries like Y.js.
  • Rapid local development and edge deployment workflows.

Reported Production Frictions

  • Free tier storage gets cleared automatically every 24 hours.
  • Requires familiarity with state management and JavaScript servers.
Commercial Treatment & Vendor Lock-in:1-Click Cancellation

Immediate cancellation from account settings without phone calls or forced retention.

Open source repository activity: PartyKit5,742
Stars, forks and release cadence
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Stars5.7k
Forks206
Open Issues92
SPDX LicenseMIT
Latest Commit DetectedOct 9, 2026

Frequently Asked Technical Questions (PartyKit)

How do you install PartyKit in a project?

You can install PartyKit using npm by running the command npm install partykit in your project directory terminal.

Which synchronization libraries are supported?

PartyKit works out of the box with popular collaboration frameworks and state libraries including Y.js, Automerge, Replicache, and TinyBase.

Where can PartyKit applications be deployed?

Applications can be deployed to the global edge platform or directly to your own Cloudflare account using the CLI.

Direct Alternatives

All tools in PartyKit
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