vioscale
API MockingUnclaimed

Prism

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Also known as
prism

Available worldwide

What is Prism?

A tool that generates mock HTTP servers from OpenAPI v2 and v3 documents, enabling frontend and backend teams to develop in parallel. It supports request and response validation, dynamic example generation, callbacks, and can function as a validation proxy to identify discrepancies between API documentation and implementation.

Independently observed

Prism pricing

Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.

Pricing as of verify at live pricing ↗Independently observed
from $11/moHybridFree tier14-day trial

Free open-source version. Stoplight SaaS: from $44/month (Basic). Free 14-day trial.

Free

Free
Free
min 1 seats

Open-source, self-hosted version

users
1
projects
1
  • API editor
  • OpenAPI/JSON schema visual designer
  • Code-based editing
  • Local mock servers
  • API console
  • Technical knowledge base
  • 24x7 knowledge base access

Basic

$44/month (annually) or $56/month; includes 3 users, $11 per additional user
annual · min 3 seats

Design an API as an individual

users
3
projects
Unlimited
  • OpenAPI/JSON schema visual designer
  • Interactive docs
  • Instant mock servers
  • Code-based editing
  • Schema reuse
  • Design validation
  • Git sync
  • OpenAPI export
  • Automatic mock servers
  • Request validation
  • Configurable response codes

Startup

$113/month (annually) or $147/month; includes 8 users, $11 per additional user
annual · min 8 seats

Build an API program for small teams

users
8
projects
Unlimited
  • All Basic features
  • Private projects
  • Multi-branch support
  • Custom domains, theming and favicon
  • Google Analytics integration
  • Approved email domains
  • Automatic changelogs
  • Dependency graph

Pro Team

$362/month (annually) or $453/month; includes 15 users, $22 per additional user
annual · min 15 seats

Govern APIs across your organization

teams
20
users
15
projects
Unlimited
  • All Startup features
  • Shared style guides
  • Workspace groups
  • Remove Stoplight branding
  • Self-hosted Git providers
  • Activity logs
  • LDAP & SAML SSO
  • Component Libraries
  • User management and RBAC
  • Per-project user access
  • Workspace teams

Enterprise

Contact sales
Contact sales
annual

Your API program at scale

teams
Unlimited
users
Unlimited
projects
Unlimited
  • All Pro Team features
  • Custom payment terms
  • Invoicing
  • Priority support

Platform & deployment

Independently observed
Platforms
  • CLI
  • Web
Deployment
  • Cloud / SaaS
  • Self-hosted

Integrations (7)

Independently observed
  • GitHub
  • GitLab
  • Azure DevOps
  • Bitbucket
  • LDAP
  • SAML SSO
  • Google Analytics

Prism alternatives

Other api mocking we track, ranked by the same independent score.

All Prism alternatives, ranked →

Compare Prism

Side by side against other api mocking, attribute by attribute, with a source on every value.

Independent · unbought · dated

The Vioscale score: one lens on the evidence

Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Prism, not the verdict.

Balanced composite 77 / 100
high · 78%updating
Signal contributions to the composite score
SignalScoreWeightContributionEvidence
Pricing transparency1000.088.4✓
Price level800.054.2✓
Integrations240.041.0✓
Reliability00.070.0-
Capabilities00.050.0-
Security posture50.070.0-

Computed . Re-weight it by intent, or see the full method.

All data & sourcesshow ↓

Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.

Integrations

AttributeValueEvidence
Count6mediumsource · 2026-08-17 · 60%

Market

AttributeValueEvidence
AvailabilityPrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: …highsource · 2026-08-17 · 75%

Pricing

AttributeValueEvidence
Free tierYesmediumsource · 2026-08-17 · 60%
Price levellowmediumsource · 2026-08-17 · 60%
TransparentYesmediumsource · 2026-08-17 · 60%
Modelfreemiummediumsource · 2026-08-17 · 60%

Security

AttributeValueEvidence
GdprYeshighsource · 2026-08-17 · 75%