Stoplight is a aPI & developer docs tool for Developers and Enterprise, offered as freemium ($56/mo). Founded in United States in 2015. Popular alternatives include Redocly, Postman, SwaggerHub.
About Stoplight
Stoplight is an API design, documentation and governance platform, founded in Austin, Texas, and acquired by SmartBear in 2023. It serves API-first organizations that design APIs before writing code, so teams agree on contracts early and keep documentation, mocks and implementations in sync.
Stoplight Studio provides a visual OpenAPI editor that lets people design endpoints, models and examples without hand-writing YAML, with Git sync to keep specs in repositories. Prism, its open-source mock server, generates mock APIs from specs so frontend and backend teams can work in parallel. Spectral, Stoplight's widely used open-source linter, enforces API style guides automatically, and Stoplight's governance features apply shared rules across teams and projects. Hosted documentation with interactive try-it consoles and reusable shared components round out the platform. A free plan covers individuals, while team plans add more users, projects, private docs and governance features.
Stoplight fits organizations with several API teams that need consistent design and governance. Paid tiers are expensive for small teams, and since the SmartBear acquisition some customers have been uncertain about how it will evolve alongside SwaggerHub. Postman is the broader API platform for testing and collaboration, SwaggerHub is SmartBear's other design tool, and Redocly, Bump.sh and Mintlify are popular for documentation. Spectral and Prism remain useful on their own even if you do not use the hosted platform.
Key features of Stoplight
- Visual API design
- Mock servers
- Style guides (Spectral)
- Hosted docs
- Git sync
- Governance
Pros and cons
Pros
- Design-first workflow
- Spectral linting
- Mocking
- Governance
Cons
- Pricey tiers
- SmartBear integration changes
- UI heavier
- Learning curve
Stoplight pricing
Stoplight uses a freemium model. A 14-day free trial is available.
| Plan | Price | Includes |
|---|---|---|
| Free | $0 | 1 user, 1 project |
| Basic | $56 / mo | $44/mo billed annually; 3 users, unlimited projects |
| Startup | $147 / mo | $113/mo billed annually; 8 users |
| Pro Team | $453 / mo | $362/mo billed annually; 15 users, up to 20 teams |
| Enterprise | Custom | — |
Source: stoplight.io · checked on Oct 20, 2026
How Stoplight compares in API & developer docs
- Rank by votes
- #2 / 16
- Starting price
- $56
- Free alternatives
- 4
0 votes from members
49% above the category median ($38/mo)
Free or open-source tools in API & developer docs
Stoplight ranks #2 of 16 api & developer docs tools by community votes and is priced above most tools in the category.
Common use cases
- 1API design reviews
- 2Mocking for frontends
- 3Governance across teams
- 4Docs
Best for
API-first organizations.
Not ideal for
Small projects.
Integrations
- GitHub
- GitLab
- Bitbucket
- OpenAPI
Our take
Stoplight is strong for design-first API teams.
FAQ
- What is Stoplight?
- Stoplight is a API & developer docs tool: API design, docs and governance.
- How much does Stoplight cost?
- Stoplight uses a Freemium model; paid plans start at $56 per month.
- What are the best alternatives to Stoplight?
- Community-listed alternatives to Stoplight include Redocly, Postman, SwaggerHub, Apidog.
- Does Stoplight have a free trial?
- Yes, Stoplight offers a 14-day free trial.
- What does Stoplight integrate with?
- Stoplight integrates with GitHub, GitLab, Bitbucket, OpenAPI and more.
- Which platforms does Stoplight support?
- Stoplight is available on web.
- Who is Stoplight for?
- API-first organizations.
Alternatives to Stoplight
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Freemium · $12DevelopersSmall businessesBump.sh
▲ 0Hosted API docs, changelogs and MCP servers from OpenAPI and AsyncAPI
Paid · $50DevelopersSmall businessesInsomnia
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