Fern
7.8#1 in api generation softwareFree planFree planWebAPILinuxmacOS
VisitFern vs Theneo
What both publish
| Fact | Fern | Theneo |
|---|---|---|
| AI tools | Fern offers AI search, a writing agent, AI translations, an MCP server, and 250 AI credits on the Free plan. | The platform offers AI-generated documentation, Ask AI answers, automated release summaries, MCP, and llms.txt support. |
| CLI requirements | The current CLI installation documentation requires Node.js 22 or newer and supports npm or Homebrew installation. | The CLI documentation requires Node.js 18 or newer and installs with npm install -g @theneo/cli@latest. |
| Integrations | Listed integrations include PostHog, Google Analytics, Segment, Mixpanel, FullStory, Intercom, Postman, and Context7. | Documented integrations include GitHub or GitLab synchronization, Postman import, Bitbucket synchronization, Slack and Microsoft Teams support, Okta and Microsoft Entra ID. |
| Public API | Fern exposes a REST API for Ask Fern configuration, custom context and FAQs, usage, and analytics, authenticated with organization API keys. | The sample API exposes REST endpoints for creating, retrieving, updating and deleting API documentation and uses an Api-Key header. |
Fern plans
- FreeFree
- EnterprisePriced on request
Theneo plans
- Starter PackageFree
- Business (annual)$120 a month
- Business$120 a month
- Business (monthly)$150 a month
- Growth$400 a month
- Growth (annual)$400 a month
Pick Fern if…
Fern may suit teams producing API documentation and client libraries from specifications. The access controls, analytics, AI tools, and enterprise self-hosting options may also fit organizations with varied documentation needs.
Pick Theneo if…
Theneo suits teams that publish API documentation and need collaboration tools or customer-specific portals. Its free Starter plan may suit smaller projects, while self-hosting is listed for Enterprise.