Documentation.AI vs Fern
Documentation.AI
documentation.aiFern
buildwithfern.comSide by side
| Figure | Documentation.AI | Fern |
|---|---|---|
| Price from | $55/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 2 |
| Spec score · Developer Documentation Software | 8.9 (#3) | 8.7 (#5) |
| Spec score · AI Documentation Generators | 8.9 (#4) | 8.7 (#8) |
| Access control | Documentation can be public, password-protected, or private with JWT or OAuth 2.0; SSO with SAML/OIDC and SCIM are Enterprise plan features. | Fern supports documentation access through password protection, SSO, JWT, or OAuth, with role-based access control. |
| Company | Documentation.AI is a product of Keevs Health Inc., a Delaware corporation headquartered in Alpharetta, Georgia. | Fern identifies itself as Birch Solutions, Inc., a Postman company, and says it was born in Brooklyn, New York. |
| Integrations | Connectors listed by the product include GitHub, GitLab, Jira, Confluence, Linear, Notion, HubSpot, Plain, Intercom and reader feedback. | Listed integrations include PostHog, Google Analytics, Segment, Mixpanel, FullStory, Intercom, Postman, and Context7. |
| Rating on G2 | 4.5 out of 5 from 25 reviews | 5.0 out of 5 from 1 review. |
| Security | The privacy policy describes encryption in transit and at rest, least-privilege controls, audit logging, routine backups, and hashed passwords. | Fern's trust center lists SOC 2 Type II, GDPR, and CCPA and provides access requests for its SOC 2 report, penetration test summary, and information security policy. |
| Support | Standard includes Slack support; Pro adds priority support and a private Slack channel; Enterprise includes dedicated support. | The Enterprise plan includes dedicated support and an uptime SLA. |
| What it does | Documentation.AI creates and publishes product documentation, knowledge bases, API references and help centers, with AI that drafts updates from product sources. | Fern turns API definitions and Markdown into hosted documentation sites, SDKs, and command-line tools. |
Plans
Documentation.AI
- StarterFree
- Standard$55 a month
- Pro$159 a month
- EnterprisePriced on request
In their own words
Documentation.AI
Documentation.AI combines an AI documentation agent, review workflows, publishing, and AI access for technical documentation. Teams can write in a visual web editor or use Markdown and MDX in Git repositories with pull-request previews. OpenAPI specifications generate API reference pages with request and response examples plus a live playground. Agent and workflow changes arrive as drafts or commits for review instead of publishing automatically. The platform includes an in-document assistant with cited answers, a Reader MCP server, and generated llms.txt. GitHub, GitLab, Jira, and Confluence can supply context, while analytics and chat integrations include Google Analytics 4, PostHog, Intercom, and Crisp. Documentation may be public, password-protected, or private with JWT or OAuth 2.0; SAML/OIDC SSO and SCIM are Enterprise features. AI work pauses when credits run out until the next cycle or a top-up, with no overage billing stated. Starter is free; Standard costs $55 a month billed yearly, and Pro costs $159 a month billed yearly.