See how Slab's knowledge base and wiki software works, what the Startup and Business plans cost, and how it compares to Notion and Confluence.
Slab is a knowledge base and internal wiki tool designed to give teams a single, well-organized home for documentation, onboarding guides, meeting notes, and process docs. It was founded in 2016 by Anvisha Pai, Chengyin Liu, and Jason Chen and is based in San Francisco.
The product's core pitch is speed and clarity: a minimal editor that avoids the clutter of block-based, do-everything workspace tools, paired with search fast enough to make Slab a genuine first stop when someone needs an answer rather than a place documentation goes to become outdated.
Slab is commonly chosen by engineering, product, design, and operations teams who tried a general-purpose tool like Notion or a heavier platform like Confluence and wanted something narrower and more purpose-built for a team wiki.
Slab's editor supports rich text, code blocks, embeds, and templates, with real-time collaborative editing so multiple people can work on a document simultaneously.
Unified search is Slab's standout feature: it indexes not just Slab's own posts but connected tools like Slack, Google Drive, GitHub, and Salesforce, so a single search bar can surface an answer no matter where it originally lived.
Organization is handled through topics (Slab's equivalent of folders or spaces) that can be public or private, along with a 90 to 365-day version history depending on plan so teams can track how documents evolved.
On higher tiers, Slab adds AI-assisted writing tools (Autofix for grammar and formatting, Predict for auto-complete, and Ask for question-answering over the knowledge base), plus enterprise controls like SAML single sign-on, SCIM user provisioning, custom domains, and a GraphQL API for building custom integrations.
Slab's Free plan supports up to 10 users plus a small number of guests per user, with 10MB attachment limits and 90 days of version history, making it usable for very small teams evaluating the product.
The Startup plan costs $6.67 per user per month billed annually (roughly $40/month billed monthly for the first block of users) and removes the user cap while adding private topics, larger attachments, and longer version history.
The Business plan costs $12.50 per user per month billed annually and adds the AI feature set, unlimited version history, custom domains, SAML SSO, SCIM provisioning, and priority support with an SLA. Enterprise pricing is custom and requires a minimum of 100 users, with dedicated support and fully customizable terms. Every paid plan includes a 30-day money-back guarantee.
Slab is used as a team knowledge base and internal wiki for documentation, onboarding guides, meeting notes, and process docs.
Slab has a free plan for up to 10 users, a Startup plan from $6.67/user/month billed annually, a Business plan at $12.50/user/month billed annually, and custom Enterprise pricing for 100-plus users.
Slab was founded in 2016 by Anvisha Pai, Chengyin Liu, and Jason Chen, and is headquartered in San Francisco, California.
Yes, the Business plan includes AI tools called Autofix, Predict, and Ask for writing assistance and question-answering over the knowledge base.
Slab focuses specifically on knowledge base and wiki use cases with unified cross-tool search, while Notion is a broader workspace tool with databases, task boards, and more flexible page structures.
Slab offers a simpler, faster editor and search experience aimed at smaller and mid-size teams, while Confluence targets larger enterprises with deeper administrative and permission controls.
Yes, Slab integrates with Slack both for search indexing and for posting or sharing documents directly in Slack channels.
Slab's paid plans come with a 30-day money-back guarantee rather than a separate trial period, letting teams try a paid tier risk-free.