Slab review

Slab is a wiki that stays out of the way. Every plan, including the free one for up to ten users, has unlimited posts and topics, realtime collaboration, templates, verification and unified search across connected tools. Startup costs $6.67 per user per month on annual billing and removes the user cap, adds private topics, 365 days of version history, unlimited standard integrations and AI Autofix. Business, at $12.50, adds custom domains, AI Predict and AI Ask, SAML-based SSO, SCIM provisioning, premium integrations, a GraphQL API and webhooks. The narrow scope is the point: it does not try to be a project tool or a database, which keeps pages easy to find and write. That same scope means there is no customer-facing help center, and the AI answer feature sits on the higher tier. For an internal knowledge base that small teams will keep current, it is among the best values we compared.

Who it is for

Small and midsize teams that want a clean internal wiki people actually read, without a heavy setup.

Price

Free for up to 10 users; Startup $6.67 per user per month billed annually; Business $12.50.

Startup $ 6.67 user / month billed annually
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Unlimited posts and topics with realtime collaboration
• Content verification and templates on every plan
• Unified search across your connected tools
• AI Autofix on Startup, with AI Predict and AI Ask on Business
• SAML-based SSO, SCIM and custom domains on Business

Strengths and weaknesses

• Strength: Free plan for up to 10 users includes verification and unified search
• Strength: Startup plan allows unlimited users
• Strength: Simple editor that new writers learn quickly
• Weakness: AI Ask needs the Business plan
• Weakness: Free plan keeps only 90 days of version history
• Weakness: Internal wiki only, not a public help center

Key facts

• Free plan: Yes, up to 10 users
• Paid tiers: Startup, Business, Enterprise
• Enterprise minimum: At least 100 users

Where it ranks

Slab is No. 4 in our Best Knowledge Base Software verdict.