Nuclino vs Slab

Nuclino

• Small teams that want a simple wiki with little setup
• Keeping docs, light project boards and diagrams in one tool
• Mixed-platform teams: desktop apps cover Windows, macOS and Linux

Slab

• Teams of up to 10 that want a free internal wiki
• Companies that want one place to search docs and connected tools
• Non-profits and schools, which can get the Startup plan free

Nuclino

• The Free plan stops at 50 items, 3 canvases and 2 GB of total storage, and its plan table lists no version history.
• Every user is billed, including guests and read-only members, and upgrading moves the whole team to the paid plan.
• Sidekick AI, SAML single sign-on, the audit log and custom publishing domains are limited to the Business plan.
• Starter keeps 30 days of version history; unlimited history needs Business.

Slab

• The Free plan stops at 10 users and has no private topics, no custom domain and no AI features.
• SAML-based SSO, SCIM, the API and webhooks need Business at $12.50 per user / month billed annually; audit logs are Enterprise only.
• Slab has no read-only accounts: billing counts every user who can log in, and guests are capped at 3 or 5 per user below Enterprise.
• The downloads page offers desktop apps for Mac and Windows and a Chrome extension, but lists no mobile apps.

Nuclino

Collaborative items

Each item is a document that the team edits in real time, with room for notes, assigned tasks, flowcharts and embedded files. Hotkeys, slash commands and Markdown are supported.

List, board, table and graph views

The same workspace can be shown as a list for docs, a board for projects and tasks, a table that sorts and filters, or a graph for exploring how knowledge connects.

Canvas

An infinite canvas for whiteboards and diagrams can be added anywhere in a workspace. The Free plan allows up to 3 canvases; paid plans have no limit.

Sidekick AI

Answers questions from the team's own content, drafts and summarizes text, extracts action items and generates images. Sidekick is part of the Business plan.

Publishing

A workspace can be published as a website that search engines can find. Publishing starts on Starter, and a custom domain needs Business.

API and MCP server

An API is included on every plan, and an MCP server connects assistants such as Claude, ChatGPT and Cursor to the team's content.

Slab

Posts and Topics

Content is written as posts and grouped into Topics, which organize related posts and give readers context. Posts and topics are unlimited on every plan.

Real-time editor and templates

The editor applies consistent formatting by default and lets several people work on a post at once. Templates are included on every plan.

Unified Search

One search box returns results from Slab content and from the tools connected to it, so answers stored elsewhere surface in the same list.

Post verification

A published post can be given a verifier and a review interval. A banner shows who verified it and when that expires, and verifiers are reminded to recheck it.

AI Autofix, Predict and Ask

Slab lists three AI capabilities: AI Autofix from the Startup plan, and AI Predict and AI Ask from Business. The Free plan includes none of them.

Integrations, API and webhooks

Standard integrations such as Slack, GitHub and Google Workspace are capped at 10 on Free. The GraphQL API, webhooks and premium integrations start on Business.

Nuclino

• Free$0

  Up to 50 items, up to 3 canvases and 2 GB of total storage, with real-time collaboration, integrations and the API.

• Starter$6

  per user / month, billed yearly ($8 billed monthly)

  Unlimited items and canvases, admin tools, publishing, 30-day version history and 10 GB of storage per user.

• Business$10

  per user / month, billed yearly ($12 billed monthly)

  Sidekick AI, SAML single sign-on, audit log, team insights, a custom publishing domain, unlimited version history and 20 GB of storage per user.

Slab

• Free$0

  Up to 10 users with unlimited posts and topics, 90 days of version history, 10 MB attachments and 10 standard integrations.

• Startup$6.67

  per user / month, billed annually ($8 billed monthly)

  Unlimited users, 3 guests per user, private topics, AI Autofix, 365 days of version history, 25 MB attachments and unlimited standard integrations.

• Business$12.50

  per user / month, billed annually ($15 billed monthly)

  5 guests per user, custom domains, AI Predict and AI Ask, SAML SSO, SCIM, the GraphQL API, webhooks, 3 premium integrations and an uptime SLA.

• EnterpriseCustom

  For at least 100 users: unlimited guests and premium integrations, audit logs, advanced AI Ask and dedicated support.

Nuclino

• Annual discount

  Up to 25% off with yearly billing

  Starter is $6 per user a month billed yearly ($72 a year) against $8 billed monthly, a 25% saving. Business is $10 billed yearly ($120 a year) against $12.

Slab

• Annual discount

  About 17% lower with annual billing

  Startup is $6.67 per user a month billed annually against $8 billed monthly, and Business is $12.50 against $15.

• Nonprofit

  Startup plan free for nonprofits

  Nonprofits can request the Startup plan at 100% off or the Business plan at 50% off, after registering a free team.

• Education

  Startup plan free for educational use

  The same request form covers educational use: the Startup plan is 100% free and the Business plan is 50% off.