Question Base vs Slab (2026): which should you pick?

Pick Question Base if

• Fits if your team asks the same questions in Slack all day and your docs are already in Confluence, Drive or Notion
• Works for departments that can commit to a yearly plan

Look elsewhere if

• Skip it if you want a free plan or a self-serve trial, as there is neither
• Pricey if you are one person or a small team, because Annual Pro starts at $6,000 a year
• Not for you if you don't use Slack, since that is where it works
• Watch out: the proof of concept is a 2-month commitment, and HIPAA and AWS deployment need Enterprise+

Pick Slab if

• Fits if your team is 10 or fewer and you want a wiki without paying
• Works for non-profits and schools, who can ask for the Startup plan free

Look elsewhere if

• Skip it if people need to read the wiki on their phones, as no mobile apps are listed
• Pricey if most of your company only reads, because there are no read-only seats
• Not for you if you need SAML SSO, SCIM or the API below Business at $12.50 a user; audit logs are Enterprise only
• Tight if you stay free, with no private topics, no AI, 10 MB attachments and 10 integrations
• Watch out: guests are capped at 3 per user on Startup and 5 on Business

Question Base

• It works inside Slack; the price page shows no self-serve plan or free tier.
• Every plan is booked through a demo or sales, with a $6,000 yearly minimum for Annual Pro.
• The pricing page states the proof of concept is a 2-month commitment.
• HIPAA compliance and AWS deployment are Enterprise+ only.

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.

Question Base

Answers in Slack

Detects questions in channels and answers from connected documentation, without needing an @mention.

Doc connections

Reads Confluence spaces and pages, Google Drive files and Notion pages and databases.

Saves new knowledge

Summarizes answers and decisions shared in Slack so they can be saved to docs.

FAQ from answers

Creates an FAQ from questions answered in Slack.

Analytics and security

Annual Pro adds performance analytics; the pricing page cites SOC 2 Type II security.

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.

Question Base

• Proof of Concept$1,000

  for 2 months, paid once

  Hands-on implementation, ROI calculation, 10,000 pages across integrations. Typical scope is a single channel.

• Annual Pro$6,000

  per year and up, at $5 per user / month, billed annually

  One team or department, 200 pages per seat of integrated data, unlimited questions and channels, performance analytics. Booked through a demo.

• Enterprise+$20,000

  per year and up, at $15 per user / month, billed annually

  Custom source integrations, deployment in your AWS, white-labeling, multi-workspace Slack, HIPAA compliance as stated. Sold through sales.

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.

Question Base

No public discounts listed.

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.