Three tools. One mission: help your team find information when they need it. But how each one goes about it is completely different.
Notion wants to be your whole operating system — docs, wiki, databases, project management, all in one flexible workspace. Confluence is the enterprise standard — built for technical teams that need structure, permissions, and Jira integration. Slab is the focused alternative — a dedicated knowledge base that does one thing well without the complexity.
We spent time in all three — creating docs, organizing spaces, testing search, and evaluating AI features. Here's how they stack up for a small business team.
Quick Verdict
Notion wins for flexibility. If you want one tool to replace your wiki, docs, and project manager, nothing else comes close. Confluence wins for technical teams already using Jira. Slab wins for teams that just want a clean, fast knowledge base without the overhead of a general-purpose platform.
1. At a Glance
| Dimension | Notion | Confluence | Slab |
|---|---|---|---|
| Starting Price | Free | Free (10 users) | Free (10 users) |
| Paid From | $10/user/mo | $5.42/user/mo | $6.67/user/mo |
| Free Tier | ⭐⭐⭐ Limited for teams | ⭐⭐⭐ 10 users, 2GB | ⭐⭐⭐⭐ 10 users, generous |
| AI Features | ⭐⭐⭐⭐ Agents, Search | ⭐⭐⭐ Rovo (Premium) | ⭐⭐⭐ AI Ask, Autofix |
| Ease of Use | ⭐⭐⭐⭐⭐ Very easy | ⭐⭐⭐ Learning curve | ⭐⭐⭐⭐⭐ Clean & fast |
| Permissions | ⭐⭐⭐ Basic (Business+) | ⭐⭐⭐⭐⭐ Page-level | ⭐⭐⭐⭐ Topic-level |
| Best For | All-in-one flexibility | Engineering teams | Dedicated KB, best value |
2. Pricing — Where the Differences Start
Notion
Free: Unlimited blocks for individuals, limited for teams (7-day version history). Plus ($10/user/mo): Unlimited blocks, 30-day history, custom sites, unlimited file uploads. Business ($20/user/mo): AI features, SAML SSO, private teamspaces, page analytics, domain verification. Enterprise: Custom — SCIM, audit logs, customer success manager.
Notion's pricing is straightforward per-seat, but the AI features you'll actually want (Notion Agents, Enterprise Search) require the Business plan at $20/user/mo. That's expensive for a 20-person team ($400/mo).
Confluence
Free: Up to 10 users, 2 GB storage, community support. Standard ($5.42/user/mo): 250 GB, advanced permissions, guest access, 9/5 support. Premium ($10.44/user/mo): Unlimited storage, Rovo AI, 99.9% SLA, 24/7 support. Enterprise: Annual, custom pricing.
Confluence is cheaper per-seat than Notion on Standard and Premium, but the AI features (Rovo) are Premium-only. A 20-person team on Premium costs ~$209/mo vs Notion Business at $400/mo.
Slab
Free: Up to 10 users, 90-day version history, unlimited posts. Startup ($6.67/user/mo billed annually): Unlimited users, guests, 365-day history, AI features. Business ($12.50/user/mo): SAML SSO, SCIM, premium integrations, priority support. Enterprise: Custom, audit logs, dedicated support.
Slab is the cheapest option for teams that need a dedicated knowledge base. A 20-person team on Startup costs ~$133/mo. The free tier is actually usable long-term for micro-teams.
Pricing reality check: If you compare apples-to-apples (a 20-person team with AI features), you're looking at Notion Business ($400/mo), Confluence Premium (~$209/mo), or Slab Business ($250/mo). Slab wins on value, Notion wins on versatility, Confluence wins on ecosystem depth.
3. Knowledge Base Approach — Philosophy Matters
This is where the three tools diverge most. They have fundamentally different philosophies about what a knowledge base should be.
Notion gives you a blank canvas and says "build whatever you want." You can create a wiki, a documentation hub, a knowledge base with linked databases, or any combination. The flexibility is unmatched — but without discipline, your knowledge base becomes a chaotic mess. You need to design your information architecture upfront, or hire someone to do it.
Confluence gives you a structure and says "fit your knowledge into it." Spaces, pages, templates, permissions — everything has a place. The template library (PRDs, meeting notes, engineering docs) is the best in class. The trade-off is that Confluence feels rigid compared to Notion. You work within the structure, not beyond it.
Slab says "keep it simple." Topics and posts. That's it. No databases, no blocks, no complex hierarchies. The search is fast enough that you don't need deep folder structures. Slab's philosophy is that a knowledge base should be a place you search, not a place you browse. It's the most opinionated of the three — and for teams that just want answers fast, that's a feature, not a bug.
4. AI Features — The New Battleground
Notion AI (Business plan, $20/user/mo) includes Notion Agents that complete multi-step tasks, Enterprise Search across connected apps (Slack, GitHub, Jira), AI Meeting Notes, and the standard AI write/summarize/translate features. The Agents feature is genuinely impressive — you can ask it to "find all action items from last week's meetings and create a summary doc" and it does it.
Confluence Rovo (Premium plan, $10.44/user/mo) brings AI search, chat, and agents across Confluence and Jira. Rovo can answer questions about your docs, summarize pages, and suggest related content. It's solid but not as advanced as Notion's Agents. The tight Jira integration is the differentiator — Rovo can answer questions about your sprint status, not just your docs.
Slab AI (Startup plan, $6.67/user/mo) includes AI Ask (Q&A against your knowledge base), AI Autofix (cleans up formatting), and AI Predict (suggests content based on patterns). It's the most basic of the three, but it covers the essentials. AI Ask is surprisingly good at finding answers across your posts.
"Notion's Agents are the most advanced AI feature in this comparison, but they require the most expensive plan. Slab's AI Ask is simple, useful, and available at $6.67/user/mo."
5. Learning Curve
Slab is the easiest to pick up. Topics and posts, a clean editor, fast search. Your team will be contributing within minutes. Notion has the gentlest initial learning curve (the block editor is intuitive), but mastering it — building databases, setting up relationships, creating dashboards — takes weeks. Confluence has the steepest learning curve. Understanding spaces vs pages vs templates vs permissions takes real effort.
Winner depends on your team: Slab for "just use it," Notion for "invest in learning," Confluence for "we have an admin."
6. Permissions & Governance
Confluence is the clear winner here. Page-level permissions, space-level permissions, group-based access, anonymous access controls — it has everything you need for compliance-heavy environments. Notion has improved: Business plan adds private teamspaces, granular database permissions, and page verification, but still no page-level permissions on lower tiers. Slab uses topic-level permissions — simpler than Confluence but sufficient for most small businesses.
7. Integrations
Notion connects directly to Slack, GitHub, Jira, Asana, Google Drive, and hundreds more via its API and public integrations. The new Enterprise Search feature indexes connected apps. Confluence integrates deeply with the Atlassian ecosystem (Jira, Bitbucket, Opsgenie) and has a large marketplace with 1,000+ apps. Slab has 10 standard integrations (Slack, GitHub, Google Workspace, Okta, Zapier, etc.) and 3 premium integrations on the Business plan — sufficient but limited.
8. Pros & Cons
Notion
👍 Pros
- Most flexible — wiki, docs, PM in one
- Best AI features (Agents, Enterprise Search)
- Beautiful block editor, easy to write
- Huge template gallery
👎 Cons
- AI features require $20/user/mo plan
- Can become chaotic without structure
- Weak permissions on lower tiers
- Mobile experience is mediocre
Confluence
👍 Pros
- Best-in-class permissions & governance
- Deep Jira integration
- Excellent template library
- Rovo AI connects docs + Jira data
👎 Cons
- Steep learning curve
- Interface feels dated
- AI requires Premium plan
- Overkill for non-technical teams
Slab
👍 Pros
- Clean, fast, focused
- Best price for dedicated KB
- Generous free tier (10 users)
- Quickest time-to-adoption
👎 Cons
- Not as flexible as Notion
- Fewer integrations than competitors
- No native mobile app
- AI features are basic
9. Verdict
• Your team is willing to invest in setup and structure
• You'll use the Business plan for AI features
• Flexibility matters more than finding things fast
• You need enterprise-grade permissions and compliance
• You want structured templates for engineering docs
• You have someone to admin the tool
• Quick adoption and fast search are your priorities
• You're a team of 10-100 and value matters
• You don't need Notion's all-in-one flexibility
Our honest take: For most small businesses, the choice comes down to Notion vs Slab. Confluence is the best tool for engineering teams using Jira, but it's overkill and over-complicated for most other use cases. Notion wins if you want the Swiss Army knife — one tool that does everything. Slab wins if you want a tool that does one thing exceptionally well: help your team find answers fast. Both are excellent. The wrong choice is buying Confluence because it's "what enterprises use" when your team is 15 people who just need a simple wiki.