Glean
The best enterprise search we've deployed, if you have the budget and an IT team to own the rollout. Overkill for teams under 150 people.
Glean is enterprise search built for companies with too much content in too many systems. It indexes Drive, Slack, Notion, Jira, Confluence, GitHub and 100+ others, respects source-system permissions, and layers a chat interface on top of retrieval that actually cites its sources. It's the category leader for mid-market and enterprise, and priced accordingly.
Best for
- Mid-market and enterprise teams (200+ employees) drowning in fragmented internal knowledge
- Companies where senior staff have become human search engines
- Organizations with real compliance needs (regulated industries, EU operations)
- Buyers who will actually tune retrieval — set-and-forget Glean underperforms
- Teams already on Okta/SSO with clean Drive and Slack permission hygiene
Not ideal for
- Teams under 100 people — the price per seat won't pencil out
- Companies with messy source permissions — garbage in, cross-team leaks out
- Buyers looking for a self-serve tool with a weekend rollout
- Workspaces where 80%+ of knowledge lives in one app (use that app's native search first)
Where Glean wins — and where it doesn't
Glean is the right answer for mid-market and enterprise teams whose senior staff have become human search engines — but it's the wrong first buy for a 50-person agency, even one that "feels" like it has a knowledge problem. The real signal for Glean is that your VP has opened the same Slack channel, Drive folder, and Notion page three times this week to answer the same question. Below 150 seats, most teams get 80% of the benefit from tightening Notion/Drive hygiene and native search — and save $60K/year doing it.
Where Glean wins hard is permission-aware retrieval. Most competitors in the category either ignore source permissions or require a fragile manual sync; Glean inherits cleanly from Google Workspace, Okta, and SharePoint groups. That's the feature buyers are actually paying for. If your source systems have messy permissions — stale guest access, legacy Drive shares, inconsistent Slack channel privacy — fix that first, or Glean will cheerfully expose every mistake across the org.
On pricing, list is roughly $40–$100/user/mo but the real lever is annual commit and connector scope. Public buyer reports suggest 25–40% off is a reasonable target on 24-month commits with a tight connector scope — limiting to the 5 systems you actually use beats the "everything connected" default, which ends up paying for Jira indexing nobody searches. Start narrow, expand once adoption proves itself. Revisit the decision if you drop below 100 active users or if your source permissions can't be cleaned up — in both cases, a lighter-weight alternative like Dust usually wins on ROI.
Native integrations
Security & deployment
SOC 2 Type II and ISO 27001 certified, with permission inheritance from source systems and a full admin audit log. EU and US data residency options are available on enterprise tiers. BYOK and VPC deployment exist for the largest customers — confirm pricing tier before assuming access.
Implementation complexity
medium
Time to value
weeks
Strengths
- Permission-aware retrieval that actually works — rare in this category
- 100+ native connectors with real permission inheritance — wider than any competitor we've deployed against
- Answer quality on long-tail internal queries is materially better than Notion AI or SharePoint Copilot
- Strong admin controls and audit log for regulated buyers
- Expert finder is a genuinely differentiated feature
Tradeoffs
- Price — entry tiers are in the five-figures annual range before you see ROI
- Rollout requires security review and IT sponsorship; not a team-lead decision
- Relevance tuning matters — teams that skip this phase blame the tool
- Chat interface is table stakes now; the moat is retrieval, not UX
Worth comparing against
Notion AI
Notion AI is the AI layer built into Notion workspaces — Q&A over your pages, drafting assistance inline, and summaries across databases. It's the easiest 'AI over our docs' you can buy because it's already installed wherever Notion is the wiki. It's also the shallowest option if your knowledge lives outside Notion.
Dust
Dust is a European RAG-and-agents platform that sits between Notion AI's simplicity and Glean's enterprise complexity. It indexes your docs, Slack, Drive, and Notion, hosts custom assistants per team, and gives admins more control than Notion while costing materially less than Glean. Strong story for EU buyers who want a consultancy-grade tool without US-only residency.
See also: Glean vs Notion AI
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