Glean
Permission-aware search and AI agents across everything your company already uses.
Glean indexes a company's tools — Slack, Drive, Jira, Salesforce, and a hundred-plus others — into a single knowledge graph, then answers questions and runs agents against it while mirroring each user's actual permissions. Founded by Arvind Jain, a former Google Search distinguished engineer, it has become the reference implementation for enterprise RAG: ARR went from $100 million to a reported $300 million in roughly fifteen months, and the company says Glean Agents is pacing toward a billion agent actions a year.
Best for
Companies past roughly a thousand employees whose knowledge is scattered across dozens of SaaS tools and who lose real money to 'where is that doc' friction. Below about 100 seats, reported contract minimums make it a non-starter.
Microsoft 365 Copilot searches Microsoft's world well and everyone else's poorly; ChatGPT Enterprise reasons brilliantly over whatever you paste into it. Glean's bet is the boring middle: a hundred-plus connectors, a per-user permissions mirror, and a knowledge graph that ranks results by how your organization actually works. It is infrastructure-neutral in a way neither Microsoft nor OpenAI can credibly be.
Core features
Enterprise search
A company-specific knowledge graph ranks people, documents, and activity signals — not just keyword matches — across every connected tool.
AI assistant
Questions over internal knowledge answered with citations back to source documents, filtered through the asker's own access rights.
Workplace connectors
Prebuilt integrations for 100+ SaaS tools with permission sync — the coverage moat rivals have to rebuild connector by connector.
Pros
- + Hundred-plus connectors feed one knowledge graph, so a single query spans Slack, Drive, Jira, Salesforce, and the long tail
- + Answers mirror each user's live permissions — the single feature that gets AI past enterprise security review
- + Glean Agents extends search into automation, with the company reporting a pace of a billion agent actions a year
Watchouts
- - No public pricing and reported ~100-seat minimums shut out smaller teams and make budgeting a negotiation
- - Answer quality tracks the freshness of what's indexed — stale wikis produce confident, current-sounding wrong answers
Alternatives
Frequently asked
What is Glean?
Permission-aware search and AI agents across everything your company already uses.
Who builds Glean?
Glean is built by Glean.
How much does Glean cost?
Glean uses enterprise. Current tiers: Custom quote — reported ~$50/user/mo, ~100-seat minimum. Check the official site before buying — AI pricing changes often.