Glean vs Truffle

Glean

Glean is the reference implementation of permission-aware enterprise search, and permissions are the hard part everyone else underestimates. It is also priced so that only companies with a real sprawl problem can justify it.

Pros

• +Permission inheritance from each connected system is done properly, not approximated
• +Answers cite and link the underlying documents rather than paraphrasing them away
• +Connector coverage across the mainstream SaaS estate is broad
• +Commercially solid: about $300M ARR by May 2026 at a $7.2B valuation

Cons

• −No published price anywhere, and contracts start in six figures
• −Value depends entirely on connector coverage of your specific stack
• −Index quality inherits whatever mess exists in the source systems
• −Overlaps increasingly with Microsoft and Google's bundled offerings, which cost nothing extra

Truffle

A reasonable fit for a team tired of answering the same onboarding or process questions in Slack every week, since it learns from real past answers instead of a manually written FAQ. It only works inside Slack, so it isn't useful if a team's knowledge lives elsewhere.

Pros

• +Learns from actual past Slack answers instead of requiring someone to write a FAQ from scratch
• +Generates documentation as a byproduct of normal Slack conversation
• +Free community plan removes cost for non-profit Slack communities

Cons

• −Locked entirely to Slack; no support for other chat tools or a standalone knowledge base
• −Free tier's 15-answer monthly cap is tight for any team above a handful of people

Is Glean cheaper than Truffle?

Truffle starts at $199/mo; Glean prices on request, so a quote is the only way to compare.

Does Glean or Truffle have a free tier?

Truffle has a free tier; Glean prices on request.

Which has a public API, Glean or Truffle?

Glean ships a public API, as of our last verification. A public API for Truffle is not confirmed by us — check its developer docs before you plan an integration.