Both tools chosen. Compare is enabled.
Compare
Glean vs Perplexity
A plain-English comparison to help you choose between them.
The whole decision is which corpus holds your answer. Glean indexes the organisation's applications and answers with citations, showing each person only what their permissions allow, so the knowledge sprawl across drives, wikis, tickets and chats becomes one queryable surface. Perplexity answers from the open web with numbered, checkable citations, and Deep Research turns autonomous reading across hundreds of sources into a structured report. Pick Glean when the answer already exists inside the company and nobody can find it, and Perplexity when it exists in the world and you need it current and cited; most organisations of any size eventually want both, because those are genuinely different questions.
Side by side
- Summary
Glean is enterprise search that respects who you are: it indexes the organisation's applications and answers questions with citations, showing each person only what their permissions allow.
- Best for
- Search across the organisation's applications at once
- Permission-aware answers that respect access rights
- Cited answers grounded in company content
- Cost
- Enterprise
- Ease
- Openness
- Hosted service
- Data
- Glean indexes your company systems with permissions preserved; its security model is the product, review it accordingly.
- Summary
Perplexity is an answer engine: ask, and it returns a direct, current answer with numbered citations to the sources it used.
- Best for
- Direct answers with numbered, checkable citations
- Deep Research reports built from hundreds of sources
- Staying current on fast-moving topics
- Cost
- Freemium (Free tier + paid plans)
- Ease
- Openness
- Hosted service
- Data
- For confidential workflows use Enterprise (SOC 2 Type II, never trains on customer data, automatic file deletion); verify each cited figure against the linked source before acting.
Pricing
- Glean
Custom·Custom
Prices as of August 2026.
- Glean Core Suite
- Price on applicationno list price published
- Glean Model Hub Usage
- Price on applicationusage billed at API rates
- Perplexity
Free·$20·$200
Prices as of August 2026.
- Free
- Free
- Pro
- $20per month
- Max
- $200per month
By area
Where each one pulls ahead, area by area.
| Area | Glean | Perplexity |
|---|---|---|
| Search & knowledge retrieval | the answer lives inside your company's own tools | Perplexity searches the world |
Common questions
Can Perplexity cover internal knowledge with uploaded files?
Partly, and the limit matters. Uploaded files join the web as evidence and Spaces organise ongoing work, which covers a project's documents well. What it cannot do is span the estate under each person's permissions, which is Glean's entire architecture: connectors, indexing and permission-aware answers across every application at once, not a folder someone remembered to upload.
What scale does Glean assume before it is worth it?
Enterprise scale, explicitly. The connectors, indexing and governance assume hundreds of seats and a real IT function, and the procurement matches. Below that, workspace-native AI covers most of the need at a fraction of the ceremony, and a small team buying Glean is buying an operating model rather than a search box.
What quality problem do both share?
Neither invents good sources. Glean's answers inherit the estate's hygiene, so stale documents produce well-cited stale answers. Perplexity's citations lower the risk of invention without removing it, since sources can be misread or thin. In both cases the citation is an invitation to check rather than a guarantee, and load-bearing claims still deserve the click.
Related comparisons
Read the full guides
Where to start
Not sure what to adopt first?
Five quick questions about your job, task and constraints. We'll suggest your top three tools, plus the one to try first.
Tool facts last checked August 2026