Glean vs Signal87 AI

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

Signal87 AI

Signal87 leans hard on traceability: every answer is supposed to link back to a specific page and paragraph in your own documents, which matters for legal and government-contract work where an unsupported answer is a liability. It has moved from sales-only to flat self-serve plans at $20 and $50 a month, so a small team can now test it on a real document set; the vendor is still young, founded in 2025, with little independent track record.

Pros

• +Every answer ties back to a page- and paragraph-level citation in the source document
• +Handles mixed formats, including PDFs, Word, Excel and scanned files, in one vault
• +Flat self-serve pricing, $20 for 100 documents or $50 unlimited, with no per-question metering
• +Five-day free trial with no card required

Cons

• −Founded in 2025, so there is little independent track record to check
• −The 100-document cap on the cheaper plan is tight for a real contract archive
• −No public API found for wiring it into other systems

Is Glean cheaper than Signal87 AI?

Signal87 AI starts at $20/mo; Glean prices on request, so a quote is the only way to compare.

Which has a public API, Glean or Signal87 AI?

Glean ships a public API, as of our last verification. A public API for Signal87 AI is not confirmed by us — check its developer docs before you plan an integration.