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Glean vs iGPT

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Free plan
iGPT has one; Glean prices on request
Public API
Both have one
Higher Trust score
Glean — 90 vs 83 for iGPT
Best fit
Glean: Organisations above roughly 500 people whose knowledge is scattered across a dozen SaaS tools · iGPT: People whose real knowledge base is their inbox and shared drive
Platforms
Glean: Web, Slack app, Chrome extension · iGPT: Web

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

GleanPermission-aware search and agents across company applicationsiGPTTurns your email, files and meetings into cited answers, through a chat app or a token-billed context API

Side by side

FactGleaniGPT
CategoryPersonal & Enterprise SearchPersonal & Enterprise Search
Pricing modelContactFreemium
Starts at—$20/mo
Public APIYesYes
Trust score90 / 10083 / 100
PlatformsWeb, API, Slack app, Chrome extensionWeb, API
CompanyGlean Technologies, Inc.iGPT
Launched2019—
Last verifiedOct 16, 2026Oct 16, 2026

What our research says

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

iGPT

The interesting part is not the chat box but the plumbing under it — deduplicating quoted email text and attributing speakers across thread formats is fiddly work most 'chat with your inbox' tools skip. Selling that same layer as a token-billed API is unusual and genuinely useful if you are building on top. The unknown is the vendor itself: no company name, no address, no country.

Pros

  • Rebuilds email threads with quoted-text deduplication and participant attribution
  • Combines private context with live web data in a single cited answer
  • Developer API priced per token with no setup fee or commitment
  • States that customer email, documents and chat history are not used for model training

Cons

  • No legal entity, address or country disclosed anywhere on the site
  • Team carries a three-seat minimum, so the practical entry is $90/month
  • Token-billed API makes costs hard to forecast in advance

Which one fits

Choose Glean if you need

  • Organisations above roughly 500 people whose knowledge is scattered across a dozen SaaS tools
  • Regulated or security-conscious buyers who need source-system permissions honoured exactly
  • Teams building internal agents that need governed access to company context

Choose iGPT if you need

  • People whose real knowledge base is their inbox and shared drive
  • Developers who want parsed email and work-app context as an API rather than writing the parsers
  • Teams that want answers traceable back to the original thread

Glean vs iGPT: the questions people ask

Is Glean cheaper than iGPT?

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

Does Glean or iGPT have a free tier?

iGPT has a free tier; Glean prices on request.

Which has a public API, Glean or iGPT?

Both ship a public API, so either can be built on; the fact table above shows the platforms each one runs on.

More comparisons

All iGPT alternatives →Browse all Personal & Enterprise Search →