Glean alternatives in 2026, ranked

Glean made "AI search across every app your company runs" a category, and plenty of teams now want the same thing without Glean's price tag or its six-to-twelve-week rollout. Good news: there are real options in 2026, and they split into two camps. Most are enterprise search, the same shape as Glean. One is a different category entirely. Here is the honest ranked list.

The enterprise-search alternatives, ranked

These all do the core Glean job: connect to your tools, index everything, and answer questions in their own interface.

1. Onyx (open-source)

If you want the Glean model but on your own terms, Onyx is the standout. It is open-source enterprise search with 40-plus connectors, AI chat over your indexed data, and the option to self-host so the index never leaves your infrastructure. For a team that cares about cost and control, this is the first one to try.

2. GoSearch

A close like-for-like to Glean for the mid-market. Federated search across your apps, an AI assistant on top, and a faster path to value than the enterprise giants. A reasonable pick if Glean's framing fits but its contract does not.

3. Guru

Guru leans into verified, human-curated knowledge cards plus AI answers. If your pain is less "search everything" and more "trustworthy answers people actually maintain," Guru's curation model is a real differentiator.

4. Coveo

Enterprise-grade relevance and search, strong in commerce and support use cases. Heavier and more configurable, aimed at large orgs that need search tuned hard for specific workflows.

5. Microsoft Copilot

If your company already lives in Microsoft 365, Copilot reaches across that estate natively. It is less a standalone search product and more a layer over the Microsoft stack, which is exactly its strength if that is where your data sits.

6. Dust

Dust sits a step beyond pure search: it lets teams build assistants and agents over their company data. Closer to "do work with your context" than "answer questions from an index," and worth a look if you want to act on results, not just read them.

7. Coworker.ai

Coworker.ai goes furthest past retrieval, executing real work across your stack rather than only surfacing answers. If you are evaluating Glean but secretly want the AI to act, this is the camp to explore.

8. Notion AI / Slack AI

Worth naming because teams reach for them, but be clear-eyed: each only reads its own app. Notion AI answers across your Notion. Slack AI answers across your Slack. They are ecosystem-native and good at it, but neither is cross-tool search the way Glean is.

The different category: curated context for your AI tools

Here is the thing nobody on that list is doing. Every option above builds a searchable copy of your data and asks people to go to a box and query it. That is enterprise search. It is a destination.

BaseThread takes the opposite approach. It does not index everything into its own searchable surface. It distills the signal from your connected tools into a curated context graph, structured the way your company actually works (Company, Products, Teams, Projects, You), scoped to the right team or project. Then it feeds that context to the AI tools your team already uses, Claude Code, Cursor, ChatGPT, over MCP, local or remote.

So the AI you already work in starts every session knowing your team's context, instead of you opening yet another tab to search.

Integrations distill context from connected tools like Notion and HubSpot, the signal, not a dump. Curated, not scraped.

How to choose

	Enterprise search (Glean and alternatives)	BaseThread
Core model	Index everything, search it	Distill the signal into a curated graph
Where you use it	Its own search UI	The AI tools you already use, over MCP
Scope	Everything you query	The right team or project
Shape of data	A searchable copy	A curated context layer
Best when	You want one search box over all apps	You want your AI tools to share context

If you want a search box over all your company's apps, pick from the ranked list, Onyx if you want open-source and self-hosted. If your real goal is getting your AI tools on the same page as your team, that is a different job, and search was never going to do it.

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