Top Glean Alternatives for Enterprise AI Search in 2026

The strongest glean alternatives for enterprise AI search in 2026 are Microsoft 365 Copilot, GoSearch, Vaultiscan, ServiceNow (formerly Moveworks), Coveo, and Kore.ai, each of which is identified by its deployment boundary, connector capabilities, and the type of buyer problem it addresses. So, when we add budgets, data-residency rules, and department-specific workflows to the mix, it becomes a category of its own—namely, choosing a glean alternative—because none of the six wins on every axis.

What follows compares all six on architecture and coverage and looks specifically at where Vaultiscan fits for organisations that cannot let regulated content sit inside a shared, multi-tenant index.

Why Enterprise Buyers Look Past Glean

Glean is often the default answer to “we need an AI search tool,” built around a large, permissioned, multi-tenant index that suits a general SaaS estate well. It does not automatically suit a contract repository, a claims file or a codebase a security team has ruled cannot leave a defined boundary, a limit examined further in “Why Conversational RAG Systems Fail in the Enterprise”. Nor is it the best fit for a team standardised on Microsoft 365, or one whose real problem is finishing a workflow rather than finding a document. The six platforms below start from a different assumption about where the data can sit and what a search should end in.

How We Compared These Six Platforms

Each entry below is evaluated on architecture and deployment model, breadth of connected systems, the buyer it fits best, and one limitation worth knowing before a demo. Platforms are ordered from the broadest like-for-like overlap with Glean’s own horizontal search category to the most specialised, customer-facing or workflow-bound alternatives.

Microsoft 365 Copilot

For any organisation already on Microsoft 365 and Entra ID, Microsoft 365 Copilot is the default solution. Copilot has now passed the 30 million paid seats milestone and leverages directly on the Microsoft Graph, meaning that search, chat and document generation are built into a licence that the organisation already pays for. The standalone Business add-on is currently discounted at $18 per user per month for a year (until 31 December 2026), from $21.

Best for: Enterprises that are already using Microsoft products and desire AI search as part of their productivity suite instead of a separate product.

GoSearch

GoSearch is an agentic search platform that connects over 100 apps (including Jira, Asana, Slack, Salesforce, and Notion), is SOC 2 Type II certified, GDPR, CCPA and HIPAA compliant, and has a stated zero data retention policy for queries. Model N, one such customer, has achieved an 80% daily-active-user adoption rate in three months and cut its support ticket backlog by 49%.

Best for: Mid-sized companies looking for a quick and economical deployment that avoids a comprehensive mapping process of connectors.

Vaultiscan

Vaultiscan is a governed AI platform built for content a shared, multi-tenant index was never designed to hold. Vaulti GPT connects to an organisation’s own applications, databases and operational systems, deploys inside that organisation’s own environment or a dedicated, single-tenant instance, and attaches source, version, and owner to every answer rather than only a link back to a document. It is hosted on Azure secured infrastructure that is covered by SOC 2, ISO 27001, GDPR, HIPAA Ready, and customer data is never used to train an external model.

Best for: Regulated organisations, financial services and insurance companies where the most sensitive information is not allowed to reside within a shared cloud index irrespective of its permission model (contracts, claims files and engineering specifications are common).

ServiceNow (Moveworks)

ServiceNow closed its $2.85 billion Moveworks acquisition on 15 December 2025, and the product has since been integrated under the umbrella of ServiceNow Otto, transforming enterprise search into a part of a larger workflow, instead of a standalone solution. For instance, a benefits question is not meant to result in a resolved ticket but is meant to reference a policy document.

Best for: Organisations already running ServiceNow that want a search to trigger action, not only surface an answer.

Coveo

Coveo is a public AI-relevance platform built for search that faces customers rather than employees. Its first fiscal-2027 quarter (30 July 2026) showed total revenue of $38.5 million, subscription revenue up 9% year over year, and 99% net expansion. Gartner names Coveo a Leader in its Magic Quadrant for Search and Product Discovery, and Executive Chairman Louis Têtu is direct about the premise: “AI without context simply does not work.”

Best for: E-commerce, digital commerce and customer-support teams optimising the search and product-discovery experience a customer sees, not internal knowledge work.

Kore.ai

Kore.ai is an enterprise agent platform with genuine depth in contact-centre and conversational AI, named a Leader by Gartner, Forrester, and Everest Group across five enterprise AI evaluations on 19 August 2026. It has been building out agentic capability quickly: its Artemis platform launched 21 May 2026, and an 8 July 2026 partnership with Atos targets sovereign agentic AI for UK enterprises with data-residency requirements.

Best for: Banking, telecom and healthcare organisations whose priority is voice- and chat-based service automation, with search as one supporting capability rather than the product itself.

Six Alternatives, Side by Side

The table below lines up all six alternatives on the same four dimensions: deployment model, connector or app coverage, the buyer each one fits best, and its one honest trade-off. Vaultiscan is the third row.

Vaultiscan vs. Glean

Why is Vaultiscan the top Glean alternative for regulated enterprises?

For a general SaaS estate, Glean’s breadth is hard to beat. For the slice of that estate carrying contracts, claims files, client records, or other regulated content, Vaultiscan is built differently on purpose:

• Deployment boundary: Vaultiscan deploys inside your own environment or a dedicated, single-tenant instance. Glean runs as shared, multi-tenant SaaS, so an organisation’s index sits inside Glean’s cloud, isolated by permission rather than infrastructure.
• Answer provenance: every Vaultiscan answer carries source, version, and owner, an audit trails a compliance reviewer can act on. Glean’s citation points back to the source document inside the connected app.
• Coverage philosophy: Vaultiscan connects to the specific systems carrying regulated content by design, not every SaaS app a team happens to sign up for. Glean’s 275+ connectors optimise for the opposite: connect once, cover everything.
• Security posture: SOC 2, ISO 27001, GDPR, HIPAA Ready on Azure secured infrastructure; customer data will never be used for training an external model.
• Buying motion: a scoped, permissioned rollout rather than a same-day connector sign-up. That is the right trade for a buyer whose real requirement is control, not speed.

Where the Choice Actually Comes Down To

Most of the sorting is done by the three questions:

• Does the organisation already use a single productivity suite, which is typically Microsoft 365 Copilot?
• Does the content require compliance or residency so that a shared, multi-tenant index is not even feasible, as Vaultiscan is designed to answer?
• Is the search supposed to conclude in a customer facing outcome or a completed workflow, with a recommendation to Coveo or Kore.ai?

Software and platforms licensing continue to contribute 58.11% to the revenues generated on the category, while services are the fastest growing segment with CAGR of 10.11% till 2031, the real call now lies in the deployment and governance work, rather than the licence, Mordor Intelligence data shows.

This is where “Half of Enterprise AI Projects Are Stalling: The Data Problem” plays a crucial role: While it is often about the vendor’s logo, the true challenge is mapping the right systems and permissions.

Frequently Asked Questions

• What is the best glean alternative for a regulated industry?

For organisations in financial services, insurance, or any sector where contracts, claims files or client records cannot sit inside a shared cloud index, a governed platform such as Vaultiscan is the closer fit than a horizontal, multi-tenant assistant like Glean.

• Can Vaultiscan and Glean, or another alternative, run together?

Yes. Many enterprises run a horizontal assistant such as Glean or Microsoft 365 Copilot across their general SaaS estate and a governed platform such as Vaultiscan for the narrower set of systems holding regulated content, rather than replacing one with the other.

• How long does switching from Glean to an alternative typically take?

It depends on the alternative’s architecture. Adding a suite-native tool such as Microsoft 365 Copilot to an existing Microsoft 365 tenant, or a lightweight platform such as GoSearch, is largely a configuration exercise measured in days. A governed rollout onto Vaultiscan means scoping which systems and document types are in scope and validating permissions before go-live, which takes real weeks rather than a single afternoon.

The Default Was Never the Only Option

Glean’s scale answers one question well: breadth across a general SaaS estate. It was never built to answer whether a workflow finishes automatically, whether a customer sees the right product first, or whether a contract can legally sit inside a shared index at all. Microsoft 365 Copilot, GoSearch, ServiceNow, Coveo, and Kore.ai each answer a different one of those questions well. Vaultiscan answers the question of where regulated content is allowed to live. Choosing a glean ai alternative in 2026 means picking the question that matters most, not the platform with the largest connector count.

Weighing a governed platform for a regulated rollout? Talk to Vaultiscan.