9 Best AI Enterprise Search Tools of 2026

1. 1

   Microsoft 365 Copilot

   Microsoft's AI assistant for work that searches Microsoft 365 data and line-of-business systems through 100+ connectors.

   8.8overall

   Microsoft's AI assistant for work that searches Microsoft 365 data and line-of-business systems through 100+ connectors.

   Best forOrganizations already licensed on Microsoft 365 that want AI search inside Teams, Outlook and SharePoint.

   Adoption data

   30 million paid seatsMicrosoft said on its July 2026 earnings call that it had more than 30 million paid Microsoft 365 Copilot seats.

   Microsoft, Microsoft Fiscal Year 2026 Fourth Quarter Earnings Conference Call (2026): “When it comes to knowledge work, we now have over 30 million paid Microsoft 365 Copilot seats, with net seat adds more than doubling quarter-over-quarter.”

   Microsoft 365 Copilot is the enterprise search option with the most published buyers: Microsoft told investors in July 2026 that it had more than 30 million paid seats and that net seat additions had more than doubled from the prior quarter. For search, the key line on the product page is that Copilot gives AI-powered search across all work data, including line-of-business applications and services, through more than 100 connectors. Answers show up where employees already work, in Teams, Outlook, Word, Excel, PowerPoint, OneDrive and SharePoint, and admins get Copilot Analytics to measure use. The list price is $30.00 per user per month paid yearly, or $31.50 paid monthly on an annual commitment. That price sits on top of a qualifying Microsoft 365 plan, so the true per-seat cost is higher than the add-on alone. Companies whose documents live mostly in Google Drive, Notion or Confluence will get less from it than Microsoft-first organizations.

   Strengths

   • +Largest published paid seat base in this comparison
   • +Search results appear inside Teams, Outlook, Word and SharePoint
   • +Monthly payment option on an annual commitment

   Limitations

   • −Requires a separate qualifying Microsoft 365 license
   • −Most useful when the bulk of company content already lives in Microsoft 365
   • −No free plan for the full add-on

   SummaryMicrosoft reports more than 30 million paid Microsoft 365 Copilot seats.

2. 2

   Gemini Enterprise

   Google Cloud's AI workspace that answers questions from company data across Google Workspace, Microsoft 365 and other connected apps.

   8.5overall

   Google Cloud's AI workspace that answers questions from company data across Google Workspace, Microsoft 365 and other connected apps.

   Best forGoogle Workspace companies and teams of up to 300 that want AI search with a self-serve signup.

   Adoption data

   Nearly 90% of the Fortune 100Alphabet said in its second quarter 2026 results that nearly 90 percent of the Fortune 100 use Gemini Enterprise.

   Alphabet, Alphabet Q2 2026 earnings: CEO remarks (2026): “It’s great to see the wide adoption of Gemini Enterprise, with nearly 90% of the Fortune 100 using it.”

   Gemini Enterprise is Google Cloud's answer to company-wide AI search, and Alphabet reported in its second quarter 2026 results that nearly 90 percent of the Fortune 100 use it. The Business edition is the clearest entry point in this category: it starts at $21 per seat per month, can be set up without IT for teams of up to 300, and comes with a trial. It connects to common business apps, including Microsoft 365, Google Workspace, Jira, GitHub, HubSpot and Slack, and admins decide which connectors each team may use. Search sits alongside Gemini Notebook, pre-built Google agents and a no-code Workflow Builder for multi-step tasks. Google states that customers control their data and that it does not train on it. Larger companies will need the Standard or Plus editions for advanced features and enterprise compliance, and those are priced through sales, so the $21 figure applies only to smaller teams.

   Strengths

   • +Published per-seat price with self-serve signup
   • +Connects to both Google Workspace and Microsoft 365
   • +Strong published adoption among the largest US companies

   Limitations

   • −Business edition is capped at teams of up to 300
   • −Advanced compliance features need Standard or Plus through sales
   • −Business edition includes only select connectors

   SummaryAlphabet says nearly 90 percent of the Fortune 100 use Gemini Enterprise.

3. 3

   Glean

   A dedicated enterprise AI search and agent platform that indexes company apps through 275+ connectors with permission-aware answers.

   8.5overall

   A dedicated enterprise AI search and agent platform that indexes company apps through 275+ connectors with permission-aware answers.

   Best forMid-size and large companies with knowledge spread across many SaaS apps that want one neutral search layer.

   Adoption data

   $300 million ARRGlean announced in May 2026 that it had reached $300 million in annual recurring revenue, 15 months after passing $100 million.

   Glean, Glean Surpasses $300M ARR: Unrivaled Enterprise Context Fuels AI Adoption (2026): “Glean today announced it reached $300 million in annual recurring revenue (ARR), just 15 months after reaching $100 million ARR.”

   Glean is the best-known independent enterprise search company, and its own numbers show the growth: in May 2026 it announced $300 million in annual recurring revenue, 15 months after reaching $100 million, and said its Fortune 500 customer count nearly doubled year over year. The product is built around a company-wide index that Glean says spans more than 275 connectors and actions, with permission-aware access so answers respect the access rules of each source app. Glean lets customers choose among several LLMs, offers APIs for building their own AI experiences on top of the index, and lists SOC 2 Type II, ISO 27001, ISO 42001, HIPAA and GDPR on its site. The trade-off is buying friction. Glean's pricing page does not publish a per-seat figure, so every deal starts with a demo, and there is no free tier. Companies already paying for Copilot or Gemini Enterprise should compare connector coverage closely before adding Glean.

   Strengths

   • +Largest published connector catalog among the dedicated search tools here
   • +Vendor-neutral: works across Microsoft, Google and Atlassian stacks
   • +Strong compliance list for regulated industries

   Limitations

   • −No public price; buying runs through a sales demo
   • −No free plan for small teams to test
   • −Adds another vendor on top of suites that now bundle AI search

   SummaryGlean reports $300 million in annual recurring revenue and 275+ connectors.

4. 4

   Atlassian Rovo

   Atlassian's AI search, chat and agents, included in paid Confluence and Jira cloud plans.

   8.4overall

   Atlassian's AI search, chat and agents, included in paid Confluence and Jira cloud plans.

   Best forTeams whose documentation and work tracking already live in Confluence and Jira.

   Adoption data

   80% of the Fortune 500Atlassian told shareholders in August 2026 that more than 80 percent of Fortune 500 companies use Rovo.

   Atlassian, Our Q4 FY26 letter to shareholders (2026): “Over 80% of Fortune 500 companies now use Rovo”

   Atlassian Rovo is the cheapest route to AI search for companies that already keep their documentation in Confluence and their work in Jira. Rovo Search, Chat and Agents come with Confluence Standard, which Atlassian lists at $5.78 per user per month, along with cross-source data analysis and a shared data foundation. Atlassian's August 2026 shareholder letter says more than 80 percent of Fortune 500 companies now use Rovo, and that Rovo assisted actions grew more than 50 percent quarter over quarter. Its November 2026 results added that the rebuilt Atlassian MCP Server reaches 220+ tools and has over 2 million monthly users, which lets outside AI assistants query Atlassian content. The limits are scope and metering. Rovo is strongest on Atlassian data, so companies whose knowledge sits mainly in SharePoint or Google Drive should test connector coverage first, and heavy usage is billed through Rovo credits on top of the seat price.

   Strengths

   • +Lowest verified per-user entry price among the suite options
   • +No separate purchase for teams already on paid Confluence or Jira
   • +Published adoption across most of the Fortune 500

   Limitations

   • −Best results depend on content living in Atlassian apps
   • −Heavy use draws on Rovo credits, which adds a usage meter
   • −The quoted price is for Confluence; Rovo is not sold as a standalone seat

   SummaryAtlassian says more than 80 percent of Fortune 500 companies use Rovo.

5. 5

   Amazon Quick

   AWS's AI work assistant that connects to thousands of apps and data sources for research, search, dashboards and automations.

   7.7overall

   AWS's AI work assistant that connects to thousands of apps and data sources for research, search, dashboards and automations.

   Best forAWS customers that want low per-user AI search with dashboards and automations for the whole company.

   Amazon Quick is AWS's AI assistant for work, and it has the lowest verified entry price on this list. The Essentials organization plan costs $3 per user per month plus a $250 infrastructure fee per account, with no seat cap, RBAC, SSO, data sovereignty controls and 24/7 AWS Support. Smaller teams can pick Plus at $20 per user per month billed annually for up to 300 users, and individuals get a free plan. AWS says Quick connects to thousands of apps and data sources, including built-in connectors for popular apps, so it can pull context and take action from one conversation, and it runs in browsers and Microsoft 365 extensions. Professional and Enterprise plans at $20 and $40 per user add more agent hours, pooled storage and custom dashboards. The weak spot for this list is adoption evidence: AWS names customers but has not published a Quick user or customer count, so its adoption score is conservative.

   Strengths

   • +Lowest verified per-user price in this list
   • +Free plan for individuals to try it
   • +No seat cap on organization plans

   Limitations

   • −Organization plans add a $250 infrastructure fee per account
   • −Agent hours are capped per user on each plan
   • −AWS has not published a Quick customer or user count

   SummaryEssentials costs $3 per user per month with no seat cap, plus a $250 account fee.

6. 6

   Notion AI

   AI built into the Notion workspace, with Notion Agent and Enterprise Search across connected apps such as Slack and GitHub.

   7.6overall

   AI built into the Notion workspace, with Notion Agent and Enterprise Search across connected apps such as Slack and GitHub.

   Best forCompanies that already run their wiki and projects in Notion and want search across connected apps from the same place.

   Adoption data

   100 million usersNotion said in September 2024 that it had passed 100 million users.

   Notion, 100 Million of You (2024): “Last month, Notion passed 100M users!”

   Notion AI makes most sense for companies whose wiki, specs and project trackers already sit in Notion, a base Notion said passed 100 million users in 2024. On the Business plan, Notion Agent completes multi-step tasks using context from Notion, connected apps and the web, and Enterprise Search, still labeled beta, searches across connected apps such as Slack and GitHub. The same plan adds AI Meeting Notes that work without a bot joining the call, SAML SSO and row-level database permissions. Enterprise adds zero data retention with Notion's LLM providers. Notion also sells credits for Custom Agents that run tasks on their own. As a company-wide search layer it is narrower than Glean or Copilot, because its connector list is shorter and the search feature is new. The pricing page showed euros from our location, so the US per-member price is marked pending; check the US page before budgeting.

   Strengths

   • +Search and AI live in the same tool as the wiki
   • +Large existing user base reduces training effort
   • +Free plan with an AI trial

   Limitations

   • −Enterprise Search is still labeled beta
   • −Connector list is shorter than dedicated search tools
   • −USD price could not be verified from our location

   SummaryNotion AI adds Enterprise Search across connected apps to a workspace with 100 million users.

7. 7

   Coveo

   An AI search and generative answering platform with a unified index, used for customer service, websites, commerce and workplace search.

   7.5overall

   An AI search and generative answering platform with a unified index, used for customer service, websites, commerce and workplace search.

   Best forLarge companies that want one search platform for employees and customers, with native connectors to Salesforce, ServiceNow and SAP.

   Adoption data

   $142.5 millionCoveo reported $142.5 million in SaaS subscription revenue for its fiscal year ended March 31, 2026, up 13 percent.

   Coveo Solutions Inc., Coveo Reports Fourth Quarter and Fiscal 2026 Financial Results (2026): “SaaS Subscription Revenue (1) of $142.5 million, an increase of 13% compared to $126.6 million.”

   Coveo is the search platform on this list that serves both employees and customers. It builds a unified, secure index, runs hybrid AI search over it and adds grounded generative answering, and the same platform powers help centers, websites and commerce search. Coveo is publicly listed, and its fiscal 2026 results report $142.5 million in SaaS subscription revenue, up 13 percent, with its generative AI customer count nearly doubling year over year. Native connectors cover Salesforce, SAP, Shopify and ServiceNow, plus APIs for custom sources. For internal search, Coveo sells seat-based Workplace plans, while service and website use is priced on entitlements such as queries and indexed items, on annual or three-year terms. Coveo does not publish a seat price, so it ranks lower on value, and teams that only want an employee chat assistant may find it more platform than they need.

   Strengths

   • +Covers employee, support and website search on one platform
   • +Public company with audited revenue figures
   • +Deep connectors for enterprise CRM and service platforms

   Limitations

   • −No published per-seat price; quotes come from sales
   • −Pricing is based on queries and indexed items, which takes effort to model
   • −More configuration work than chat-first assistants

   SummaryCoveo runs employee, support and website search from one unified index.

8. 8

   Onyx

   An open source AI search and chat platform that connects to 40+ sources and can run inside your own infrastructure.

   7.4overall

   An open source AI search and chat platform that connects to 40+ sources and can run inside your own infrastructure.

   Best forSecurity-conscious teams that want auditable, self-hostable AI search with a choice of LLMs.

   Adoption data

   1,000+ teamsOnyx says on its homepage that more than 1,000 teams use it, running over 1 million queries per week.

   Onyx, Onyx homepage (2026): “1M+ queries per week 1,000+ teams”

   Onyx is the open source option on this list, aimed at teams that want to see and control what their AI search tool does. Its site says documents and embeddings can stay in your own infrastructure, source permissions are enforced at query time and the code is auditable end to end. The Business plan costs $20 per user per month on annual billing and includes chat and search, access to all major LLMs, custom agents with actions through MCP or OpenAPI, deep research, a code interpreter and 40+ app connectors. Enterprise adds OIDC and SAML SSO, on-premise and region-specific deployments, white-labeling and dedicated support. Onyx says more than 1,000 teams use it for over 1 million queries a week, a vendor claim rather than an audited figure. The main caution is ownership: Onyx has announced it is joining Zoom, so buyers should ask how plans and the open source project will change.

   Strengths

   • +Open source code that can be audited
   • +Documents and embeddings can stay in your own infrastructure
   • +Published per-user price

   Limitations

   • −Onyx has announced it is joining Zoom, so the roadmap may change
   • −SSO with OIDC or SAML requires Enterprise
   • −Smaller connector catalog than Glean or Copilot

   SummaryOnyx is open source and can keep documents and embeddings inside your own network.

9. 9

   GoSearch

   An AI enterprise search tool that connects 100+ apps and adds chat, agents and no-code workflows.

   7.2overall

   An AI enterprise search tool that connects 100+ apps and adds chat, agents and no-code workflows.

   Best forSmall and mid-size teams that want to start free and pay a flat per-user price for unlimited search.

   GoSearch is the easiest tool here to try without a sales call. It describes itself as an enterprise search knowledge layer that connects 100+ apps, with GoAI chat, agents and no-code workflows on top. The free plan covers personal data with basic private connectors, 10 searches and 3 GoAI queries per day, Slack and Teams integrations and a browser extension. Pro costs $20 per user per month and lifts those limits: all private connectors, unlimited searches and conversations, advanced LLMs, agents, workflows and role-based access control. Enterprise adds shared connectors, the GoSearch API, SSO, SAML and SCIM, audit logs and bring-your-own LLM or cloud, priced through sales. GoSearch does not publish a customer or user count, so its adoption score is the lowest on this list, and companies with strict identity requirements will need the Enterprise tier rather than Pro.

   Strengths

   • +Permanent free plan for personal data
   • +Unlimited searches and AI conversations on Pro
   • +Bring-your-own LLM and cloud on Enterprise

   Limitations

   • −Free plan limits searches to 10 per day
   • −SSO and audit logs require Enterprise
   • −No published customer or user count

   SummaryGoSearch offers a permanent free plan and unlimited search on Pro at $20 per user.

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