Eight Glean Alternatives for Enterprise Search

Microsoft 365 Copilot is the strongest Glean alternative for a Microsoft-centered organization.

Google Agent Search and Elastic are better when a product team wants to build the experience.

We treat the remaining products as specialists for narrower operating models.

Glean remains the managed default to beat. Its enterprise search product combines permission-aware indexing, a knowledge graph, generated answers, and more than 275 listed connectors. An alternative should solve a specific mismatch, not merely offer a lower-looking headline price.

Common mismatches are concrete: the organization wants search inside Microsoft applications, needs an embedded customer experience, owns a search engineering team, requires self-managed infrastructure, or wants a knowledge-verification workflow. Write that reason down before the vendor list. Otherwise the evaluation rewards whichever demo looks most like Glean while missing why the team considered leaving.

Each alternative wins a different operating model

Table 1 Download CSV

Alternative	Choose it when	Pricing signal	Main trade
Microsoft 365 Copilot	Microsoft Graph holds most work	$30/user/month annually, plus qualifying plan	Weaker fit for fragmented non-Microsoft estates
Google Cloud Agent Search	Search is a product feature	Usage-based queries, generation, and storage	Team owns evaluation and experience
Elastic	Search engineers need low-level control	Usage-based serverless or self-managed	More relevance and operations work
Guru	Verified knowledge is part of the workflow	Starts at $25/seat/month	Requires a knowledge-maintenance habit
Coveo	Customer service, commerce, or websites drive search	Quote and solution entitlements	Packaging and volume need careful mapping
Perplexity Enterprise	Teams mix web and internal research	Pro $40/user/month, Max $325	Less centered on company-wide indexing
Amazon Quick	AWS is the preferred data and agent platform	Seat and usage components	Newer successor path needs validation
SearchBlox SearchAI	Fixed-cost, cloud, or on-prem deployment matters	Custom fixed-cost quote	Smaller ecosystem and less public evaluation

This is not a controlled performance rank. It maps first-party product and pricing evidence to operating models. Run the same private corpus before signing.

Microsoft 365 Copilot wins inside Microsoft 365

Microsoft is the first test when SharePoint, Teams, OneDrive, Outlook, Word, and Entra define the company knowledge boundary. The product can meet users inside familiar applications and inherit an existing identity system.

Microsoft lists the enterprise Copilot license at $30 per user per month, paid yearly, with a qualifying Microsoft 365 plan required. Copilot Chat is included for eligible Entra users, agent activity can add metered charges.

Choose Microsoft over Glean when the estate is concentrated and application context matters more than broad neutral connectors. Test Salesforce, Jira, Zendesk, acquired-company tenants, and any source outside Microsoft Graph before assuming the fit extends company-wide.

Google Cloud Agent Search is a builder platform

Google Agent Search is a developer platform for building search into an application. It gives the team control over data stores, ranking, retrieval, generated answers, and interface design.

Published pricing starts at $1.50 per 1,000 standard queries. Enterprise search with core generative answers is $4 per 1,000, and advanced generative features add $4 per 1,000. Storage is $5 per GB monthly after the first 10 GB, 10,000 queries are included each month.

Choose it when Glean's packaged employee experience is the wrong abstraction. The engineering team must own permissions, evaluation, administration, and the user experience that Glean would otherwise supply.

Elastic is for teams that own relevance

Elastic is the alternative for organizations that already treat search relevance as an engineering competency. It supports keyword and vector retrieval, filters, reranking, custom pipelines, observability, and self-managed or serverless operation.

Use current Elasticsearch-native tools for a new deployment. Elastic says the older standalone Enterprise Search, App Search, and Workplace Search products are in maintenance mode and are not recommended for new search experiences.

Choose Elastic when control over schemas, analyzers, ranking, and deployment is worth the additional work. Do not choose it expecting a ready employee-search portal with broad maintained connectors and administration on day one.

Guru makes verification part of the workflow

Guru combines enterprise search with a verified knowledge layer. It connects sources, preserves permissions, cites answers, and adds workflows that flag stale or missing knowledge.

That focus can solve a different problem from Glean. If support or revenue teams need an approved answer rather than the newest matching document, verification may be more valuable than connector breadth. Guru advertises plans starting at $25 per seat monthly and custom enterprise terms.

Choose Guru when people will own and review knowledge. Without that operating habit, the verification feature becomes another unattended queue.

Coveo is strongest in customer-facing search

Coveo is strongest where search is part of customer service, a website, commerce, Salesforce, ServiceNow, or another digital experience. It combines a unified index, machine-learned relevance, recommendations, and generated answers.

Coveo's entitlement documentation shows why a quote needs careful reading: platform and solution plans use query, item, recommendation, and user units in different combinations.

Choose Coveo when the search program has a customer or service outcome and needs domain-specific integration. Glean remains the simpler comparison for general employee discovery.

Perplexity Enterprise

Perplexity begins with answer-oriented web research and adds connected enterprise sources, administration, and commercial privacy terms. That makes it useful for strategy, sales, finance, and research teams that constantly cross the public-private boundary.

Enterprise Pro pricing is $40 per user monthly or $400 annually. Enterprise Max is $325 monthly or $3,250 annually.

Choose it when public research is central. Test how answers distinguish company evidence from the web, how permissions propagate, and what happens when the two sources conflict.

Amazon Quick

Amazon Quick is the current AWS path to evaluate for enterprise agents and knowledge work. Amazon Q Business stopped accepting new customers after July 31, 2026, according to AWS API documentation, existing customers can continue.

That cutoff makes old Q Business comparisons stale for new procurement. Amazon Quick pricing combines subscriptions and usage components, so model a real user and query mix from the current AWS calculator rather than copying a retired Q Business seat rate.

Choose Amazon Quick when AWS identity, data services, and procurement are strategic. Treat it as a fresh evaluation, not a drop-in continuation of a Q Business trial.

SearchBlox SearchAI

SearchBlox offers managed and self-managed enterprise search with hybrid retrieval, RAG, knowledge graphs, agents, and fixed-cost positioning. It advertises cloud and on-premises deployment, which makes it relevant to buyers who cannot use a pure SaaS index.

Inception's SearchBlox partnership report documents Mercury as an available model endpoint inside SearchAI. The report is partner-published evidence of integration, not an independent latency or cost result.

Choose SearchBlox when deployment control and predictable pricing are the initial filters. Ask for reference architecture, failure handling, upgrade responsibility, connector evidence, and a corpus-specific retrieval test.

Make the replacement earn its migration

Export 100 to 300 real questions and the documents that should support them. Create users with overlapping permissions. Add deleted files, newly shared content, stale policies, conflicting sources, acronyms, and questions the corpus cannot answer.

Score every finalist on retrieval, citations, permission leakage, freshness, abstention, administrator diagnosis time, p95 latency, and cost per supported answer. Include the incumbent Glean configuration if one exists, a clean competitor demo should not be compared with an untuned production system.

Migration cost belongs in the decision. Connectors, identity mapping, analytics, saved knowledge, user training, and relevance tuning do not move for free.

Ask each vendor to price the same three-year scenario with named sources, indexed volume, users, monthly queries, growth, environments, support, and implementation. Require the quote to identify metered features and renewal assumptions. Then add internal engineering, security review, change management, and the parallel-run period.

For an incumbent replacement, keep Glean in the test and tune obvious defects before comparing. The alternative must beat the working system after migration cost, not an intentionally neglected baseline. A specialist can still win decisively when its operating model removes a real constraint.

Replace Glean only when the alternative's operating model is a better fit and the private evaluation proves it.