Claude vs Glean

Claude is the AI assistant from Anthropic, the San Francisco AI safety and research company founded in 2021 by Dario Amodei, Daniela Amodei and other former OpenAI researchers. It is known for careful, well-structured writing, strong reasoning over long documents and reliable coding, and it is available on the web, desktop apps for Mac and Windows, and mobile apps.

In the apps, Projects keep files and instructions as persistent context, Artifacts render documents, code and small interactive apps beside the chat, and Claude can search the web, run deep research, analyze uploaded files, and connect to Google Workspace, Slack and other tools through the Model Context Protocol (MCP), an open standard Anthropic introduced in 2024. Claude Code brings the same models to the terminal and IDE as an agentic coding tool. Plans range from a free tier with daily limits to Pro, Max for heavy users, Team with central admin and Enterprise with SSO, audit logs and compliance controls. Developers access the models through the Claude API and major cloud platforms such as Amazon Bedrock and Google Cloud Vertex AI.

Claude fits writers, analysts, lawyers, researchers and developers who work with long material and want precise instruction-following. It does not generate images or video natively, and usage limits on lower plans can be reached during intensive sessions. ChatGPT offers a broader consumer feature set including image generation and voice, Gemini integrates deeply with Google services, and many professionals keep two assistants for different strengths.

Glean is an enterprise work AI platform that indexes a company's apps, documents and conversations and lets employees search, ask questions and run agents over that knowledge. It was founded in 2019 in Palo Alto by former Google search engineer Arvind Jain, who previously co-founded Rubrik, and it raised a $150 million Series F at a $7.2 billion valuation in June 2025.

The platform has three layers: Glean Search, a ranked enterprise search; Glean Assistant, a chat assistant grounded in company data; and Glean Agents, which automate multi-step work from natural-language instructions. Underneath sit 275+ connectors, an Enterprise Graph that maps people, content and activity, and permission enforcement that mirrors each source system in near real time. It also offers APIs and MCP support. Pricing is not published; it is sold per seat through sales, with demos instead of a self-serve trial.

Glean fits large organizations with knowledge scattered across Slack, Google Drive, Confluence, Jira, Salesforce and code hosts. It is overkill and likely too costly for small companies, and results depend on clean permissions in source systems. Microsoft 365 Copilot is the natural rival for Microsoft-centric firms, ChatGPT Enterprise offers broader general AI with connectors, and Notion AI covers search well if Notion is already your wiki.

Glean announced in December 2025 that its annual recurring revenue had passed $200 million, doubling in nine months. When evaluating, run a pilot on your messiest knowledge sources and test permission boundaries with a few restricted documents.