Liner is an AI platform designed to help professionals find reliable information, conduct research, and create polished writing in one workflow. Its tools use AI search technology to support different kinds of work, with cited answers that users can check and follow up on. Liner helps people explore everyday questions, verify sources, understand complex topics, and organize ideas.

Liner Scholar supports academic research, helping users find and compare papers, identify relevant citations, and prepare literature reviews. It also offers research-focused writing and document editing features. Liner Write combines search, drafting, editing, and verification to help users develop emails, newsletters, reports, proposals, and other professional content. The company also provides API and MCP offerings, alongside research-oriented agent tools such as literature review and citation recommendations.

Liner presents its services as a way to move from searching and research to clear, fact-checked writing. Its products are available through shared subscription plans, with desktop support for Liner Scholar and Liner Write. The company also highlights responsible AI use, safety, and security.