Trelium is an applied AI company based in San Francisco that helps mid-market and enterprise teams automate repetitive business workflows. Backed by Y Combinator and built by engineers from Apple, Google, and Tesla, the company offers an AI agent-building platform designed to work with the software businesses already use. Its agents can read emails, PDFs, and spreadsheets; extract and check information against business rules; update systems; prepare responses; and send exceptions to people for review.

Common applications include entering purchase orders, matching invoices, responding to order-status questions, following up on quotes and proposals, routing approvals, monitoring vendors, and producing recurring reports. Trelium connects with tools such as NetSuite, QuickBooks, Salesforce, Gmail, Outlook, Slack, and industry-specific order systems. Teams can bring a real workflow to a 30-minute live demonstration and see it automated before deciding whether to keep the agent. The platform emphasizes audit logs and human review for sensitive decisions.