OpenTag
OpenTag is a YC Summer 2026 (S26) company. Based in San Francisco, CA, USA. Team of 3.
About OpenTag
Summary
OpenTag builds an AI coworker that operates inside Slack and Microsoft Teams, giving enterprise teams a single assistant with full context across their tools, knowledge base, and communications. It answers questions, executes delegated tasks, joins calls, and runs automated workflows, replacing the manual work of routing requests, searching documentation, and keeping company wikis current.
Business model
A free tier plus paid plans, based on the site's "Get started free" and "Pricing" pages.
Go-to-market
B2B teams at companies of varying sizes adopt OpenTag through a self-serve path from the Slack Marketplace, with a book-a-demo option for sales-assisted onboarding.
From the Y Combinator listing
Model Agnostic Claude Tag
OpenTag - is an AI coworker that lives in your Slack and Teams. It has full context on your company, so it can answer questions, join calls, and take real work off your team's plate. OpenTag also keeps your company wiki and knowledge base up to date automatically, so your team's knowledge never goes stale or walks out the door.
Facts
- B2B / B2B
- San Francisco, CA, USA
- 3
- Active
- Early
Founders (2)
- Shelden Shi
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