YC Summer 2026 (S26) company

OpenTag

Model Agnostic Claude Tag

About OpenTag

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.

Public traction evidence

Each signal links to the public source used for attribution.

  1. X

    Excited to share what @sheldenshi , @potatoparser, and I have been building: @GiniAgent, a model agnostic proactive AI coworker that lives inside of Slack AI coworker that lives in Slack.

    Excited to share what @sheldenshi , @potatoparser, and I have been building: @GiniAgent, a model agnostic proactive AI coworker that lives inside of Slack AI coworker that lives in Slack. Backed by @ycombinator

  2. X

    You might've heard of @OpenAI, @OpenRouter, @opencode We're excited to launch @TryOpenTag : the model-agnostic Claude Tag.

    You might've heard of @OpenAI, @OpenRouter, @opencode We're excited to launch @TryOpenTag : the model-agnostic Claude Tag. If you've seen Claude Tag, you know the interface. Tag an AI in Slack, hand it a task, get the result in the thread. We think that's the right interface.

  3. X

    If you don't have a frontier AI agent that lives in your slack and responds like a coworker, you should get one, it's incredibly useful. O…

    If you don't have a frontier AI agent that lives in your slack and responds like a coworker, you should get one, it's incredibly useful. Opentag lets you put an agent in your Slack and stay flexible on what model powers it.

  4. X

    I wish a model agnostic AI Slack Coworker existed.

    I wish a model agnostic AI Slack Coworker existed. Is anyone building this?

  5. X

    Model agnostic AI Slack Coworker are not possible from a technology perspective.

    Model agnostic AI Slack Coworker are not possible from a technology perspective. It’s why nobody is building this.

  6. X

    Excited to launch on @ProductHunt today 😼.

    Excited to launch on @ProductHunt today 😼. Please help upvote 🥺 https://t.co/OzVwaOrwno

  7. X

    I am excited to announce that @runwayml is now available natively in @TryOpenTag !!!!!! Try it today.

    I am excited to announce that @runwayml is now available natively in @TryOpenTag !!!!!! Try it today. CC: @c_valenzuelab

  8. X

    Tag GTM.5.3-Flash in Slack today.

    Tag GTM.5.3-Flash in Slack today. This is why Model Agnostic is the right choice!