Den: AI-native Slack replacement built ground-up for orchestrating thousands of agents alongside human workers
Key Points
- Den replaces Slack as a native orchestration layer for AI agents and human workers, letting agents escalate tasks to executives rather than siloing automation outside knowledge workers' existing workflows.
- Co-founders Linus and Justin scaled a previous company to $5M ARR, and Den targets early-stage startups that haven't yet locked into Slack, pricing on a per-seat model with agent-based fees.
- The founders acknowledge coding and math agents are strongest today due to verifiable rewards, while AI BDR agents remain unproven and customer success agents are being built on Den's primitives.
Summary
Den is positioning itself as an AI-native replacement for Slack, built from the ground up to orchestrate AI agents alongside human workers rather than bolt agents onto an existing communication layer.
Tools like Zapier and Relevance AI sit outside where knowledge workers actually spend their time. Knowledge workers spend more than 80% of their time in Slack and Notion, so Den brings agents into that workflow directly. Agents inside Den can escalate tasks to a CEO or head of customer success. Siloed automation tools cannot do that.
The product handles three task types: ad hoc requests, scheduled jobs, and trigger-based tasks such as running a workflow whenever an email arrives. Instead of a user asking "how many users signed up last month" and disappearing into an async Slack thread, an agent picks it up immediately.
Agent quality
The founders acknowledge that coding and math agents are strongest today because verifiable rewards are easier to define in those domains. Customer success agents are already being built on Den's primitives. AI BDR agents remain unproven, though reliability should improve as the infrastructure matures.
Go-to-market
Den targets early-stage startups first, companies that have not yet locked into a Slack installation, with the ambition to grow with them. Pricing is seat-based, with agent-based pricing layered on top.
Founder background
Linus previously scaled a company from zero to $5M ARR with 50 employees through a Series A. Justin joined during that run, taking the business from $500K to $5M ARR. Den itself is three months old.
The founders see a longer philosophical shift ahead. As knowledge gets commoditized and intelligence becomes cheap, the defining human role shifts from knowledge work to taste and agency. That framing explains why they think the communication stack needed to be rebuilt rather than patched.