Plain

Plain is an AI-native support platform that connects communication channels and orchestrates AI agents to manage customer conversations for B2B teams.

Plain is an AI-native support platform built for B2B teams to manage conversations across Slack, Microsoft Teams, Discord, and email. It provides a unified workspace where human teams collaborate alongside AI agents like Ari to triage, investigate, and resolve issues. The infrastructure allows users to build custom workflows, automate routing, and trigger actions in external systems like Linear, Jira, or custom APIs. It includes Sidekick, an internal assistant that helps support agents by drafting replies and summarizing customer history from internal knowledge sources. The platform also tracks support data to generate insights on trends and churn risks. Every part of the system is extensible through an API, enabling teams to build customized support logic.

Plain at a glance

Best for: Support, Software engineer
Runs on: Web, API
Pricing: Foundation $45/user/month; Horizon $99/user/month; Frontier custom pricing.
Released: February 2024
Category: AI productivity tool
Website: plain.com

Key features

Multi-channel communication support for Slack, Teams, Discord, and email
Autonomous AI agents for triaging and resolving customer inquiries
Automated workflows for routing, labeling, and escalation
Internal AI sidekick for drafting replies and summarizing threads
Real-time insights generation for trends and product feedback
Extensible API for custom integrations and logic
Knowledge base management for customer self-service

Use it for

Managing customer support across multiple messaging channels
Automating repetitive support tasks and ticket triaging
Triggering engineering incidents in Linear or Jira
Analyzing support data to identify product churn risks

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Kaiku — Wire-level MCP compatibility lets existing AI agents work without custom bridges.
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Oktomer — It offers unlimited seats and conversations at a fixed monthly price.
ShareCube — Publish agent artifacts to URLs for team annotation and editing.
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