AI support platform for B2B teams that unifies channels, runs AI agents and automates support workflows.
Plain is an AI support platform for B2B customer support and engineering teams. It connects channels such as Slack, Microsoft Teams, Discord, email, chat and a portal into one workspace, where an AI assistant and multiple AI agents triage, investigate and resolve conversations alongside human teammates. Workflows route requests, create issues in external tools and enrich threads with customer data, while insights surface recurring themes and churn risks. Every part can be extended through an API. The product is sold through a trial and demo booking, with pricing listed on the site.
$55/mo per user
$45/mo billed yearlysave 18%
-
$99/mo billed yearly
Customcontact sales
Prices in USD, as shown by plain.com. Source: pricing page. Last checked October 30, 2026.
Copy the prompt below and paste it into the agent you already use. It has the plans and prices from this page and asks you the right questions first.
I want to decide whether Plain (plain.com) is the right tool and which plan to pick. Below is what the StableMRR pricing directory read from Plain's own pricing page (last checked 2026-10-30). It can be out of date, so treat it as a starting point. Category: Productivity / Team communication What it does: AI support platform for B2B teams that unifies channels, runs AI agents and automates support workflows. Free trial: 7 days Plans: - Foundation: $55/mo per user ($45/mo billed yearly). Limits: Member seats Up to 5, Viewer seats Unlimited, Credits included 1,000/month, Slack channels 25 channels, Email addresses 2 addresses, Knowledge Base 1. Includes: Sidekick Agent, Customer Agent, AI workflows, Slack, email, in-app channels, Linear and Jira integrations - Horizon: - ($99/mo billed yearly). Limits: Member seats Minimum 3, up to 10, Viewer seats Unlimited, Credits included 2,500/month, Slack channels Unlimited, Email addresses 10 addresses, Knowledge Base Unlimited. Includes: Microsoft Teams, SLAs and business hours, Escalation paths, CRM integrations, Reporting themes - Frontier: Contact sales. Limits: Member seats Custom, Viewer seats Unlimited, Credits included Custom, Email addresses 25 addresses, Knowledge Base Unlimited, Customer inbox Unlimited. Includes: Multiple workspaces, Custom contracting, Advanced security, SSO and SCIM, HIPAA Alternatives in the directory: Aircall, AnnounceKit, Atlas, Attuned Pricing page: https://www.plain.com/pricing Directory listing: https://stablemrr.com/p/plain-com First ask me three short questions about my team size, budget and what I need it for. Then recommend one plan, tell me what could make it a bad fit, and compare it with the alternatives. Finish with what I should check on the vendor's site before I pay.
No price changes recorded since we started tracking on October 30, 2026.
| Product | Category | Free plan | Paid from | Plans | Checked |
|---|---|---|---|---|---|
| AircallCloud phone and customer communications platform with AI voice agents, shared inbox, and CRM integrations. | Team communication | No | $175/mo | 4 | Oct 29, 2026 |
| AnnounceKitProduct communication platform for publishing changelogs, in-app announcements, feature requests and NPS surveys. | Team communication | No | $49/mo | 7 | Oct 29, 2026 |
| AtlasCustomer support platform that unifies chat, email, Slack and SMS channels with AI agents for drafting, routing and automation. | Team communication | No | $39/mo | 4 | Oct 29, 2026 |
| AttunedPeople-science platform that maps each team member's intrinsic motivators and gives managers AI coaching for hard conversations. | Team communication | No | - | 3 | Oct 29, 2026 |
| AvochatoBusiness text messaging platform for managing SMS, calls, and live chat in a shared team inbox. | Team communication | No | $210/mo | 3 | Oct 29, 2026 |
Price changes and new tools, once or twice a month. No pitches, unsubscribe in one click.
How this page was made. Plans and prices are read automatically from plain.com's public pricing page, checked against the page text, and re-checked about every week. Method. Something wrong? Tell us.
