Plain

The AI support stack built for B2B

Help DeskLondon, United Kingdom11–50 employeesFounded 2020

#24 of 37 in Help Desk 20% positive in AI answers

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Visibility score

1.5%

−0.8% vs last week

Weekly run · Nov 3

Data collected Nov 3, 2026·ChatGPT, Perplexity, Google AI Mode·coverage 98.8%·next run Nov 9, 2026

Plain ranks #24 of 37 in Help Desk with an AI visibility score of 1.5 (SlateIndex, Nov 3, 2026).
Plain's visibility fell 0.8 points since the previous weekly run.
Plain is most visible on Perplexity (3.1) and least on Google AI Mode (0).
AI engines name Plain in 1 of the 30 Help Desk buyer prompts SlateIndex tracks.
intercom.com is the source AI engines cite most in answers about Plain, with 3 citations.

About

Company details for Plain

Plain is a customer support platform for B2B teams that brings Slack, Microsoft Teams, Discord, email, live chat, in-app forms and a help center into one workspace. It includes AI features such as Customer Agent, which answers customers, and Sidekick, an assistant for support staff, along with workflows, SLAs and insights. The product is API-first, so its functions can be extended, automated or embedded in a customer's own tools. It ranks #24 of 37 in Help Desk on SlateIndex and has a visibility score of 1.5 in the latest weekly run.

Founded in 2020 and headquartered in London, United Kingdom, the company employs 11–50 people. It has raised about $21M. Its differentiator: aPI-first, composable support infrastructure where everything in the product can be done programmatically.

Website: plain.com
Categories: Help Desk
Company size: 11–50 employees
Headquarters: London, United Kingdom
Founded: 2020
Company type: Private, venture-backed
Funding: Series A · $21M raised
Pricing: $45 per seat / mo · per seat
Free trial: 7-day free trial
Deployment: Cloud (AWS eu-west-2, London)
Platforms: Web
Compliance: SOC 2 Type II, HIPAA, GDPR
Support: Help Center, Dedicated customer success manager (Frontier), White glove onboarding (Frontier), Community

Twitter · twitter.com/plainsupport X · x.com/plainsupport LinkedIn · linkedin.com/company/plainsupport GitHub · github.com/team-plain

Read from linkedin.com, plain.com, g2.com, twitter.com, techcrunch.com, eu-startups.com · refreshed Nov 2, 2026.

AI visibility

Latest weekly run · Nov 3 · next run Nov 9

Visibility score

1.5%

across Help Desk answers, weighted by position

ChatGPT1.3%

AI Mode0%

Perplexity3.1%

Change

−0.8%

vs last week’s run

Category rank

#24 of 37

in Help Desk

Mentions

in this week’s run

Share of voice

0.4%

of AI mentions in Help Desk

Visibility score trend

Weekly runs over the last 60 days, with up to 7 competitors. Click a name to hide or show its line.

Now1.5%

30-day changedown−0.7999999999999998pp

High · low2.3% · 1.5%

Rank#20 → #24

Plain lost 0.8 points over 1 weekly run in Help Desk. Freshworks leads the category at 61.5%.

Media

Website and product screenshots for Plain

All media

Home page

Pricing page

AI mentions & citations

Recent answers that name Plain

All prompts

Top help desk platform options for B2B SaaS companies

For most B2B SaaS companies, shortlist Pylon, Plain, Intercom, Zendesk, Front, Help Scout, Freshdesk, and HubSpot Service Hub.

Perplexity · run of Nov 3

Top help desk platform options for B2B SaaS companies

I'd also consider Plain and Front, depending on how your customers interact with your team.

ChatGPT · run of Nov 3

Products & features

What Plain sells

Customer Agent

AI agent that talks to customers and resolves issues across channels.

Sidekick Agent

AI assistant for support staff that drafts replies and searches knowledge using customer context.

Workflows

Automation for routing, triage, escalation and actions in external systems.

Insights

Detects themes, trends and churn risks across support conversations.

Lookup

Codebase integration that answers technical questions.

Help Center

Combines AI self-serve help, a knowledge base and a customer inbox.

Broadcasts

Sends messages to customers across their channels from Plain.

API

API-first developer platform with webhooks, events, MCP and custom channels.

Strengths engines cite

Recommended in B2B SaaS support shortlists
Strong fit for modern, Slack-connected developer-centric support
Suited to B2B teams depending on customer interaction style

Target market & buyers

B2B software companies, especially developer tools and AI companies

Notable customers include Vercel, Cursor, n8n, Resend, Granola, Raycast, Framer, Sourcegraph.

Industry	Primary use case
SaaS	Connecting AI agents to support to reduce ticket volume and rebuild enterprise support
Developer Tools	Managing Slack Connect channels, SLAs and tier-based prioritization
AI infrastructure	Consolidating the support stack onto one platform

Funding & recent developments

Funding

Round	Year	Amount
Seed	2022	$6M
Series A	2025	$15M

Latest known round	Total raised
Series A	$21M

Recent developments

Oct 2026ProductAri renamed Customer Agent
The built-in AI agent Ari was renamed Customer Agent.
Oct 2026ProductBroadcasts launched
Teams can message every customer channel from Plain.
Jul 2026ProductSidekick moves to credits
Sidekick moved to a metered monthly credit allowance included in each plan.
Mar 2026CompanyNamed Best AI Support Stack Software of 2026
AISupportStack.com named Plain its Best AI Support Stack Software of 2026.

Competitive landscape

How Plain compares with its top three alternatives

All alternatives

Plain most often appears alongside HubSpot, Freshworks, Zendesk in AI answers.

vsPlain vs HubSpot1.5% vs 73.1% visibility · HubSpot leadsFull comparison vsPlain vs Freshworks1.5% vs 61.5% visibility · Freshworks leadsFull comparison vsPlain vs Zendesk1.5% vs 49.3% visibility · Zendesk leadsFull comparison

Brand	Visibility	Share of voice	vs last week	Starting price
Plain	1.5%	0.4%	down−0.8%	$45 / seat / mo
HubSpot	73.1%	13.1%	New	Free plan
Freshworks	61.5%	12.9%	up+1.7%	Pricing not available
Zendesk	49.3%	11.2%	up+0.3%	$19 / seat / mo
Intercom	46.2%	10.1%	up+2%	$29 / seat / mo