Plain

Private

AltrinchamEnterprise Softwarehttps://www.plain.com/

Last Round

Series A

Feb 10, 2025

Total Funding Raised

$33M

Momentum

Top 25%

of companies Caplight tracks

Company Overview

Plain is a software company that provides an AI-native, API-first customer support platform designed for B2B SaaS and engineering-led teams.

Sector

Enterprise Software

Verticals

Customer Experience, Workflow Automation, NLP & Conversational AI, Enterprise Communication, Vertical SaaS

Business Model

B2B

Customer Profile

Subscription SaaS, Freemium

AI Layer

Application

Keywords

customer support platformAI customer supportB2B customer supportunified inboxconversational supportAPI-firsttechnical support platformAI assistantsupport automationdeveloper support platformSLA managementhelp centerLinear integrationJira integrationSlack integration

Historical Pricing

Historical view of private secondary pricing and transaction trends.

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

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Track how buyer interest and sentiment changes over time.

Plain Comparables

Compare Plain with similar companies based on industry and business-model similarity.

Plain comparables — related companies by embedding similarity
Company	Similarity	Market Cap
Unthread	90%
Pylon	88%
ClearFeed	84%

View all Comparables

Plain Funding Rounds

Historical fundraising activity

Data table
Round	Date	Amount Raised	Valuation	Investors	Sources
Series A	Feb 10, 2025
Seed	Nov 8, 2023
Seed	Dec 12, 2022
Seed	Nov 9, 2022

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Key People

Founding team and executive leadership

Matt Vagni

Co-founder & CPO

Founding Team

Méril Pilon

Chief Technology Officer

Executive Team

Plain Investors

Notable investors and investment history

Plain investors
Investor	Rounds
MKT1	Seed
Connect Ventures	Series A, Seed
MKT1 Capital	Seed
Connect Ventures	Series A, Seed
Battery Ventures	Series A
Index Ventures	Series A, Seed

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Market signals

Structured signals derived from secondary market and firmographic data.

Apr 1, 2026
Referenced Cursor, Raycast, and Granola as customers.
Aug 29, 2025
Added Buildkite Pty Ltd, a DevOps technology company, as a customer.

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Plain Filings

SEC and related filings with document metadata.

Data table
Typed	Date	Amount Offered	Amount Sold	Filling	Pages	Download
Mock Valuation	Sign Up to view	Mock Valuation	Sign Up to view	Mock Valuation	Sign Up to view	Mock Valuation
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Plain Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about Plain's valuation, stock price, and market status.

Firmographic Details

HeadquartersAltrincham

Employee Range43

Year Founded2020

Last FundingFeb 10, 2025

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