Comparing Plain and Pylon? Both are B2B & Technical Support and Help Desk & Ticketing tools in the directory, which is why buyers put them on the same shortlist. Below is a side-by-side look at how they price, what they integrate with, and when each is the better fit, so you can pick on the facts rather than either vendor's own sales page.
| Attribute | Plain | Pylon |
|---|---|---|
| Pricing | Paid · $35/seat/mo | Paid · $59/agent/mo |
| Founded | 2020 | 2022 |
| Categories | B2B & Technical Support Help Desk & Ticketing | B2B & Technical Support Help Desk & Ticketing |
| Integrations | Slack Microsoft Teams Discord Linear Jira PagerDuty | Slack Microsoft Teams Salesforce HubSpot Jira Linear |
Plain is the support platform that talks to engineers without condescension. Founded in London around 2020 by Simon Rohrbach, previously Deliveroo's design director, and Matt Vagni, it is API-first, fast, and deliberately lean, built for B2B and developer-facing companies whose customers file sharp technical questions in shared Slack channels, Discord servers, and email. Its customer list is a tour of modern developer tooling: Vercel, Cursor, Raycast, Sanity, Laravel, n8n, and Stytch, and Sanity reported a 120 percent jump in team satisfaction after switching from Zendesk.
All those channels flow into one timeline per customer, with SLAs, escalation paths, and the workflow niceties of a grown-up help desk. The AI comes as a named pair: Ari, a customer-facing agent that answers technical questions from your docs and past threads, and Sidekick, an internal assistant that helps agents draft, label, and triage. A pointed commercial choice: every plan includes Ari with no per-resolution charges, a deliberate contrast to the outcome-billing trend, though AI usage is metered through monthly credits.
Plain raised a $15 million Series A led by Battery Ventures in early 2025, about $21 million in total, and publishes its pricing: Foundation at $35 per seat per month, Horizon at $299 a month for growing teams, and a custom Frontier tier, with a 50 percent startup discount.
Choose Plain if you are an engineering-led B2B company that finds the incumbents heavy and the e-commerce tools irrelevant. It is the tasteful, technical option, and the flat AI pricing makes costs predictable in a category where the meter usually runs by the ticket.
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Pylon is what a help desk looks like when you start from Slack instead of email. Founded in late 2022 by Advith Chelikani, Marty Kausas, and Robert Eng through Y Combinator, it noticed that modern B2B support had quietly moved into shared Slack Connect and Teams channels, where traditional ticketing systems are blind. Pylon makes those channels first-class support surfaces: threads become tracked issues with owners and SLAs, AI answers routine questions in-channel from your docs and past conversations, and everything rolls up into proper reporting alongside email and in-app chat.
The company has grown at a pace that turned heads, reporting five-fold-plus revenue growth in consecutive years, over a thousand B2B customers including Together AI, Cognition, Temporal, AssemblyAI, and HackerRank, and a $31 million Series B co-led by Andreessen Horowitz and Bain Capital Ventures in 2025, bringing total funding to $51 million. Its positioning has sharpened into "the agentic support platform" for B2B, with a family of named AI agents, Support, Assist, Background, and Slack, plus account intelligence that surfaces health signals across every customer conversation.
Pricing starts at $59 per seat per month billed annually, with AI capabilities sold as add-ons, including a per-resolved-ticket component for the autonomous agents; there is no free plan, and Enterprise carries seat minimums.
Pylon is the obvious shortlist item for post-sales teams at B2B software companies, especially where customers already live in shared Slack channels and the support, success, and solutions functions blur together. If your support is consumer email and chat volume, the e-commerce and SMB tools in this directory will fit better.
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