Plain vs Pylon (2026)
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 pricing and an estimated monthly bill, channels, compliance claims, and integrations, plus when each is the better fit, so you can pick on the facts rather than either vendor's own sales page.
At a glance
| Attribute |
 Plain
|
 Pylon
|
|---|---|---|
| What it is | API-first support platform for technical B2B teams, with AI that understands your product. | The support system for B2B companies: shared Slack channels, ticketing, and AI in one platform. |
| Pricing | Paid · $45/seat/mo billed annually | Paid · Custom |
| Est. monthly cost | $450/mo $45 per seat/mo; Foundation plan, annual billing; $55 month-to-month; 7-day trial | No published price to estimate |
| Founded | 2020 | 2022 |
| Categories | B2B & Technical Support Help Desk & Ticketing | B2B & Technical Support Help Desk & Ticketing |
| Channels | ||
| Chat | ✓ | ✓ |
| ✓ | ✓ | |
| Voice | — | ✓ |
| SMS | — | ✓ |
| — | ✓ | |
| Compliance (vendor-claimed) | ||
| SOC 2 | ✓ | ✓ |
| HIPAA | — | ✓ |
| GDPR | — | ✓ |
| ISO 27001 | — | ✓ |
| ISO 42001 | — | ✓ |
| Data residency | UK (AWS London) | US, EU |
| Languages | Not verified | Not verified |
| What the AI can do | ||
| Takes actions | Not verified | ✓ |
| Hands off to a human | ✓ | ✓ |
| Choice of LLM | ✓ | Not verified |
| Buying | ||
| Free trial | 7-day free trial | Not verified |
| How you buy | Self-serve signup | Sales-led (demo first) |
| Minimum commitment | Billed annually | Minimum 5,000 credits, minimum seat count, annual standard contract |
| Company | Independent, venture-backed | Independent, venture-backed |
| Works with | Slack Microsoft Teams Discord Linear Jira PagerDuty GitHub incident.io Shortcut Rootly | Slack Microsoft Teams Discord WhatsApp Telegram Salesforce HubSpot Jira Linear Notion Confluence |
| Key features |
|
|
| Next step |
Full listing Visit site → |
Full listing Visit site → |
Estimates assume 5,000 conversations a month, 60% handled by AI and 10 agent seats, at each vendor's published list price (the cost calculator's model); treat them as a floor, not a quote. Compliance rows are what vendors publicly claim, and “Not verified” means we have not confirmed that fact yet, not that the tool lacks it.
Choose Plain or Pylon?
Choose Plain if
Best for: B2B and developer-facing companies whose customers ask technical questions in shared Slack channels, Discord and email, and want an API-first help desk with an AI agent included at no per-resolution charge, from a published $45 per seat on annual billing with a 7-day trial and SOC 2 coverage.
- you want a longer, proven track record
Look elsewhere if you run consumer support at volume, need voice, or need hosting outside the UK: Plain's verified channels are chat and email and its residency is AWS London. AI usage is metered through monthly credits.
Choose Pylon if
Best for: B2B companies whose customers live in shared Slack Connect and Teams channels and want those threads tracked as tickets with SLAs, AI answers in-channel, email and chat alongside, account health signals, US or EU hosting and SOC 2 coverage.
- you need Voice, SMS, and WhatsApp coverage
- you need a vendor that publicly claims HIPAA, GDPR, and ISO 27001
Look elsewhere if you run consumer support, want a free plan or a self-serve start, or need to see prices first: Pylon is quote-led, has no free tier, sells AI as add-ons with per-resolution components, and carries seat minimums on Enterprise.
About Plain
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 $45 per seat per month billed annually ($55 month to month), Horizon at $99 per seat 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.
Read the full Plain listing → · See Plain alternatives →
About Pylon
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.
Read the full Pylon listing → · See Pylon alternatives →
Know when Plain or Pylon changes
One plain-text email at the start of each month with every verified price change, acquisition and new listing across the directory, including any change to Plain or Pylon. No tracking pixels, unsubscribe in one click.