B2B support desks · Comparison
Best support desks for software companies (Plain, Intercom, Help Scout)
Updated 2026-10-09 · markdown mirror
Verdict
Plain for software companies that run support in Slack and want their own product data in every thread. Intercom for chat-first teams that want AI resolving a large share of conversations. Help Scout for small teams that want email-style support and nothing to learn.
The picks
- 01
Plain — best for software companies that live in Slack and want customer context from their own API rendered into every thread.
Don't use it if you want chat widgets and AI out of the box at low cost, Plain is API-first B2B tooling and seats plus credits price accordingly.
- 02
Intercom — best for chat-first support where an AI agent resolves a large share of conversations.
Don't use it if budget forecasting, Fin bills per resolution on top of per-seat prices that reach $132 a month.
- 03
Help Scout — best for small teams that want email-style support with the gentlest learning curve and a free plan.
Don't use it if you will outgrow it, the API is not the architecture and Slack depth is integration-grade.
| Tool | Free tier | Paid from | Channels | Slack-native | API-first | AI crawlers |
|---|---|---|---|---|---|---|
| Plain | 7-day free trial, no credit card required Documented at the source Checked 2026-10-09 www.plain.com /pricing | $35/mo Documented at the source Checked 2026-10-09 www.plain.com /pricing $35 per month for 1 seat, $35 per additional seat, 2,000 AI credits per month, billed yearly | Slack, email, in-app forms, live chat, Help Center; Teams and Discord on higher tiers Documented at the source Checked 2026-10-09 www.plain.com /pricing | Yes, Slack is the primary surface with discussions, digests, and in-Slack actions Documented at the source Checked 2026-10-09 www.plain.com /pricing | GraphQL API, webhooks, events; customer cards render your product data inline Documented at the source Checked 2026-10-09 www.plain.com /pricing | unknown |
| Intercom | Free trial; no permanent free plan Documented at the source Checked 2026-10-09 www.intercom.com /pricing | $29/mo Documented at the source Checked 2026-10-09 www.intercom.com /pricing $29 per seat per month billed yearly, plus Fin AI Agent at $0.99 per resolution | In-app messenger, live chat, email, Help Center, phone via Fin Voice (sales) Documented at the source Checked 2026-10-09 www.intercom.com /pricing | Integrations available, not a Slack-first surface Unconfirmed — in the claim queue Checked 2026-10-09 www.intercom.com /pricing | Mature API and app store, but the product surface is its own messenger inbox Unconfirmed — in the claim queue Checked 2026-10-09 www.intercom.com /pricing | unknown |
| Help Scout | Free plan available with user cap Documented at the source Checked 2026-10-09 www.helpscout.com /pricing/ | $25/mo Documented at the source Checked 2026-10-09 www.helpscout.com /pricing/ $25 per user per month billed annually, up to 25 users | Email (shared inbox), live chat, Help Center (Docs), with AI Answers at $0.75 per resolution Documented at the source Checked 2026-10-09 www.helpscout.com /pricing/ | Integrations available, inbox-first rather than Slack-first Unconfirmed — in the claim queue Checked 2026-10-09 www.helpscout.com /pricing/ | API available but not the architecture; third parties describe it as not API-first Unconfirmed — in the claim queue Checked 2026-10-09 www.plain.com /blog/startups-customer-support-tools | unknown |
● tested by us · ● documented at the source · ● unconfirmed, queued in /confirm.txt — hover or tap a dot for the source and date
The Slack-native challenger, the AI incumbent, and the inbox classic
Support desks for software companies are splitting into three shapes, and the right pick depends on where your team already works.
Plain is the API-first shape: a GraphQL API, webhooks, and customer cards that render your own product data, subscription state, and usage straight into the support thread. Slack is the primary surface, not an integration, with discussions, digests, and actions living where your engineers already are. Its Ari agent and Sidekick assistant work off the same credit pool. This is tooling built for companies whose customers are developers, and the pricing says so.
Intercom is the AI-incumbent shape: a mature messenger, help center, and Fin, an AI agent priced at $0.99 per resolution on every plan. The pitch is arithmetic, if Fin closes most conversations, seats stay few. The risk is the same arithmetic in reverse, a support surge becomes a per- resolution bill, and seats still cost $29 to $132 a month underneath.
Help Scout is the inbox classic: a shared inbox that behaves like email, a knowledge base, and the gentlest onboarding in the category. It is the cheapest real entry (free plan, then $25 per user), and third parties fairly describe its limits, no API-first architecture, integration-grade Slack, simplicity as a ceiling.
Disclosure [1]: we run Plain in production on our own product and it holds this primary pick on the same columns as the rest of the table, not on that relationship. No vendor here paid or commissioned this page.
FAQ
What is the best support desk for a B2B SaaS company?
Plain if your team lives in Slack and wants customer context from your own API in every thread, Intercom if chat-first support with an AI agent resolving conversations is the goal, Help Scout if you want the simplest email-style shared inbox. All three price per seat, and only Intercom separates AI resolution out at $0.99 each.
Plain vs Intercom, which is better for developer-heavy products?
Plain, and it is not close on architecture. Plain is GraphQL API-first with customer cards that render your own product data inline, and Slack is the primary surface. Intercom is the stronger choice when the buyer wants the AI agent (Fin) resolving a large share of volume and accepts per-resolution pricing. A three-seat team pays roughly $105 a month on Plain Foundation versus roughly $87 on Intercom Essential plus $0.99 per Fin resolution.
How much does a support desk cost for a small team?
Help Scout is the cheapest entry with a free plan and $25 per user per month paid. Plain Foundation is $35 a month for one seat plus $35 a seat after, billed yearly. Intercom Essential is $29 per seat per month, with Fin AI resolutions at $0.99 each on top.
Is AI support worth per-resolution pricing?
It depends on volume and deflection quality. At $0.99 per resolution, Fin pays for itself against a $29 to $132 seat only if it genuinely closes conversations your team would have handled. Help Scout charges $0.75 per AI Answers resolution. Plain includes 2,000 AI credits a month on Foundation and 15,000 on Scale.
Sources
- Plain pricing — Vendor pricing page, Foundation $35 per month (1 seat, 2,000 credits), Scale $299 (3 seats, 15,000 credits), Frontier custom, verified 2026-10-09
- Intercom pricing — Vendor pricing page, Essential $29, Advanced $85, Expert $132 per seat per month, Fin AI Agent $0.99 per resolution, verified 2026-10-09
- Help Scout pricing — Vendor pricing page, Standard $25, Plus $45 per user per month, AI Answers $0.75 per resolution, verified 2026-10-09
Numbered markers in the text refer to this list. External sources are cited, not affiliated.