Plain vs Zendesk (2026): which should you pick?
As of Nov 12, 2026, Zendesk grades higher than Plain: 2.4 against 2.0 out of 4.0.
Checked Oct 17, 2026 and Nov 12, 2026 · graded Oct 17, 2026 and Nov 12, 2026 by ToolGPA
Zendesk grades higher on features and ease of use. They get the same grade on value for money, the free plan and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Plain
Support platform for B2B teams, built around Slack and AI agents
Zendesk
Ticketing, messaging, help center and AI agents for support teams
Which one is for you
Pick Plain if
- Fits if your customers are software companies that talk to you in Slack
- Works for a team of 5 or fewer on Foundation
Look elsewhere if
- Pricey if you grow: Foundation caps at 5 seats and Horizon needs 3 to 10 at $99 each
- Skip it if you need SLAs or Microsoft Teams without Horizon
- Tight if you lean on AI: 1,000 credits a month on Foundation, with extra at $10 per 1,000
- Watch out: SSO, SCIM and HIPAA need the sales-only Frontier plan
Pick Zendesk if
- Fits if your team answers email, chat and phone and wants one queue for all of it
- Works for funded startups, which can get Suite Professional free for 6 months
Look elsewhere if
- Pricey if you need live chat or a help center, as both start at $55 an agent billed yearly
- Too light for chat-first teams on the $19 plan, which covers email tickets only
- Skip it if you need a fixed bill, since AI resolutions past the allowance cost $1.50 to $2 each
- Watch out: Copilot is a $50 an agent add-on, and phone numbers and call minutes are billed on top
- Watch out: the listing doesn't say whether the trial needs a card, and Suite Enterprise is sold only through sales
How we grade them
| 2.0GPAPlainFair | 2.4GPAZendeskFair | |
|---|---|---|
| Value for money | D$45 per user a month billed annually is above the dearer quarter ($39), Foundation stops at 5 seats, and SLAs and escalation paths need Horizon at $99, past the dearest tenth ($89). | DSupport Team is $19 an agent billed yearly, a little under this category's middle, but it's email tickets only. Chat, phone and a help center start on Suite Team at $55 an agent, above the dearest tenth of help desks, and extra AI resolutions are $1.50 to $2 each. |
| Free plan and trial | CA 7-day trial with no credit card. There is no free plan. | CA 14-day free trial of Suite Professional with Copilot, which shows you the top of the range. There's no free plan, and the listing doesn't say whether the trial needs a card. Funded startups can get 6 months free. |
| Features | CSlack, email and in-app channels, customer cards, workflows, a help center and AI agents. The listing's gap: SLAs, Teams and CRM links are Horizon only. | BTicketing across email, chat, social and phone, AI agents on every plan, help centers in 40+ languages with forums, voice numbers in 75+ countries, an IVR and reports you ask for in plain words. The whole job is covered. |
| Ease of use | CNo store rating on record, and workflows, channels and AI agents need setting up. | B4.5 from 4,219 App Store ratings for the agent app. Prebuilt dashboards and pre-written replies come on every plan, but routing, triggers and automations take setting up. |
| Platforms and integrations | BWeb only, with 8 listed integrations including Linear, Jira and Slack. No phone or desktop app on record. | BWeb, iPhone and Android, with WhatsApp, Facebook, Instagram, X, Slack, WeChat and LINE as channels, and an API. No desktop app, which keeps it off an A. |
| Best for | B2B support that lives in Slack | support teams handling email, chat and phone |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Plain and Zendesk. How we grade
Price against what you get
Plain starts at $45 a month for each person and scores 2.3 out of 4 on features, ease of use and platforms. Zendesk starts at $19 a month for each person and scores 3.0.
Zendesk scores higher and starts $26 a month lower. Of the other help desk and live chat tools on the chart, 19 score higher than Plain for less, and 1 scores higher than Zendesk for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Plain also covers shared inbox and workflow automation.
- Zendesk also covers reports.
At a glance
| Plain | Zendesk | |
|---|---|---|
| Pricing | Free trial | Free trial |
| Starts at | $45 per user / month, billed annually ($55 billed monthly) | $19 per agent / month, billed annually ($25 billed monthly) |
| Free plan | None | None |
| Free trial | 7-day free trial, no credit card required | 14-day free trial of Suite Professional with the Copilot add-on |
| Web | ||
| iOS | ||
| Android | ||
| Made by | Not Just Tickets Ltd | Zendesk, Inc. |
| Price read from | plain.com | zendesk.com |
| Checked | Nov 12, 2026 | Oct 17, 2026 |
Worth knowing
Plain
- Foundation is capped at 5 member seats and Horizon needs at least 3, up to 10; larger teams go to the sales-only Frontier plan.
- AI credits are limited per month (1,000 on Foundation, 2,500 on Horizon); extra credits are $10 per 1,000 up to $100 per 10,000.
- SLAs, escalation paths and Microsoft Teams need Horizon at $99 per user / month; SSO, SCIM and HIPAA need Frontier.
- Plain lists a startup program with a $6,000 flat fee for Horizon, 10 seats and 12 months, for early-stage teams of ten or fewer.
Zendesk
- Support Team covers email ticketing only; live chat, voice and a help center start at Suite Team, $55 per agent / month billed annually.
- AI resolutions beyond the included allowance cost $1.50 each on a committed volume or $2.00 each pay-as-you-go.
- Copilot, which adds Auto Assist and suggested first replies, is an add-on at $50 per agent / month billed annually.
- Phone numbers and call minutes are billed as add-ons, and Suite Enterprise is sold only through the sales team.
Key features
Plain
- Customer Agent
- An AI agent that answers customers directly. It uses 100 credits per resolution on every plan.
- Sidekick Agent
- An AI agent for the support team that uses 15 to 300 or more credits a task depending on effort.
- Slack and email channels
- Support threads come in from Slack channels, email addresses, in-app forms and live chat, with Microsoft Teams and Discord on higher plans.
- Customer cards
- Unlimited customer cards show account data next to a thread, with a stated data freshness of 15 seconds.
- Workflows
- Unlimited workflows, auto-labelling, urgency detection and thread summaries are on every plan.
- Developer platform
- The comparison table lists an API, webhooks, events, MCP and custom channels.
Zendesk
- Ticketing across channels
- Email, messaging, phone and social conversations land in one ticket queue, with routing, pre-written responses, triggers and automations.
- AI agents billed per resolution
- AI agents answer email on every plan and chat wherever messaging is on. Each agent seat includes 5 automated resolutions a month (10 on Suite Professional).
- Messaging and live chat
- Suite plans add chat for websites and apps plus WhatsApp, Facebook, Instagram, X, Slack, WeChat and LINE as channels.
- Help center
- Suite Team includes one help center in one language. Suite Professional allows up to 5 help centers in 40+ languages, plus community forums.
- Voice
- Phone support in the browser with toll-free or local numbers from 75+ countries. Suite Professional adds an IVR phone tree.
- Reporting
- Prebuilt analytics dashboards on every plan. Suite Professional adds Quick Reports, which builds reports from questions typed in plain language.
Plans
Plain
Foundation$45
per user / month, billed annually ($55 billed monthly)
Up to 5 member seats, unlimited viewers, 1,000 AI credits a month, Slack, email and in-app channels, Linear, Jira and a help center. 7 days of reporting.
Horizon$99
per user / month, billed annually
3 to 10 member seats, 2,500 AI credits a month, Microsoft Teams, SLAs, business hours, escalation paths, CRM integrations and all-time reporting history.
FrontierCustom
Custom credits and seats, multiple workspaces, SSO and SCIM, HIPAA, custom contracting and a dedicated customer success manager. Billed annually.
Zendesk
Support Team$19
per agent / month, billed annually ($25 billed monthly)
Email ticketing with routing, prebuilt dashboards, pre-written replies and automations. No help center, live chat or phone.
Suite Team$55
per agent / month, billed annually ($69 billed monthly)
Adds messaging and live chat, telephony, omnichannel routing, a knowledge base and Action Builder, with one help center in one language.
Suite Professional$115
per agent / month, billed annually ($149 billed monthly)
Adds skills-based routing, an IVR phone tree, AI writing tools, Quick Reports and App Builder, and up to 5 help centers in 40+ languages.
Suite Enterprise + CopilotCustom
Adds intelligent triage, Auto Assist, generative AI for voice, approval workflows, a sandbox and custom agent roles. Sold through sales.
Ways to pay less
Plain
- Startups
50% off Horizon for early-stage startups
A $6,000 flat fee covers 12 months and 10 seats of Horizon. Eligibility is VC-backed up to $5 million in funding, 10 or fewer on the support team, and not already a customer.
- Annual discount
20% off Foundation with annual billing
The pricing page shows Foundation at $45 per user a month billed annually against $55 billed monthly, labelled a 20% saving.
Zendesk
- Annual discount
About 20% off with annual billing
Zendesk's pricing page marks annual billing as 20% off: Suite Team is $55 per agent a month billed yearly against $69 billed monthly.
- Startups
Startups: 6 months free, up to 2 years via partners
Funded startups up to Series B and under 10 years old get Suite Professional and Copilot free for 6 months, or 1 to 2 years through VC partners, for up to 50 agents.
Common questions
Which is cheaper, Plain or Zendesk?
As of Nov 12, 2026, Zendesk is cheaper to start with: $19 a month for each person, against $45 a month for each person for Plain. Plain starts at $45 per user / month, billed annually ($55 billed monthly), and Zendesk starts at $19 per agent / month, billed annually ($25 billed monthly).
Which has a free plan, Plain or Zendesk?
As of Nov 12, 2026, neither Plain nor Zendesk has a free plan. Both have a free trial.
Which platforms do Plain and Zendesk run on?
As of Nov 12, 2026, only Zendesk lists iOS and Android apps. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.