Is Slack or Thinkific cheaper?

Slack starts at $0 (Free), then $8.75 per user per month (Pro), or $7.25 billed annually (free plan available). Thinkific starts at $54 per month (Basic), or $40 per month billed annually (30 days trial).

Slack vs Thinkific

An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.

The short answer

Both sides assessed

Slack compared with Thinkific

A common migration path for course and training communities that started in Slack. Thinkific costs $54 a month flat rather than per member, keeps every post permanently, organizes discussion into permissioned spaces, and ties community access to a course purchase automatically, none of which Slack can do. Slack keeps better threading and an audience already logged in. If your students' answers are disappearing behind the 90 day wall, that is the signal to move.

Thinkific compared with Slack

Slack is a chat tool being used as a community by default, and its free plan hides messages older than 90 days, which quietly destroys the knowledge base a course community accumulates. Thinkific costs money but keeps every post permanently, ties community access to a purchase, and organizes discussion into spaces rather than an infinite scroll. If your course community currently lives in a free Slack, you are losing the answers your students already wrote.

Choose Slack if

Professional and industry communities under a couple of hundred members whose value is live conversation and access rather than an accumulating archive, especially where members are software or business people who already live in Slack all day and will not install anything new.

Choose Thinkific if

Course businesses and training providers who take teaching seriously, need real curriculum tooling with quizzes, assignments, and certificates, want a community attached to those courses under their own domain, and already have an email marketing platform they are happy with.

Side by side

13 attributes

Attribute	Slack	Thinkific
Category	Community	Community
Starting price	$0 (Free), then $8.75 per user per month (Pro), or $7.25 billed annually (free plan available)	$54 per month (Basic), or $40 per month billed annually (30 days trial)
Pricing model	Per user per month subscription designed for employees, with a permanently free tier limited by message history and app count. There is no community pricing, no member tier, and no commerce layer.	Flat monthly subscription across four published tiers plus a custom priced Plus tier, with limits on communities, spaces, admins, and video bandwidth, and a transaction fee that depends on whether you use Thinkific Payments or your own gateway.
Free plan	Unlimited members and channels, but only 90 days of visible message history, a maximum of ten apps, one to one huddles, and one to one external messaging through Slack Connect.	No
Free trial	The free plan serves as the evaluation path; paid plans are self serve	30 days, full platform access, no sales call
Best for	Professional and industry communities under a couple of hundred members whose value is live conversation and access rather than an accumulating archive, especially where members are software or business people who already live in Slack all day and will not install anything new.	Course businesses and training providers who take teaching seriously, need real curriculum tooling with quizzes, assignments, and certificates, want a community attached to those courses under their own domain, and already have an email marketing platform they are happy with.
Setup time	Minutes to a workspace, a day to a well organized one. The real work is deciding channel structure and writing an onboarding flow in Workflow Builder, because Slack gives new members no guidance by default.	A day for a working school with one course and a community, a few weeks for a polished one. Domain, theme, first course, checkout, and a community with a handful of spaces are all achievable in an afternoon.
Learning curve	Effectively zero for professional members, who already use it daily. Moderate for operators only because Slack's admin tooling assumes an IT context rather than a community one, and much of what a community manager wants simply is not there.	Low to moderate. The course builder is the most approachable in the category, and the community concepts (communities, spaces, roles) are only three ideas deep. The confusing part is the plan matrix, not the software.
Platforms	macOS, Windows, Linux, iOS, Android, Web	Web, iOS and Android via the Thinkific mobile app, Branded iOS and Android apps as a paid add on
Compliance	SOC 2, SOC 3, ISO 27001, GDPR, HIPAA support on higher tiers, FedRAMP on specific Enterprise offerings	GDPR, PCI DSS via Thinkific Payments and Stripe, SOC 2 reporting available to Plus customers
Founded	2013	2012
Headquarters	San Francisco, California, United States	Vancouver, British Columbia, Canada
Ownership	Owned by Salesforce	Publicly traded on the Toronto Stock Exchange (THNC)

Strengths and limitations

Slack

Strengths

Zero adoption friction with professional audiences. Software, product, and business people already have Slack open all day and will join a workspace without installing anything or learning anything.
The best threading model in this category. Replies branch cleanly under a message instead of flooding a channel, which keeps a busy community readable in a way Discord struggles with.
Search quality is genuinely good, with filters by person, channel, and date, and better than every free alternative here within the window it can see.
Slack Connect on Pro shares channels with up to 250 external organizations, which is the strongest legitimate community use case Slack has for a B2B company.

Limitations

The 90 day history limit on the free plan destroys the archive, which is the single largest source of long term community value, and Discord does not have this problem at the same price.
Per member pricing makes upgrading impossible at community scale. A thousand members on Pro is $7,250 a month, or roughly eighty times Circle.
No commerce layer whatsoever: no checkout, no memberships, no entitlement, so charging for access always means a third party invite tool bolted onto Stripe.
No moderation queue, no spam classifier, and no equivalent of AutoMod. Slack assumes a workspace is full of colleagues.

Thinkific

Strengths

The best course tooling among the platforms in this category, with graded quizzes, reviewed assignments, prerequisites, certificates, cohorts, and per student progress reporting.
A publicly traded company with audited financials, roughly $74M in trailing revenue and 276 employees, which is a materially different risk profile from a venture stage community startup.
Communities is a real product now: spaces with independent permissions, post approval, read only spaces, a scoped moderator role, pinned posts, live events inside private spaces, and direct messages as of 2026.
Entry price of $54 a month with unlimited courses, up to 10,000 students, and a custom domain undercuts Kajabi heavily.

Limitations

Community limits are tight where it hurts: one community and five spaces on Basic, one admin seat, and unlimited only on a custom quoted plan.
The 5 percent penalty for using your own payment gateway on Basic is punitive, and even Grow charges 1 percent, so payment independence is never free.
Thinkific's own branding cannot be removed until the $219 Grow plan, which undercuts the white label promise at the price points most small businesses buy.
No email marketing platform, no funnel builder, and a thin affiliate story, so the real monthly cost includes at least one more vendor.

Pricing compared

Slack

Per user per month subscription designed for employees, with a permanently free tier limited by message history and app count. There is no community pricing, no member tier, and no commerce layer.

Free$0
Pro$8.75
Business+$15
Enterprise+Custom

Free Slack is worth using and paid Slack is not, at least not for a community. What the free plan gives you is genuine: unlimited members, unlimited channels, the best threading model in this category, strong search within its window, mature apps, a huge integration directory, and a professional audience who already have it open. What it takes away is the thing that makes a community compound. Ninety days of history means the archive never accumulates, and the members who answer the same question for the fourth time will eventually stop. Upgrading is not a fix but a different problem: at $7.25 per member per year Slack is charging you employee prices for people who are not employees, and a thousand member community would pay $87,000 a year for what Discord provides free and Circle provides for about $1,100. The correct read is that Slack is an acceptable free venue for a small professional community that trades on access rather than on archive, and a bad idea for anything else.

Thinkific

Flat monthly subscription across four published tiers plus a custom priced Plus tier, with limits on communities, spaces, admins, and video bandwidth, and a transaction fee that depends on whether you use Thinkific Payments or your own gateway.

Basic$54
Start$109
Grow$219
Expand$499
PlusCustom

Thinkific is fair value for a course business and poor value for a community business. At $54 a month the entry tier undercuts Kajabi by more than two thirds and gives you unlimited courses, up to 10,000 students, a custom domain, and a community, which is a lot of platform for the money. The catches are all structural rather than hidden: one community with five spaces, one admin, visible vendor branding until $219, and a 5 percent gateway penalty if you refuse to use Thinkific Payments. Where it genuinely wins is instructional depth. Quizzes, assignments, prerequisites, certificates, cohorts, and per student progress reporting are things Circle and Skool do badly or not at all, and if your product is education rather than access, that is worth paying for. Where it loses is everything Kajabi bundles: no email platform, no funnels, no affiliate engine, and a branded app that costs $199 a month extra.

Editorial verdict on each

Slack

Slack is where a great many professional communities live and almost none of them chose it. As a free venue for a few hundred senior people who already have it open, it is legitimately good: threading is the best in this category, search is strong, adoption friction is zero, and Slack Connect handles customer and partner channels better than anything else here. As a community platform it has two disqualifying flaws. The free plan hides everything older than 90 days, so the archive that makes a community valuable over time never accumulates, and Discord does the same job for free while keeping every message forever. And upgrading charges employee prices for people who are not employees: a thousand members on Pro is $7,250 a month, roughly eighty times what Circle costs to host the same community with permanent history, courses, events, and a checkout. There is no commerce layer at all, so charging for access means a third party invite tool bolted onto Stripe, with the fragility that implies. Use free Slack for a small professional group that trades on access. For anything that should still be useful in two years, move to Discord if you want free, Discourse if you want found, and Circle or Heartbeat if you want paid.

Read the full Slack profile

Thinkific

Thinkific is the most credible teaching platform in this category and a competent, deliberately limited community platform. If your members are students rather than an audience, the quizzes, assignments, prerequisites, certificates, cohorts, and progress reporting are worth more than the extra polish Circle brings to discussion, and the $54 entry price is a third of Kajabi's. Being publicly traded with audited numbers is also a real advantage over venture stage rivals whose roadmap depends on the next round. The reservations are specific and worth negotiating around: one community with five spaces and one admin on Basic, vendor branding you cannot remove until $219, a branded app that costs $199 a month extra, no email marketing included, and a 5 percent penalty if you insist on your own Stripe. Buy Thinkific to run an education business with a community attached. Do not buy it to run a community with some lessons in it.

Read the full Thinkific profile

Slack profile last reviewed 2026-08-22; Thinkific last reviewed 2026-08-22. Pricing is compiled from public sources and can change without notice. See our methodology.