Arythmatic Connect VS Slack
Per-tenant, not per-seat. With full history.
Slack is brilliant for ten-person teams. It is hostile to communities. Per-seat pricing makes 500 free members impossible. The free tier loses 90 days of history. Nobody finds your Slack from Google.
Why people compare them.
You picked Slack because everyone on the team already used it. Now you are trying to run a customer community in it and realising it was built to be the inside of a company, not the inside of a community. The economics are wrong, the history disappears, the door is locked.
Where Slack breaks down.
Per-seat pricing punishes growth.
Inviting a thousand free members is not cheap — it is the same as hiring a thousand employees in Slack's billing model. Communities pay by member count; team chat pays by team size. Different problems, different pricing.
Free tier loses 90 days of history.
Slack's free plan deletes messages older than 90 days. The community knowledge you built up over a year — gone. Pay to keep it, or watch it evaporate.
No public discoverability.
Slack workspaces are invite-link only. No SEO, no homepage, no way for a prospective member to discover the community via search. You drive every signup yourself.
Chat-only — no feed, no articles, no Q&A.
Slack is the conversation. There is no first-class content surface for the things that should outlive the conversation: announcements, long-form posts, the answers to recurring questions.
Where Connect wins.
Per-tenant pricing.
You pay for the room, not the chairs. A 50-member free community costs $0. A 500-member growing community is $49/month. A 2,500-member professional community is $119/month. Predictable, member-agnostic, designed for the shape of communities.
Full history on every tier.
Nothing is deleted on the schedule of someone else's billing department. The conversation from a year ago is still searchable today.
Public communities indexed by default.
Your public spaces get sitemap entries, OG tags, structured data. Google finds you. Prospective members find you via search instead of via your own marketing budget.
Feed + articles + Q&A.
Chat is one surface. The feed is another (announcements, posts, events). Articles are a third (long-form). Q&A is a fourth (with accepted answers). Each is built for its actual use case.
AI on Growth, not on Enterprise.
Catch-me-up summaries and suggested replies on Growth at $49/month. Slack's AI is on the Enterprise tier — talk-to-sales pricing for what amounts to good summaries.
Feature-by-feature.
| Feature | Slack | Connect |
|---|---|---|
| Real-time chat | ✓ | ✓ |
| Threading + reactions + pinning | ✓ | ✓ |
| Per-seat pricing | ✓ | N (per-tenant) |
| Full history on free tier | N (90-day cap) | ✓ |
| Social feed | — | ✓ |
| Long-form articles | — | ✓ |
| Structured Q&A | — | ✓ |
| Public discoverability + SEO | — | ✓ |
| AI summaries | Enterprise tier | Growth tier |
| Reputation + gamification | — | ✓ |
| Custom domain | Enterprise tier | Professional tier |
| Embed SDK for partner integration | — | Growth tier |
Slack runs a team. Connect runs a community. The economics, the surfaces, and the model are all built for different problems.
Try the Free plan.
One public workspace, up to 50 members, no credit card needed. Upgrade when you outgrow it.

