TL;DR
Use Slack for formal business communication, deep app integrations, and cross-company collaboration. Use Discord if you are on a tight budget, need great voice channels, or run a community that prefers informal chat.
Discord's free tier is more generous. Slack's paid tier is more powerful. The right call depends on how your team actually communicates.
The Short Version
Slack is a business tool that happens to look like a chat app. Discord is a chat app that businesses sometimes use. That difference shapes everything about how each tool works.
Pricing
| Slack | Discord | |
|---|---|---|
| Free tier | 90-day history, 10 apps | Unlimited history, voice |
| Paid starts at | $8.75/user/month | $3/user/month |
| Message history | Unlimited (paid tier) | Unlimited (free) |
| File upload limit | 1GB (paid tier) | 25MB (free), 500MB (paid) |
| Voice channels | Huddles (paid tier) | Built-in, unlimited (free) |
On pricing Discord wins. Its free tier includes unlimited message history, voice channels, and screen sharing. Slack's free tier limits you to 90 days of messages and 10 app integrations. The paywall comes fast as your team grows.
What Slack Does Better
Threads
Slack's threads let you keep side conversations organized without cluttering the main channel. Reply to a message and the conversation nests under it. Everyone in the channel sees the thread indicator, but the main channel stays clean. Discord does not have threads. Side conversations either happen in the main channel or you spin up a new text channel. Over time, this means more channels to manage and more scrolling to catch up.
Integrations
Slack's app directory has 2,600+ integrations. Google Drive, Notion, Jira, Salesforce, GitHub — everything connects with a click. The Slack API is mature, and most SaaS tools ship a Slack integration before they build their own notification system. Discord has webhooks (functional but need setup) and a handful of verified bots. There is a gap.
Slack Connect
Need to communicate with a client, vendor, or partner who also uses Slack? Slack Connect creates shared channels between companies. No switching tools, no "let me email you instead." It is a genuinely useful feature if you work across organizations. Discord has no equivalent.
Canvas and Huddles
Slack Canvas lets you create persistent documents — project briefs, onboarding docs, meeting notes — inside Slack without leaving the app. Huddles are lightweight voice calls that start from any channel or DM. Together, they reduce the need for Google Docs and Zoom for quick internal communication. Discord has better voice channels but nothing like Canvas.
What Discord Does Better
Voice Channels
Discord's voice channels are the best in the business. Low latency, high quality, and persistent — you join a voice channel like you would join a text channel. No scheduling, no invites. You can see who is in voice and jump in. Developers running pair programming sessions, gaming teams, and podcast crews all prefer Discord for this reason. Slack's Huddles work but feel like an afterthought.
Community Management
Discord's server structure is designed for communities, not just teams. Roles are granular. You can set up welcome screens, onboarding flows, and verification gates. The moderation tools (slow mode, member screening, audit log, auto-mod) are built for large public servers. Slack was not designed for this use case. If you run a developer community, open-source project, or membership group, Discord is the obvious choice.
Free Tier Generosity
Discord's free tier does not expire your message history. You can scroll back two years and find that conversation about project specs. Slack free tier caps at 90 days. For a small team without a paid budget, Discord is the difference between losing and keeping institutional knowledge.
Developer Features
Discord's webhook API is simple and powerful. Many CI/CD and monitoring tools (GitHub, GitLab, Sentry, Grafana) ship with Discord webhooks out of the box. Discord bots can be built with a straightforward API. Developers who self-host their own tools often prefer Discord for this reason.
The Comparison Table
| Feature | Slack | Discord |
|---|---|---|
| Threaded conversations | ✅ | ❌ |
| App integrations | 2,600+ | Webhooks only |
| Voice quality | Good (Huddles) | Excellent |
| Video calls | ✅ | ✅ (screen share) |
| Cross-company channels | Slack Connect | ❌ |
| Message history (free) | 90 days | Unlimited |
| Enterprise compliance | Full suite | None |
Which One to Pick
Pick Slack if:
- You have a team of 5+ people across different departments
- Your team relies on app integrations (Jira, Google Drive, Notion, GitHub)
- You communicate with clients or partners across companies
- Your organization needs enterprise compliance and data retention policies
- Threaded conversations are important for keeping channels organized
Pick Discord if:
- You run a community, open-source project, or developer group
- Voice communication is a primary use case (pair programming, gaming, podcast)
- Your team is small and budget is tight
- Unlimited free message history matters more than app integrations
- You prefer a more casual, less formal communication style
Our Take
We use Slack internally at GetSaaSRight. The threaded conversations and app integrations make it worth the cost for a distributed team that writes reviews, manages editorial calendars, and communicates with contributors. But I have also run developer communities on Discord and it was the right tool for that job.
If you are starting a business and have budget for one tool, get Slack. If you are starting a community and have no budget, get Discord. They serve different purposes well.
Read full Slack review → · Read full Discord review → · Slack vs Microsoft Teams →