Mattermost
Stable Diffusion
| Feature | Mattermost | Stable Diffusion |
|---|---|---|
| Pricing | Free / from $10/mo | Free / from $0.01/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.2 / 5 | 4.5 / 5 |
| Best For | devops-teams, security-conscious-orgs, government, enterprise | developers, artists, researchers, privacy-conscious-creators |
| Founded | 2015 | 2022 |
| Messaging | ✓ | ✗ |
| Channels | ✓ | ✗ |
| Playbooks | ✓ | ✗ |
| Integrations | ✓ | ✗ |
| Self Hosting | ✓ | ✗ |
| Compliance | ✓ | ✗ |
| Text To Image | ✗ | ✓ |
| Img2img | ✗ | ✓ |
| Inpainting | ✗ | ✓ |
| Controlnet | ✗ | ✓ |
| Lora Models | ✗ | ✓ |
| Local Deployment | ✗ | ✓ |
| Api | ✗ | ✓ |
✓ Mattermost Pros
- Self-hostable
- Open source
- DevOps integrations
- Secure
✗ Mattermost Cons
- Smaller ecosystem
- Fewer integrations than Slack
- Self-hosting complexity
✓ Stable Diffusion Pros
- Completely free to run locally
- Full creative control with no content restrictions
- Massive community of models, LoRAs, and extensions
- Runs offline on consumer GPUs
✗ Stable Diffusion Cons
- Requires powerful GPU for local use
- Complex setup with ComfyUI or Automatic1111
- Base model quality below Midjourney without tuning
The Verdict
Mattermost is built for devops teams and security conscious orgs, with a focus on messaging and channels. Stable Diffusion targets developers and artists and leads with text-to-image and img2img.
On pricing, Stable Diffusion is the clear winner for budget-conscious users — starting at $0.01/mo compared to $10/mo for Mattermost. That $9.99/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Stable Diffusion offers broader built-in capabilities (7 features vs 6), while Mattermost takes a more focused approach — which can mean a simpler, faster onboarding experience.
Bottom line: Stable Diffusion has a slight overall edge — but if self-hostable matters most to you, Mattermost may still be the right call.