kitio.aiStability AI vs UserAPI.ai
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Stability AI starts at See pricing page and UserAPI.ai starts at $25/mo. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Image and video models
- Stable Audio models
- 3D generation models
- Platform API
- Self-hosted license
- Brand Studio
- Imagine, Upscale and Variation
- Blend and Describe
- Inpaint and Pan
- Animate
- Admin panel
- Code samples and docs
| Feature | Stability AI | UserAPI.ai |
|---|---|---|
| Best for | Image, video, audio and 3D models via API or self-hosted license | Unofficial REST API for generating images with Midjourney |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $25/mo |
| Free plan | Yes | Yes |
| Made by | Stability AI | UserAPI.ai |
| Based in | United Kingdom | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Stability AI starts at See pricing page and UserAPI.ai starts at $25/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free pack
Free
- 50 requests
- One-time per user
Pay per request
$0.04 / request
- Minimum top-up $8
- Per Discord account
Monthly
$25/mo
- Unlimited requests
- Per Discord account
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Stability AI
- Open-weight models you can run yourself
- Covers image, video, audio and 3D
- Several deployment options
- Pricing not shown on the homepage
- Enterprise products need a sales contact
- Self-hosting needs capable GPUs
UserAPI.ai
- Covers most Midjourney actions
- Flat plan with unlimited requests
- 50 free test requests
- Unofficial, may break with Midjourney changes
- Needs your own Midjourney subscription
- Automating Discord accounts carries ban risk
Which one should you choose?
Choose Stability AI if you want:
- Open-weight models you can run yourself
- Covers image, video, audio and 3D
- Several deployment options
Watch out: pricing not shown on the homepage.
Choose UserAPI.ai if you want:
- Covers most Midjourney actions
- Flat plan with unlimited requests
- 50 free test requests
Watch out: unofficial, may break with midjourney changes.
Stability AI vs UserAPI.ai FAQ
What is the difference between Stability AI and UserAPI.ai?
Stability AI: Image, video, audio and 3D models via API or self-hosted license. UserAPI.ai: Unofficial REST API for generating images with Midjourney. Both are models & apis tools.
Is Stability AI or UserAPI.ai cheaper?
Stability AI starts at See pricing page and UserAPI.ai starts at $25/mo. Check both pricing pages for current plans.
Do Stability AI and UserAPI.ai have free plans?
Stability AI: Yes. UserAPI.ai: Yes.
Who makes Stability AI?
Stability AI is made by Stability AI, based in United Kingdom.
Who makes UserAPI.ai?
UserAPI.ai is made by UserAPI.ai.
Which should I choose, Stability AI or UserAPI.ai?
Choose Stability AI if you value open-weight models you can run yourself and covers image, video, audio and 3d. Choose UserAPI.ai if you value covers most midjourney actions and flat plan with unlimited requests.