Build an AI image generation tool
For thumbnails, sprites, avatars and memes you can either run models locally with ComfyUI on your own GPU or call hosted models on Replicate and pay per use.
Recommended stack
Model
Framework
- Vercel AI SDK: Free, open-source TypeScript SDK
Hosting
- Vercel: Hobby $0 (personal, non-commercial); Pro $20/mo incl. $20 credit (verified 2026-10-14)
No-code alternative
- Make: Free tier + paid plans (not verified - check site)
Rough monthly cost
$0–20/mo (local ComfyUI free; Replicate per-second)ApproximateDifficulty
Beginner–IntermediateSome links may be affiliate links. Disclosure
Why this stack
- ComfyUI is a free, open-source node-based UI for image models running on your own hardware.
- Replicate hosts many image models behind one API with per-second billing.
- The Vercel AI SDK plus Vercel hosting makes a small front end quick to ship.
Step-by-step
- Try several models in Replicate's web UI and pick one by quality and price.
- Wrap it in a tiny web form that calls the model from a server function.
- Add a gallery and per-user limits.
Common pitfalls
- Check each model's licence for commercial use.
- Generation costs scale with resolution and steps.
- Add content moderation if the public can submit prompts.