← all guidesGuide · 03 · free
My Full AI Stack
Every tool I use to build a real AI app with zero developers, what it does, what it costs, and the 3 I'd start with.
Thinking & building
| Tool | Job in plain words | Cost |
|---|---|---|
| Claude (desktop app) | My co-founder: planning, strategy, writing, reviewing designs | $20/mo |
| Claude Code | The builder: lives on my computer, sees my files, writes and fixes the actual app | included w/ plan |
| API models (tiered) | Inside the app: a cheap model brainstorms, a mid model executes, an expensive model judges | usage: ~$0.001 / ~$0.02–0.10 / ~$0.05 per call |
The app's senses & looks
| Tool | Job | Cost |
|---|---|---|
| Claude Vision (API) | Reads photos: garment type, fabric, neckline, occasions | ~1¢/image |
| PhotoRoom (API) | Cleans photos: background removal + retouch | ~2¢/image |
| Gemini image model (API) | Generates media: avatar + virtual try-on (one vendor for both = same face every time) | ~4–10¢/image |
| FashionCLIP (open-source, on Modal) | Meaning-search over the closet ("elegant office look" → the right items) | ~$10–30/mo GPU, scale-to-zero |
Data & plumbing
| Tool | Job | Cost |
|---|---|---|
| Supabase | Database + login + file storage in one box | free tier → $25/mo |
| Vercel | Hosts the web app | free tier |
| Open-Meteo | Weather for outfit planning, zero signup, zero key | free |
Rules I follow with this stack
- One vendor behind one thin file. I swapped image vendors twice; each swap = one line of code.
- Mock-first. Every AI tool has a fake twin so the whole app runs with zero API keys (and zero cost) while I build screens.
- Free tiers are budget caps. No payment method on file = the bill physically cannot surprise you.
- The expensive model never does cheap work. Judging only.
If you're starting from zero, get these 3 first
- Claude (the $20 plan), your planning partner from day one.
- Claude Code, even non-developers: it explains itself as it works; you learn by watching.
- Supabase free tier, your data has to live somewhere real, and free-tier-as-budget-cap is the safest way to start.
Everything else joins only when a real feature demands it. Tools you add "just in case" become bills you forget.
From the build-in-public series. Follow @maybar.ai