How is token usage tracked per user?

Every AI call writes to a usage table: user_id, prompt tokens, completion tokens, model, timestamp. The API layer reads the user's monthly total before each call and rejects if over plan. The dashboard rolls up per-user and per-plan token spend.

How do I swap models (OpenAI → Anthropic)?

Webtwizz scaffolds a thin wrapper around the model call so the rest of the app doesn't care which provider is responding. Switching models is changing the wrapper's import. A/B testing models is supported via a feature flag on the user record.

How do I set per-tier token quotas?

Plan limits are stored as a config object: { free: 50000, pro: 500000, team: Infinity }. The API layer reads the user's plan and current-period usage, rejects with a clean error if over. The frontend hides the call button if at limit.

What about cost margin per user?

Build a margin dashboard: revenue per user (from Stripe) minus token cost (from usage). Output: this user costs $X in tokens, pays $Y, nets $Z. Spot-check Pro users who use heavily; they're where margin breaks.

Build an AI SaaS App with AI

AI features + paid tiers + token tracking. The four pieces every AI SaaS needs, generated in a couple hours instead of a couple weeks.

Webtwizz AI Full-Stack Builder Interface Preview

Auth + AI + billing + portal wired

Tier templates ready out of box

Code ownership

Vendor model lock-in

01 / What you get

AI SaaS App, generated.

Click Generate from the box above. Real Next.js code, real database, real integrations - not a sandbox. Each piece below ships in the first prompt.

Auth (Supabase) + Stripe subscriptions in three tiers (Free, Pro, Team)

AI feature scaffold: streaming chat or generation, model swap-able

Per-user token usage tracked, displayed in-app, enforced at API layer

Plan-gated AI calls: Free gets N/month, Pro gets more, Team unlimited

Token cost dashboard so you can see margin per user, per plan

The same shape becomes

3 variants you can ship.

AI writing tool

Generate copy, posts, emails. Per-document history, version compare, export.

AI image generator

Wraps DALL-E, Stable Diffusion, or Midjourney API. Gallery, plan-tiered resolution.

AI summariser / search

Upload docs, ask questions, search semantically. Document-grounded RAG.

Pixel-perfect control over every detail

Fine-tune typography, colors, spacing, and layouts with precision. See changes instantly as you design.

Built-in content and data

Manage your content directly in the builder, or connect a database for dynamic data like products, blog posts, and user accounts. No technical setup needed.

AI that actually builds

Describe what you want and watch it come to life. The AI creates pages, adds features, fixes issues, and refines your app through natural conversation.

Layers panel

See your entire page structure at a glance. Select, reorder, and nest elements with drag and drop precision.

Custom components

Build once, reuse everywhere. Create your own components and drop them into any page instantly.

Pages panel

Manage all your pages in one place. Add, duplicate, and organize your site structure effortlessly.

For people who hate $99-per-seat tools.

→Solo builders shipping AI wrappers around a specific niche

→Teams adding AI features to an existing SaaS

→Founders launching a paid AI tool without rebuilding boilerplate

Powerful integrations

Payments, database, AI, email, analytics. Wired up the moment you click connect.

Stripe

Payments

Supabase

Database & Auth

OpenAI

AI · GPT

Anthropic

AI · Claude

Resend

PostHog

Analytics

Sentry

Errors

Suggest an integration

Why generate it instead of buying it.

“

Building the AI part is fun. Building the auth + Stripe + usage-tracking + webhook handling around it eats a weekend even with a starter. Generate it in an afternoon and spend the saved time on prompt engineering.

“

You own the model choice. Swap OpenAI → Anthropic → open-weight Llama by changing one line. Your business is the prompts and the UX, not the inference provider.

Head-to-heads: vs Lovable · vs Bolt · vs v0 · vs Replit

Frequently Asked Questions

More saas apps you can ship.

SaaS with Subscription Billing

Login, Stripe Checkout, plan limits, customer portal - the four pieces every paid SaaS needs, generated and wired up. Skip the boilerplate, ship the actual product.

AI Chatbot with Knowledge Base

Upload your docs. The AI answers questions grounded in your content, with citations. Skip Intercom Fin's $0.99 per resolution.