🎉 Your first app is free — build it and publish it to a live link. No card, no API key. The free build uses a lighter AI model. Start free →
Pricing

Two plans. No markup, no surprise overage.

Bring your own Anthropic key and pay them directly, or go Managed for one flat fee with usage included. Every build shows its cost before it runs, on either plan.

No card required

Bring your own key

$0 / month platform fee

Connect your own Anthropic API key. You're billed by Anthropic at their standard rates — we add no markup.

  • All 16 templates, zero tokens spent
  • Unlimited generations at your own pace
  • Full version history, diffs & rollback
  • Security scan + Launch Check on every build
  • Publish to a shareable link
  • Failed generations never count toward your build spend
Start building — free
Try it free first. Every new account gets 1 free build with no API key and no card. To keep costs down, the free build uses a lighter AI model (Claude Sonnet 5), so the result is less polished than builds on either plan, which use our most capable model (Claude Opus 5).

Compare the plans

FeatureBring your own keyManaged
Platform fee$0/mo$15/mo
Anthropic usageBilled directly, no markup$10/mo included, on us
Anthropic API key requiredYesNo
AI modelClaude Opus 5Claude Opus 5
Payment card requiredNoYes, via Stripe
16 templates✓✓
Version history & rollback✓✓
Security scan on every build✓✓
Launch Check (real-browser validation)✓✓
Publish to a shareable link✓✓
Cost estimate before every build✓✓
Which one should you pick? A typical single-file build runs about $0.10 on your own key, so 40 builds costs roughly $4 — cheaper than the $15 Managed fee. Being straight about it: on raw cost, bringing your own key is almost always the cheaper option, because Managed pauses at $10 of included usage (~100 builds) rather than billing you more. Managed is worth it when you'd rather not open an Anthropic account at all, or you want one predictable line on the card instead of a metered bill. The calculator on the homepage runs the numbers for your own volume.

Pricing questions

What happens if I go over the $10/month Managed budget?

Generation pauses until your next billing cycle — you're never silently charged more. Switch to your own API key in Settings to keep going immediately.

How much does a typical build actually cost on my own key?

Most single-file app generations run $0.05–$0.20 depending on complexity, billed by Anthropic at their standard per-token rates. We add no markup on top.

Can I switch between Bring Your Own Key and Managed?

Yes, any time in Settings — add a key or sign in to Managed, nothing about your project or version history changes.

Is there a free trial?

Yes. Sign up and your first build is free, with no API key and no card. It runs on a lighter AI model (Claude Sonnet 5) rather than the Claude Opus 5 model both plans use, so expect a less polished result. After that one build, add your own Anthropic key or upgrade to Managed to keep going.

Do failed generations ever cost me anything?

You're never charged extra — the $15/month Managed fee is flat, and BYOK failures never count toward your session's build-spend meter or cap. One nuance on Managed: a failed attempt still draws from your $10/mo included usage, since that's real Anthropic cost we absorb either way — it just never counts against your visible “builds this month.”

Still deciding? Try the interactive demo — no account, no API key, nothing to spend. Comparing against other builders? Read the honest comparison, including the cases where you should pick a different tool.