Sprint from idea to running app, powered by AI and a real sandbox.
Describe what you want. Watch SprintBuild generate, run, and preview your app in seconds.
Start building freeWhat you get
A coding agent that actually ships.
SprintBuild combines a frontier-model agent with real execution and a live preview so you can go from idea to working app without ever leaving the browser.
Prompt to full-stack
Describe an app in plain English and SprintBuild scaffolds the project, writes the code, and runs it for you.
Vercel Sandbox execution
Each session spins up an ephemeral Vercel Sandbox so the agent can install packages, run scripts, and test the app safely.
Live preview
A built-in preview pane shows your app the moment the agent boots a dev server. No copy-paste, no local setup.
File explorer
Browse the generated source tree, read any file, and follow the agent as it edits and refactors.
Auto-fix on errors
Build failures and runtime errors stream back to the agent so it can patch issues without you babysitting the loop.
One-click deploy
When you like what you see, deploy the project to Vercel and keep iterating from there.
How it works
Three steps from prompt to product.
- 01
Describe your app
Type a prompt — "an invoice tracker with auth and CSV export" — and pick a model.
- 02
Agent builds it live
SprintBuild boots a Vercel Sandbox, scaffolds the project, writes files, and starts a dev server while you watch.
- 03
Iterate and deploy
Review the preview, ask for changes, then ship to Vercel when it looks right.
Use cases
What you can ship from a prompt.
The agent doesn't pretend to be every tool ever made. These are the builds it's tuned for, with starter prompts you can paste and run today.
AI SaaS Builder
Auth, billing, dashboard, marketing site, and a database — generated in one session and running in a real sandbox.
Starter promptAI Dashboard Generator
Charts, tables, filters, and CRUD wired into a live database. The agent runs the dev server so you click through the actual UI, not a screenshot.
Starter promptAI Internal Tool Builder
Replace fragile spreadsheets and Notion views with a typed, multi-user, role-aware app — generated from your description and running in a sandbox in minutes.
Starter promptAI Landing Page Generator
A real Next.js project with a hero, features, social proof, FAQ, and a working signup flow — not a copy-pasted template.
Starter promptAI MVP Builder
Skip the boilerplate week. Describe the product, pick the models, and watch the agent ship a working MVP into a real sandbox.
Starter promptAI CRUD App Builder
List, detail, create, update, delete — for whatever entity you describe. With a typed database, real validation, and a UI that doesn’t look like a wireframe.
Starter promptBest model for the job
Pick a frontier model. Switch any time.
SprintBuild routes through the Vercel AI Gateway so you can swap between Claude, GPT, and Grok without changing keys or code.
Comparisons
SprintBuild vs the rest.
Honest side-by-side comparisons against every major AI coding platform. Verified against each vendor's public docs.
Comparison
SprintBuild vs Lovable
AI app generator with hosted runtime
Read itComparison
SprintBuild vs Bolt.new
Browser-based AI dev environment
Read itComparison
SprintBuild vs v0 by Vercel
AI UI generator and app builder by Vercel
Read itComparison
SprintBuild vs Replit Agent
AI coding agent inside Replit’s cloud IDE
Read itComparison
SprintBuild vs Base44
AI app builder with managed hosting
Read itFAQ
Questions, answered.
Do I need to install anything?+
No. The agent runs the code inside a Vercel Sandbox, and the preview streams back to your browser.
What stack does the agent build with?+
SprintBuild defaults to Next.js, TypeScript, and Tailwind, but the agent can scaffold any Node-based stack.
Which models are supported?+
Claude Opus 4.6 and Sonnet 4.6, GPT-5.3 Codex, and Grok 4.1 Reasoning. Add more by configuring the Vercel AI Gateway.
Is my code private?+
Each session runs in an isolated, ephemeral sandbox. When the session ends, the sandbox is torn down.
How is SprintBuild different from Lovable, Bolt, or v0?+
SprintBuild runs every session in a real Vercel Sandbox so the agent can install dependencies, run scripts, and start a dev server, then stream the running app back. That means closer parity with production environments than browser-only WebContainer setups, plus your choice of Claude, GPT, or Grok via the Vercel AI Gateway.
Can I export the code I generate?+
Yes. Every session keeps the full source tree visible in the file explorer, and projects you create are saved to your account so you can revisit, rename, or delete past sprints from the dashboard.
How does pricing work?+
Plans are credit-based. Free includes 50 credits/month, Hobby is $20 for 1,000, Pro is $50 for 3,000, and Team is $200 for 15,000 pooled credits. Heavier models like Claude Opus consume more credits per turn. Unused paid credits roll over up to 2× your monthly grant.
Build your next app in a sprint, not a sprint cycle.
Start with a prompt. Get a running app. Keep iterating until it ships.
Start building free