Rapid product prototypes
Turn a product brief into a working interface and application flow before committing a full engineering cycle.
Independent tool overview
GPT Engineer's former commercial web app is now Lovable, an AI software-building platform for creating, editing, hosting, and operating websites and full-stack web applications through conversation.
Visit the official Lovable (formerly GPT Engineer) site ↗
Overview
GPT Engineer now refers to two different things. The open-source gpt-engineer command-line project still exists for developers, while the commercial gptengineer.app product was rebranded as Lovable. The company says existing projects and deployments carried over, with the domain and branding changing.
Lovable has expanded far beyond the early prompt-to-frontend experience. Users can chat to create websites and full-stack web apps, make targeted visual edits, connect backends and external services, sync code with GitHub, add payments, publish to a custom domain, and use Lovable Cloud for hosting, data, authentication, server functions, storage, and app-level AI features.
The platform can get a prototype online quickly, but it does not remove software ownership. Generated code, database rules, authentication, payments, data access, dependencies, costs, accessibility, testing, monitoring, incident response, and compliance still require accountable human review.
Use cases
The strongest fit depends on the job you need the product to complete, not the size of its feature list.
Turn a product brief into a working interface and application flow before committing a full engineering cycle.
Build dashboards, operations tools, intake systems, and lightweight workflows with connected data.
Create and iterate on a web product while keeping code available for technical review and handoff.
Generate landing pages, interactive experiences, forms, and branded website components.
Let designers, operators, and engineers collaborate through prompts, visual edits, workspace controls, and source sync.
Capabilities
Creates and changes web applications from natural-language requirements, plans, images, and follow-up instructions.
Lets users select UI elements and adjust copy, color, layout, spacing, and styling directly.
Supports application backends, authentication, databases, storage, server functions, and external API integrations.
Provides managed hosting and runtime services, with building, Cloud, and app-level AI now drawing from a unified credit balance.
Supports source-code synchronization for external development, version control, reviews, and engineering handoff.
Can add subscription and one-time purchase flows through supported providers such as Stripe and Paddle on eligible plans.
Publishes applications, supports custom domains on paid plans, and provides deployment and hosting workflows.
Plans use a shared workspace credit pool and support multiple collaborators rather than simple per-seat pricing.
Process
Step 1
Define users, roles, data, flows, constraints, non-goals, visual direction, security boundary, and testable acceptance criteria.
Step 2
Generate one complete user journey with real state and failure handling before expanding the app.
Step 3
Sync GitHub so every meaningful change can be reviewed, compared, rolled back, and continued outside Lovable.
Step 4
Model data, permissions, secrets, payment states, and external integrations before giving the agent broad access.
Step 5
Run functional, mobile, accessibility, security, billing, authorization, performance, and failure-path checks.
Step 6
Set budgets and alerts, verify backups and logs, monitor production behavior, and assign a person responsible for incidents and ongoing maintenance.
Cost
Lovable's current Free plan includes 5 daily build credits with a maximum of 30 per month. Pro is $25 monthly or $21 monthly when billed annually. Business is $50 monthly or $42 monthly annually. Enterprise uses custom volume pricing. Credits can be consumed by building, hosting, and AI features, and task cost varies.
$0/month
A limited workspace for trying the builder and small personal projects.
$25/month
Adds a larger shared balance and production-oriented project features.
$50/month
Adds governance and security features for larger teams.
Custom
Volume credits, advanced administration, and dedicated enterprise support.
Pricing checked . Check current pricing at the source ↗
Assessment
Compare
The right alternative depends on the specific output, workflow, controls and budget your project requires.
Coding
Choose Replit Agent for a broad cloud development environment with coding, hosting, databases, and agent workflows.
Explore Replit Agent →Coding
Choose Bolt for another prompt-to-full-stack web app builder with an in-browser development workflow.
Explore Bolt.new →Design
Choose Vercel v0 when frontend quality, React workflows, and Vercel deployment are the main priorities.
Explore Vercel v0 →Questions
The commercial gptengineer.app web product was renamed Lovable. The open-source gpt-engineer command-line project remains separate.
Lovable says existing gptengineer.app projects and deployments remained unchanged after the rebrand, although users had to log in again on the new domain.
Free is $0. Pro is $25 monthly or $21 monthly billed annually. Business is $50 monthly or $42 monthly annually, and Enterprise is custom.
Credits are usage units shared by a workspace for building, running Cloud services, and powering AI features. Consumption depends on the action and plan.
Yes. It supports frontends, backends, authentication, databases, storage, server functions, external APIs, payments, and deployment workflows.
Lovable says users own their projects, code, customer data, and AI output subject to third-party rights. Use GitHub sync and review all generated dependencies and licenses.
It can accelerate design and implementation, but a production app still needs accountable ownership for architecture, security, testing, operations, privacy, billing, and maintenance.
Bottom line
The old GPT Engineer web product should now be evaluated as Lovable, not as a discontinued standalone builder. Lovable is substantially more capable than the original tool and can take a small web app from prompt to production. Its speed is valuable when paired with GitHub, disciplined requirements, security review, testing, budget controls, and a clear technical owner.
Visit Lovable (formerly GPT Engineer) website ↗
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