Devin vs GPT Engineer
Devin is an autonomous AI software engineer for ongoing development tasks at $20-500/month. GPT Engineer rebranded as Lovable and pivoted to a prompt-to-app generation platform starting at $20/month. While both use AI to produce code, Devin handles iterative development within existing codebases and Lovable generates new web applications from natural language descriptions. This comparison explains when you need an autonomous engineer versus an AI app builder.
| Criteria | Devin | GPT Engineer |
|---|---|---|
| AI Model | Proprietary (Cognition Labs) | GPT-4, Claude |
| Pricing | $500/mo team plan | Free (OSS) / Cloud plans available |
| Code Completion | No inline completion | No inline completion |
| Chat / Agent | Fully autonomous AI engineer | Prompt-to-codebase generation |
| IDE Support | Web-based sandbox environment | Web-based / CLI |
| Language Support | All major languages | All major languages |
| Privacy | Cloud-based, enterprise options | Self-hosted option available |
| Customization | Task-level instructions | Specification-driven, preprompts |
Devin vs GPT Engineer: In-Depth Analysis
Devin and GPT Engineer evolved in very different directions since their launches. Understanding their current states is critical for comparison.
GPT Engineer rebranded as Lovable and shifted from open-source code generation to a commercial AI app builder. Lovable generates React-based web applications from natural language descriptions, with integrated deployment, Supabase database support, and GitHub sync. Pricing starts at $20/month (Starter) with credit-based usage, scaling to $50/month (Pro) and $100/month (Business). Each prompt costs credits based on complexity.
Devin 2.0 by Cognition Labs is a general-purpose autonomous AI engineer that works within existing codebases. It handles feature development, debugging, code review, testing, and infrastructure tasks. The $20/month individual plan includes about 9 ACUs for compute; the $500/month Team plan provides more resources and collaboration.
The tools overlap only minimally. Lovable generates new applications quickly -- you describe what you want and get a working React app in minutes. But it struggles with complex existing codebases and backend logic beyond Supabase. Devin works with any existing codebase and handles complex, multi-file development tasks, but it is slower and more expensive for simple app generation.
For startups prototyping MVPs, Lovable provides faster time-to-working-product at lower cost. For teams maintaining production applications, Devin provides the ongoing development support that app generators cannot. Many teams use Lovable for initial prototyping, then transition to Devin or other tools for iterative development.
Key Differences Between Devin and GPT Engineer
Primary Use Case
Devin is an autonomous engineer for ongoing development in existing codebases. Lovable (GPT Engineer) is an app builder generating new React applications from prompts.
Codebase Support
Devin works with any existing codebase and language. Lovable generates new React/Next.js applications and has limited ability to modify complex existing projects.
Pricing Model
Devin uses ACU-based credits ($20-500/month). Lovable uses prompt credits ($20-100/month). Both can become expensive with heavy usage.
Output Type
Devin produces code changes, PRs, and fixes within your repository. Lovable produces complete web applications with integrated hosting and deployment.
Technology Scope
Devin handles any language and framework. Lovable focuses on React, Next.js, and Supabase, with limited backend flexibility.
Verdict
Devin and GPT Engineer (now Lovable) serve fundamentally different use cases despite both being AI coding tools. Devin is an autonomous engineer that works within existing codebases, iterating on features, fixing bugs, and managing infrastructure at $20-500/month. Lovable (formerly GPT Engineer) is an AI app builder that generates new web applications from prompts at $20-100/month with a credit-based system. Devin is for ongoing software development. Lovable is for rapid prototyping and initial app creation. They rarely compete directly -- the choice depends on whether you are building something new or maintaining something existing.
Pros & Cons Compared
Devin
GPT Engineer
Pricing Comparison
Devin
$20/mo minimumCore plan starts at $20/mo with pay-as-you-go pricing at $2.25/ACU (Agent Compute Unit). Team plan at $500/mo includes 250 ACUs and API access. Enterprise plan with custom pricing for VPC deployment.
GPT Engineer
FreeOpen-source and free under MIT license. Lovable (the commercial evolution) starts at $25/mo.
Shared Language Support
Both Devin and GPT Engineer support these languages:
Which Should You Choose?
Choose Devin if you...
- Teams maintaining and iterating on existing production codebases
- Organizations needing autonomous help with diverse engineering tasks
- Companies working across multiple languages and frameworks
- Teams that need ongoing bug fixing, feature development, and code review
- Organizations with complex backend infrastructure beyond simple databases
Choose GPT Engineer if you...
- Founders and non-technical users building MVP web applications
- Designers prototyping interactive web experiences quickly
- Startups needing rapid proof-of-concept applications
- Teams building React-based CRUD applications with Supabase backends
- Solo developers wanting to go from idea to deployed app in hours
Switching Between Devin and GPT Engineer
Lovable-generated apps can be exported to GitHub, where Devin can then maintain and iterate on them. This is a common workflow: use Lovable for initial generation, then switch to Devin or another agent for ongoing development. If moving from Devin to Lovable, note that Lovable only handles new app generation in React/Next.js and cannot take over existing non-React codebases.
Sources & Methodology
Comparison outcomes are based on criterion-level scoring, pricing disclosures, official feature documentation, and practical workflow fit across IDE and CLI contexts.
- Devin official website
- GPT Engineer official website
- Last reviewed: 2026-02-23
FAQ
Is GPT Engineer the same as Lovable?
Yes. GPT Engineer rebranded to Lovable and pivoted from open-source code generation to a commercial AI app builder platform focused on React web applications.
Can Lovable replace Devin?
No. Lovable generates new web applications from prompts. Devin works with existing codebases on ongoing development. They serve different stages of the software lifecycle.
Which is cheaper for building an MVP?
Lovable at $20/month is typically cheaper and faster for building React-based MVPs. Devin at $20-500/month is better suited for complex projects requiring ongoing iteration.
Can I use Lovable to generate an app then Devin to maintain it?
Yes. This is a common workflow. Generate the initial app with Lovable, export to GitHub, then use Devin (or Cline/OpenHands) for ongoing development and maintenance.
Does Lovable still have an open-source version?
The original GPT Engineer open-source project still exists on GitHub, but the commercial product is now Lovable with different capabilities focused on app generation rather than code generation.