Codegen vs Devon
Codegen and Devon are both popular tools in the AI Agents space. Codegen uses a paid model starting at $49/mo, while Devon is open-source from Free. Devon offers a free tier, while Codegen does not. Below we break down features, pricing, strengths, and weaknesses to help you decide which tool fits your workflow best.
Last updated: July 2026
Quick Verdict
Choose Codegen if you want ai agent for automated code migrations and large-scale refactors.. Codegen's biggest strengths include unmatched at large-scale code transformations and semantic understanding prevents breaking changes. It's also rated higher (3.5 vs 3.3). Choose Devon if you prefer open-source autonomous ai software engineer inspired by devin.. Key advantages include free open-source alternative to devin and community-driven development and improvements. It also has a free tier to get started.
| Codegen | Devon | |
|---|---|---|
| Pricing | $49/mo | Free |
| Free Tier | No | Yes |
| Pricing Model | Paid | Open-source |
| Rating | ★ 3.5 | ★ 3.3 |
| Categories | AI Agents | AI Agents |
| Key Features | 6 features | 6 features |
| Feature | Codegen | Devon |
|---|---|---|
| Automated code migrations and framework upgrades | ✓ | — |
| Semantic code graph for deep codebase understanding | ✓ | — |
| Large-scale refactoring across entire repositories | ✓ | — |
| Dependency analysis and impact assessment | ✓ | — |
| Custom transformation scripts | ✓ | — |
| CI/CD integration for automated changes | ✓ | — |
| Autonomous software engineering agent | — | ✓ |
| Natural language task specification | — | ✓ |
| Codebase navigation and code editing | — | ✓ |
| Shell command execution | — | ✓ |
| Multi-step task planning and execution | — | ✓ |
| Support for multiple LLM providers | — | ✓ |
Codegen
Pros
- + Unmatched at large-scale code transformations
- + Semantic understanding prevents breaking changes
- + Saves weeks of manual migration work
- + Strong dependency analysis capabilities
Cons
- − Expensive for individual developers
- − Overkill for small projects or simple refactors
- − Requires onboarding time to configure properly
Devon
Pros
- + Free open-source alternative to Devin
- + Community-driven development and improvements
- + Good for experimenting with autonomous agents
- + No expensive subscription required
Cons
- − Significantly less capable than commercial alternatives
- − Early-stage project with frequent breaking changes
- − Limited documentation and support
The Bottom Line
Choose Codegen if: you want ai agent for automated code migrations and large-scale refactors.. It holds a higher user rating (3.5 vs 3.3). Keep in mind: expensive for individual developers.
Choose Devon if: you prefer open-source autonomous ai software engineer inspired by devin.. It has a free tier to get started, which Codegen lacks. It's completely free to use. Keep in mind: significantly less capable than commercial alternatives.
Both tools compete in the AI Agents space. The right choice depends on your specific needs, team size, and budget.
Claude Code
Devin
Cline
Aider
OpenHands
Sweep