Tessl vs Devin: Which is Better in 2026?
Choosing between Tessl and Devin comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Tessl
The package manager for agent skills, enabling discovery, evaluation, and sharing of AI agent capabilities.
Best for you if:
- • You need something completely free
- • You need AI agents features specifically
- • Package manager for AI agent skills.
- • Evaluates skills from public GitHub repositories.
Devin
AI software engineer by Cognition Labs
Best for you if:
- • You need AI coding features specifically
- • Devin is an AI software engineer that can autonomously write, test, and deploy code
- • It handles complex engineering tasks from planning to implementation in a sandboxed environment
| At a Glance |  Tessl |  Devin |
|---|---|---|
Starts at | Free | $20/monthCore |
Best For | AI Agents | AI Coding |
Rating | - | - |
Choose Tessl or Devin?
Choose Tessl if
The package manager for agent skills, enabling discovery, evaluation, and sharing of AI agent capabilities.
- Simplifies discovery of AI agent skills
- Provides performance insights for skill evaluation
- Fosters community contribution through an open registry
- You want a fully free tool (Devin requires payment)
- Your work is AI agents-shaped, not AI coding-shaped
Choose Devin if
AI software engineer by Cognition Labs
- AI software engineer
- End-to-end tasks
- Good for automation
- Your work is AI coding-shaped, not AI agents-shaped
| Feature | Tessl | Devin |
|---|---|---|
| Pricing Model | Free | Paid |
| User Rating | No ratings yet | No ratings yet |
| Categories | AI AgentsDeveloper Tools | AI CodingAI Agents |
In-Depth Analysis
Tessl
The package manager for agent skills, enabling discovery, evaluation, and sharing of AI agent capabilities.
Strengths
- +Simplifies discovery of AI agent skills
- +Provides performance insights for skill evaluation
- +Fosters community contribution through an open registry
- +No sign-up required to evaluate skills
- +Acts as a due diligence tool for code reuse
Weaknesses
- -Limited to public GitHub repositories
- -Information on specific evaluation metrics is not detailed
Key features
Devin
AI software engineer by Cognition Labs
Strengths
- +AI software engineer
- +End-to-end tasks
- +Good for automation
- +Innovative approach
- +Active development
Weaknesses
- -Waitlist/limited access
- -Expensive
- -Accuracy varies
- -Not replacement for devs
- -Early stage
Key features
Pricing: Tessl vs Devin
| Plan | Tessl | Devin |
|---|---|---|
| Tier 1 | N/A | $20 month Core |
| Tier 2 | N/A | $500 month Team |
| Tier 3 | N/A | custom Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on Tessl pricing and Devin pricing.
Who Should Use What?
On a budget?
Tessl is free. Devin is paid.
Go with: Tessl
Want the highest-rated option?
Neither has user reviews yet.
Go with: Tessl
Value user reviews?
Neither has user reviews yet.
Go with: Devin
3 Questions to Help You Decide
What's your budget?
Tessl is free. Devin is paid. Go with Tessl if free matters most.
What's your use case?
Tessl is a AI agents tool. Devin is in AI coding. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Devin
- Our pick for this comparison
Tessl
- Completely free
- Better fit for AI agents
The Bottom Line
Devin is our pick. That said, Tessl is free, hard to beat on price.
Frequently Asked Questions
Is Tessl or Devin better?
Devin is rated in our evaluation. Tessl is free and Devin is paid.
What are Tessl and Devin used for?
Tessl: The package manager for agent skills, enabling discovery, evaluation, and sharing of AI agent capabilities.. Devin: AI software engineer by Cognition Labs.
What does Tessl cost vs Devin?
Tessl is completely free. Devin is a paid tool. Visit their websites for detailed pricing.