Opik by Comet vs 3LC.AI: Which Should You Choose in 2026?
Choosing between Opik by Comet and 3LC.AI 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.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Opik by Comet
Track, evaluate, and optimize your LLM applications, RAG systems, and agentic workflows.
Best for you if:
- • You need something completely free
- • You need debugging features specifically
- • Open-source platform for LLM application evaluation and monitoring.
- • Automates prompt and agent optimization with multiple powerful optimizers.
3LC.AI
Illuminating the black box: Better, smaller, faster AI models through data preparation and optimization.
Best for you if:
- • You need ai fine-tuning features specifically
- • Full-loop platform for AI data preparation, debugging, and diagnosis.
- • Integrates with existing ML workflows and tools with just 3 lines of code.
| At a Glance |  Opik by Comet |  3LC.AI |
|---|---|---|
Price | Free | Paid |
Best For | Debugging | AI Fine-Tuning |
Rating | —/100 | —/100 |
| Feature | Opik by Comet | 3LC.AI |
|---|---|---|
| Pricing Model | Free | Paid |
| Editorial Score | — | — |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | DebuggingMonitoring | AI Fine-TuningAI Observability |
How Opik by Comet and 3LC.AI Compare
Opik by Comet
Track, evaluate, and optimize your LLM applications, RAG systems, and agentic workflows.
Free
3LC.AI
Illuminating the black box: Better, smaller, faster AI models through data preparation and optimization.
Paid
Opik by Comet is a debugging tool. 3LC.AI is in ai fine-tuning.
Who Should Use What?
On a budget?
Opik by Comet is free. 3LC.AI is paid.
Go with: Opik by Comet
Want the highest-rated option?
Neither has been rated yet.
Go with: Opik by Comet
Value user reviews?
Neither has user reviews yet.
Go with: Opik by Comet
3 Questions to Help You Decide
What's your budget?
Opik by Comet is free. 3LC.AI is paid. Go with Opik by Comet if free matters most.
What's your use case?
Opik by Comet is a debugging tool. 3LC.AI is in ai fine-tuning. Pick the category that matches your needs.
How important are ratings?
Not all tools have been rated yet.
Key Takeaways
Opik by Comet
- Completely free
- Our pick for this comparison
3LC.AI
- Better fit for ai fine-tuning
The Bottom Line
Opik by Comet is our pick.
Frequently Asked Questions
Is Opik by Comet or 3LC.AI better?
Opik by Comet scores high/100 in our evaluation. Opik by Comet is free and 3LC.AI is paid.
What are Opik by Comet and 3LC.AI used for?
Opik by Comet: Track, evaluate, and optimize your LLM applications, RAG systems, and agentic workflows.. 3LC.AI: Illuminating the black box: Better, smaller, faster AI models through data preparation and optimization..
What does Opik by Comet cost vs 3LC.AI?
Opik by Comet is completely free. 3LC.AI is a paid tool. Visit their websites for detailed pricing.