Opik
coding
Open-source LLM evaluation, tracing, and observability by Comet.
Pricing
Free plan
Rating
—
Votes
0
Head-to-head comparison
Opik vs Langfuse
Compare Opik and Langfuse side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.
Langfuse
coding
Open-source LLM observability and evaluation
Pricing
Free plan
Rating
—
Votes
0
Feature comparison
Feature
Opik
Langfuse
Category
coding
coding
Pricing
Free plan
Free plan
Free plan
API access
Mobile app
Browser extension
Team collaboration
Custom training
Self-hosted option
Offline mode
Multi-language support
Opik pros and cons
Full platform is Apache-2.0 and free to self-host
Combines tracing and evaluation in one tool
LLM-as-a-judge and many automated metrics
Fast-growing, widely adopted open-source project
Crowded, competitive category
Self-hosting requires running infrastructure
Managed cloud limits (spans, seats) on lower tiers
Langfuse pros and cons
Open source with nearly all features MIT-licensed
Self-host the full product free, no seat or usage caps
Framework-agnostic (works with or without LangChain)
Strong tracing, prompt management, and evaluation
Self-hosting still requires running infrastructure
Enterprise compliance features are commercial
Cloud Pro tier jumps significantly in price
Which one should you choose?
Best overall signal
Opik
Selected using Toolglade popularity signals such as views and votes.
Best value signal
Opik
Selected using free-plan availability and engagement signals.
Best for
Opik
- LLM evaluation
- agent tracing
- prompt management
- production LLM monitoring
- Teams wanting open-source eval plus tracing
Langfuse
- LLM tracing
- Prompt management
- Evaluations
- Self-hosted observability
- Teams wanting open-source LLM observability
FAQ
Is Opik better than Langfuse?
It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.
Which tool has a free plan?
Opik and Langfuse offer a free plan based on current Toolglade data.