Langfuse
llm-observability
Open-source LLM observability and evaluation
Pricing
Free plan
Rating
—
Votes
0
Head-to-head comparison
Langfuse vs Braintrust
Compare Langfuse and Braintrust side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.
Braintrust
llm-observability
Eval-first evaluation and observability platform for AI applications.
Pricing
Free plan
Rating
—
Votes
0
Feature comparison
Feature
Langfuse
Braintrust
Category
llm-observability
llm-observability
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
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
Braintrust pros and cons
Deep, eval-first feature set with scorers, experiments, and statistical rigor
Strong CI/CD integration to catch regressions before deploy
Usage-based pricing with unlimited users, so no per-seat penalty
Powerful playground for prompt iteration and comparison
Not open source; source-available and hosted model
Self-hosting locked to the Enterprise tier and a license key
Big price jump from free to $249 per month
Which one should you choose?
Best overall signal
Langfuse
Selected using Toolglade popularity signals such as views and votes.
Best value signal
Langfuse
Selected using free-plan availability and engagement signals.
Best for
Langfuse
- LLM tracing
- Prompt management
- Evaluations
- Self-hosted observability
- Teams wanting open-source LLM observability
Braintrust
- systematic LLM evaluation
- CI/CD quality gates
- prompt comparison and iteration
- production tracing to eval loops
- Teams making evaluation a first-class part of development
FAQ
Is Langfuse better than Braintrust?
It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.
Which tool has a free plan?
Langfuse and Braintrust offer a free plan based on current Toolglade data.