Vellum
coding
Build, evaluate, and deploy LLM apps and agents with confidence.
Pricing
Free plan
Rating
—
Votes
0
Head-to-head comparison
Vellum vs Langfuse
Compare Vellum 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
Vellum
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
Vellum pros and cons
Combines prompt, workflow, evaluation, and deployment in one platform
Visual workflow builder lowers the barrier for cross-functional collaborators
Solid evaluation and testing tooling for pre-production quality gates
Multi-provider model support avoids lock-in
Pricing is opaque and sales-led, making budgeting hard
Not open source, and self-hosting is locked to Enterprise
Free tier is quite limited in credits, documents, and seats
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
Vellum
Selected using Toolglade popularity signals such as views and votes.
Best value signal
Vellum
Selected using free-plan availability and engagement signals.
Best for
Vellum
- collaborative agent building
- prompt evaluation and testing
- deploying LLM features
- cross-functional AI teams
- Teams wanting an all-in-one build-evaluate-deploy platform
Langfuse
- LLM tracing
- Prompt management
- Evaluations
- Self-hosted observability
- Teams wanting open-source LLM observability
FAQ
Is Vellum 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?
Vellum and Langfuse offer a free plan based on current Toolglade data.