Arize Phoenix
llm-observability
Open-source LLM and agent observability built on OpenTelemetry.
Pricing
Free plan
Rating
—
Votes
0
Head-to-head comparison
Arize Phoenix vs Langtrace
Compare Arize Phoenix and Langtrace side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.
Langtrace
llm-observability
Open-source, OpenTelemetry-based observability for LLM applications
Pricing
Free plan
Rating
—
Votes
0
Feature comparison
Feature
Arize Phoenix
Langtrace
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
Arize Phoenix pros and cons
Free and source-available, self-hosts in one command
Built on open OpenTelemetry standards
Strong tracing and evaluation for agents and RAG
Works locally, good for private/dev-time debugging
Production-scale features require paid Arize AX
Self-hosting means you run the infrastructure
Dynatrace acquisition may change roadmap/governance
Langtrace pros and cons
Fully open source and self-hostable
Built on the OpenTelemetry standard
Traces export to any observability stack
Supports Python and TypeScript
Smaller ecosystem than larger competitors
Fewer turnkey enterprise features
Evaluations can require manual effort
Which one should you choose?
Best overall signal
Arize Phoenix
Selected using Toolglade popularity signals such as views and votes.
Best value signal
Arize Phoenix
Selected using free-plan availability and engagement signals.
Best for
Arize Phoenix
- LLM and agent tracing
- RAG debugging
- eval-driven development
- hallucination detection
- Engineers debugging LLM and agent apps
Langtrace
- LLM app tracing
- Cost and latency monitoring
- Vendor-neutral observability
- LLM app developers
- RAG engineers
FAQ
Is Arize Phoenix better than Langtrace?
It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.
Which tool has a free plan?
Arize Phoenix and Langtrace offer a free plan based on current Toolglade data.
Where can I find alternatives?
View Arize Phoenix alternatives or view Langtrace alternatives.