Arize Phoenix
coding
Open-source LLM and agent observability built on OpenTelemetry.
Pricing
Free plan
Rating
—
Votes
0
Head-to-head comparison
Arize Phoenix vs Helicone
Compare Arize Phoenix and Helicone side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.
Helicone
coding
Open-source LLM observability and AI gateway in one line of code.
Pricing
Free plan
Rating
—
Votes
0
Feature comparison
Feature
Arize Phoenix
Helicone
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
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
Helicone pros and cons
Extremely easy integration via a one-line base-URL swap
Open source under Apache 2.0 and free to self-host
Tiny Docker image that runs almost anywhere
Gateway features like caching, failover, and rate limiting cut cost and improve reliability
Product is in maintenance mode after the Mintlify acquisition, with no roadmap
Long-term hosted-service viability is uncertain and migration may be needed
Usage-based overages mean the Pro price is a floor, not a cap
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
Helicone
- quick LLM request logging
- self-hosted observability
- gateway caching and failover
- cost and usage monitoring
- Teams wanting simple, cheap LLM logging
FAQ
Is Arize Phoenix better than Helicone?
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 Helicone offer a free plan based on current Toolglade data.
Where can I find alternatives?
View Arize Phoenix alternatives or view Helicone alternatives.