
OpenRouter
Eden AI
Portkey
APIPark
Helicone AI
OpenAI
boldrouter
One library to standardize all LLM APIs

Langfuse
Arize Phoenix
LangSmith
OpenTelemetry-native observability for AI agents and LLM applications. Trace model calls, investigate failures, and monitor token usage, estimated cost, and latency.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | github.com | telemetry.dev |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using liteLLM and Telemetry.dev. For example, how are they different and which one is better?
When comparing liteLLM and Telemetry.dev, you can also consider the following products.


Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.
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Regrouping the best AI APIs for 10mn integration in your code
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Arize Phoenix: Open Source AI Development Platform
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Build production-grade & reliable AI apps with Portkey
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Build and deploy LLM applications with confidence
Compare LangSmith to liteLLM or Telemetry.dev: