# Full Telemetry Tools Comparison: Langfuse vs Helicone vs LangSmith vs Phoenix vs OTel

> Source: https://sukruyusufkaya.com/en/learn/token-ekonomisi/telemetry-araclari-langfuse-helicone-langsmith
> Updated: 2026-05-14T14:44:11.937Z
> Category: Token Ekonomisi & LLM Cost Optimization
> Module: Module 3: Cost Telemetry — Measure First, Then Optimize
**TLDR:** We compare the 5 main LLM observability tools side-by-side: feature sets, pricing, self-host options, KVKK compliance, integration ease. Decision matrix for 'which one should I use in my case'.