Tag Self-Host

Observability

Arize Phoenix vs Langfuse vs Helicone: Which to Self-Host in 2026?

Navy diagram of three self-host shapes for Phoenix single box, Langfuse stacked services, and Helicone gateway

Compare Arize Phoenix vs Langfuse vs Helicone for self-host in 2026: ELv2 vs MIT vs Apache-2.0, Docker footprints, OpenInference vs SDK vs proxy, cloud prices, and who should pick which.

AgentStack Observability Desk
October 13, 2026

Observability

8 Best Open Source LLM Observability Tools You Can Self-Host in 2026

Navy diagram of three self-host server racks sending amber traces into an open observability ring

Compare 8 open source LLM observability tools you can self-host in 2026, including Langfuse, Opik, Phoenix, Helicone, LangWatch, Agenta, Laminar, and OpenLIT, on license, OTel, Docker, and cost.

AgentStack Observability Desk
October 13, 2026

Tag Self-Host

Arize Phoenix vs Langfuse vs Helicone: Which to Self-Host in 2026?

8 Best Open Source LLM Observability Tools You Can Self-Host in 2026

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