
Compare / alternatives
Plain comparisons with the other tools teams look at, including the cases where they are the better pick.
6 comparisons
Most teams compare tools on four things: how traces are collected, what cost visibility they get, whether evaluation is built in, and where data is hosted. Each page below answers those honestly.
Langfuse is an MIT-licensed LLM engineering platform with a hosted cloud (US, EU, Japan and HIPAA regions) and a self-hosted edition. Uncoil is a managed agent observability platform with alerts and evaluation built in.
LangSmith is the observability and evaluation product from the LangChain team, hosted in the US, EU or APAC. Uncoil is framework-neutral and built around OpenTelemetry.
Helicone is an open-source LLM observability platform and AI gateway, often set up by routing traffic through its proxy. Uncoil watches whole agent runs from instrumentation, with no proxy in your request path.
Phoenix is Arize's free, self-hosted tracing and evaluation tool (Elastic License 2.0); Arize AX is its managed product. Uncoil is a managed product built specifically around agent runs.
Braintrust is centered on evaluation and experiments, with logging and tracing alongside. Uncoil starts from production traces and adds evaluation on top.
Datadog adds LLM monitoring to a general infrastructure platform. Uncoil is purpose-built for agents.
