Langfuse vs LangSmith vs Braintrust: Agent Tracing and Evals Compared

Langfuse vs LangSmith vs Braintrust compared on tracing, evals, alerts, hosting, and pricing, with a worked cost example for 50,000 agent runs a month.
Running agents in production: observability, evaluation, gateways and cost control.

Langfuse vs LangSmith vs Braintrust compared on tracing, evals, alerts, hosting, and pricing, with a worked cost example for 50,000 agent runs a month.

A five-layer map of the 2026 AgentOps market, with 13 tools for instrumentation, observability, evals, gateways, and guardrails, plus pricing, licenses, and ownership changes.

We compared 12 AI agent observability tools on tracing, OpenTelemetry, evals, alerts, cost tracking, self-hosting, and pricing, with sourced prices as of October 2026 and a pick for every team type.