Compare › Langfuse
RunVouch vs Langfuse
Langfuse is excellent open-source LLM observability: traces, evals, prompt management. RunVouch is not a tracing tool; it's the watchdog that tells you a scheduled agent is broken or expensive, without instrumenting your code.
| Langfuse | RunVouch | |
|---|---|---|
| Traces, spans, prompt versions, evals | yes | no |
| Requires SDK in your code | yes | no, wrap the command or install the plugin |
| Missed-run / dead man's switch | no | yes |
| Evidence the task was done | no | yes |
| Retry-storm alert | you can find it in traces | automatic |
| Hard cost cap + pause | cost threshold alerts since v4, no cap or pause | yes |
| Pricing | free self-host; cloud per unit | free 3 agents; $19 / $99 |
When to use which
They're complementary. Langfuse answers "why did this prompt produce that"; RunVouch answers "did last night's agent run, finish, prove it, and stay under budget". If you only want the second, you don't need the first.
Other comparisons
vs Dead Man's Snitch: Heartbeat vs heartbeat plus outcome. vs Sentry Crons: Exceptions vs silent failures. vs Better Stack: One vendor for uptime vs one job done well. Not sure which category you need at all? Start at observability, a heartbeat, or a watchdog, or see all comparisons.