// USE CASES
The jobs teams hire RunAgain for.
Task-level guides, each grounded in the same loop: trace it, replay it, score it, improve it. For the capability-level view, see solutions.
LLM cost trackingKnow what every run costs, and who spent it.read →Reduce LLM costsCut the spend without cutting the quality.read →Time-travel debuggingGo back to the run that broke, and step through it.read →Regression testing in CIThe prompt change that breaks checkout never merges.read →Prompt A/B testingStop eyeballing prompts. Start measuring them.read →Hallucination detectionCatch the confident lie before your customer does.read →Conversation tracingRead the whole conversation, not twenty separate runs.read →LLM-judge calibrationTrust the judge because you measured it, not because it sounds right.read →Tool-call failure analysisYour agent is only as good as its worst tool call.read →Structured output validationThe JSON parsed. That does not mean it is right.read →Tracing coding agentsYour coding agents work all day. See what they actually did.read →Agent & LLM alertingWhen an agent misbehaves, your phone should know first.read →