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BuiltLive demoAI learning game

Langfuse: trace detective

Six user complaints, six traces. Find the step that caused each one — and learn how to read an AI app’s traces.

The problem

When an AI app is slow, wrong or expensive, the answer is in its traces. But traces are a wall of numbers until you know what to look for.

How it works

  1. 01Read the complaint
  2. 02Open the steps
  3. 03Blame one
  4. 04See why
  5. 05Learn the habit

What was hard

  • Each case teaches one habit: read the timeline, check the search, follow the tokens, check the prompt version, look for errors, read the scores.
  • “Close” answers — the step where a problem shows, not where it starts — cost no life, and explain the difference.

The result

A few minutes of play that make a real Langfuse trace readable.

Built with

ReactLangfuse concepts