How Linear Builds an Evaluation Set From Real Agent Use

Unexpected user behavior becomes test data, alongside objective checks and model-judged criteria.

JaJacobInvitado · Linear
Canal
Peter Yang
Publicado
10 ago 2026
Vídeo
0:44
Lectura
1 min
Original
inglés
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RESUMEN

En 30 segundos

Linear engineer Jacob describes growing an AI-agent evaluation dataset through real use, combining deterministic checks with a language-model judge for more subjective output quality.

  1. 1Grow the test setUnexpected real-world use becomes new evaluation data over time.
  2. 2Check objective behaviorA request for an in-progress status should result in the corresponding status.
  3. 3Judge subjective outputThe team uses a language-model judge for questions such as whether the title and description capture the right information.

Conclusiones

  1. Add unexpected user interactions to an evaluation dataset as the product is used.
  2. Check deterministic requirements, such as setting a requested status, directly.
  3. Use a model judge for more subjective criteria, such as extracting a useful title.
TEXTO COMPLETO

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01

Evaluation from usage and feedback

Jacob explains how Linear combines test cases and model judgment.

Linear engineer Jacob says the team grows its AI-agent evaluation dataset through actual use. When a user behaves in an unexpected way, the team adds that case for future testing. Some checks are objective: if a user asks for an issue to be in progress, the agent should set that status. Other questions, such as whether a description is well organized or the right information became the title, are more subjective. For those, he describes using a language model as a judge against the expected information.

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