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LLM Evaluation & Testing

Evaluation frameworks, automated testing, multi-judge systems, and eval-driven development.

By AI-DE Engineering Team

Evaluation is the quality-assurance layer for every LLM application. Without it, prompt and model changes degrade silently — eval-driven development is what catches regressions before users do.

Phases
3
Modules
5
Time
~12h video + labs
What you'll do

What you'll be able to do.

  • Build comprehensive LLM evaluation frameworks
  • Implement automated testing pipelines for LLM applications
  • Design multi-judge evaluation systems for quality assurance
  • Practice eval-driven development for iterative LLM improvement

Phase roadmap.

This works in your prompt sandbox… but fails in production.

Without the full system, you risk:

  • Models that degrade silently when you swap prompts or upgrade versions
  • Edge cases that pass review but break user trust in the wild
  • Quality metrics that drift unnoticed for weeks before someone notices
  • Cost from running expensive judge models when cheaper ones would do
What you'll ship

What you'll build.

  • Evaluation dataset with edge cases and golden answers
  • Multi-judge evaluation pipeline with cascade routing
  • Eval-driven prompt iteration loop
  • CI/CD regression gate that blocks bad model changes
Definition

What is LLM Evaluation & Testing?

LLM evaluation is the practice of systematically measuring the quality, accuracy, and reliability of large language model outputs. It encompasses building evaluation datasets, implementing automated testing pipelines, designing multi-judge systems, and practicing eval-driven development. Companies like Anthropic, OpenAI, and Google DeepMind invest heavily in evaluation to ensure model quality.

Production context

Why this matters in production.

Without evaluation, LLM applications degrade silently. At Anthropic, evaluation pipelines run thousands of test cases before any model change reaches production. Production LLM evaluation requires automated testing in CI/CD, regression detection, and multi-judge systems that catch quality issues human review would miss.

Use cases

Common use cases.

  • Building evaluation datasets that test edge cases and failure modes
  • Implementing automated LLM testing in CI/CD pipelines
  • Designing multi-judge evaluation with LLM-as-judge and human review
  • Practicing eval-driven development for iterative prompt and model improvement
  • Measuring RAG retrieval quality with precision, recall, and relevance metrics
  • Detecting regressions when updating prompts, models, or retrieval systems
Compare

LLM Evaluation vs alternatives.

LLM EvaluationvsManual Testing

Automated LLM evaluation scales to thousands of test cases. Manual testing catches issues automation misses. Production teams use both — automated testing in CI/CD with periodic human evaluation.

LLM EvaluationvsTraditional ML Metrics

LLM evaluation uses metrics like faithfulness, relevance, and coherence. Traditional ML uses accuracy, F1, and AUC. LLM metrics are often subjective and require judge models or human evaluation.

LLM EvaluationvsA/B Testing

Evaluation measures output quality offline. A/B testing measures user impact online. Evaluation happens before deployment; A/B testing validates after. Both are essential for production LLM systems.

Why this matters

Why this skill matters.

LLM evaluation is what separates staff AI infra engineers from prompt tweakers. This skill proves you can ship LLM systems that survive production — the quality bar Anthropic and OpenAI hire for.

FAQ

Common questions about LLM.

LLM evaluation systematically measures output quality using automated metrics, judge models, and human review. It covers accuracy, faithfulness, relevance, and safety across test datasets.

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