| name | write-eval-suite |
| description | Use when building a test suite to evaluate LLM model performance, prompt quality, or AI system behavior |
| source | OpenAI Evals framework (github.com/openai/evals); HELM benchmark — Liang et al., Stanford CRFM (2022); BIG-bench (Google Brain, 2022) |
| tags | ["llm","evals","benchmarking","ai-quality","testing","helm","openai-evals"] |
| verified | true |
Write Eval Suite
Build a structured evaluation suite that measures LLM or AI system performance with reproducible, comparable metrics.
Why This Is Best Practice
Adopted by: OpenAI (public Evals framework), Stanford (HELM — Holistic Evaluation of Language Models), EleutherAI (LM Evaluation Harness)
Impact: HELM evaluates 30+ models across 42 scenarios and 7 metric categories; OpenAI uses community evals to discover model regressions before release — systematic evals caught GPT-4 Turbo regressions not visible to internal red-teaming.
Why best: Evals are to AI systems what unit tests are to software: they make quality measurable, regressions detectable, and improvements verifiable. Without them, "the model got better" is a belief, not a fact. A good eval suite is the single most durable investment in a production AI system.
Steps