LLM Eval System Design Playbook
Design a production eval program for your LLM product feature — measurable quality dimensions, a contamination-guarded golden set, calibrated graders, and CI regression gates with drift monitoring — so quality regressions never reach users on vibes. (Evals the feature itself; for benchmarking coding agents on repo tasks, see the Coding Agent Eval Harness Builder Playbook.)
A 4-step agentic workflow pack for coding built to run with ChatGPT, Claude, and Gemini. Open the Markdown files, fill the variables, and paste into your model. Most buyers get a reviewable result in about 15 minutes.
- Turn a vague feature description into measurable quality dimensions with severity-rated failure modes and honest acceptance thresholds
- Design a golden set with segment × difficulty coverage and five contamination guards (sealed holdout, canary items, paraphrase rotation)
- Assign the cheapest trustworthy grader per dimension — programmatic, rubric with 1–5 behavioral anchors, or bias-controlled LLM-judge
- Calibrate every grader against human labels with explicit agreement targets before it is allowed to block a ship
- Wire evals into CI with absolute floors, relative-drop rules, a flake budget, and zero-tolerance rules for critical failure modes
- Catch what golden sets miss with a production drift monitor: sampled scoring, cheap proxies, alert runbooks, and a weekly review ritual
Prompt Customization Service — optional help adapting variables and output to your brand voice. Choose your tier at checkout (not tied to this prompt's price).
This pack is $10 on its own. Buying every pack separately costs $935. The Lifetime Bundle is $149 one-time — you save $786 (84% off) and unlock every future pack free.
Get the Lifetime Bundle — $149Paste the license key from your receipt. It must match this prompt pack.
What ships with your purchase
Prompt files
Plain Markdown files with `{{variables}}` you fill in, ready to paste into ChatGPT, Claude, or Gemini. No setup, no tooling required.
Usage guide
Variable reference, model compatibility, examples, and customization tips so you can adapt the pack to your brand voice.
Lifetime updates
When we improve the pack, you get the new version automatically. Email support included with every purchase.
Models tested: ChatGPT, Claude, Gemini.
The workflow inside this pack
4 composable prompts you run in order — each one picks up where the last left off.
- Step 1
Eval Requirements Mapper
Describe your LLM feature, any bad outputs you have seen, and what failures cost you — get 4–7 quality dimensions, each classified by how it can be graded.
- Step 2 · optional
Golden Set Designer
Paste the requirements map and get a sized coverage matrix — segments × difficulty tiers — where every known failure mode is targeted by an adversarial item.
- Step 3 · optional
Grader Architect
Feed in your dimensions and golden-set blueprint and get one primary grader per dimension, chosen by the cheapest-trustworthy rule with the rationale stated.
- Step 4 · optional
Regression Gate & Drift Monitor Designer
Paste your grader specs and CI context and get gate trigger points, per-dimension absolute floors plus relative-drop rules, and zero-tolerance rules for critical failure modes.
Perpetual (lifetime) use license
Your one-time purchase includes an ongoing right to use this prompt pack with the AI tools and models you control for your own and your clients' work — not for resale or public redistribution of the files as a product.
We keep the copyright
The prompt files, guides, examples, and bundled assets stay our copyrighted works (or our licensors'). Payment grants the limited license in our Terms only — it does not transfer ownership.
Need help adapting this prompt to your team? Add Prompt Customization Service at checkout.