Level 9: Advanced Patterns — Briefing
Production patterns: Guardrails protect your app from harmful inputs and outputs. Model Routing optimizes costs by choosing the right model size for each task. Multi-Output compares quality across multiple models. The finale for production-ready AI.
Skill Tree
Section titled “Skill Tree”
What You’ll Learn
Section titled “What You’ll Learn”- Guardrails — Input and output checks that prevent prompt injection, PII leaks, and toxic outputs
- Model Router — Automatically choose the right model for each task: cheap for simple tasks, powerful for complex ones
- Comparing Outputs — Query multiple models in parallel and systematically compare results
- Research Workflow — An end-to-end pipeline that combines all concepts from 9 levels
Why This Matters
Section titled “Why This Matters”You’ve spent 8 levels learning to build AI systems — generating text, using tools, orchestrating workflows. But a prototype is not a production app. What happens when a user tells your LLM “Ignore all instructions”? What if you use the most expensive model for every simple question? What if you don’t know which model gives the best answer?
The concrete problem: You want an AI system that is secure, cost-efficient, and quality-tested. Guardrails protect, Model Routing optimizes, Comparing Outputs proves quality. In the Boss Fight you’ll build a system that combines everything.
Prerequisites
Section titled “Prerequisites”- Level 1: AI SDK Basics —
generateText,streamText,Output.object(Challenge 1.3-1.6) - Level 3: Agents & MCP — Tool Calling, Multi-Step Agents (Challenge 3.1-3.3)
- Level 5: Context Engineering — XML-structured prompts, Rules Section (Challenge 5.1-5.3)
- Level 8: Workflows — Sequential pipelines, Custom Loops, Break Conditions (Challenge 8.1-8.4)
- Recommended: Level 2 (Token costs), Level 6 (Evals), Level 7 (Streaming)
Project directory: Create a new folder
level-9-advanced/and work there.
Skip note: You’re already implementing guardrails, automatically routing between models, and using LLM-as-a-Judge for quality comparisons? Jump straight to the Boss Fight and build a production-ready AI system.
Challenges
Section titled “Challenges”Boss Fight
Section titled “Boss Fight”Build a production-ready AI system — the ultimate project that combines all 9 levels. Guardrails protect input and output. A Model Router selects the optimal model. Comparing Outputs ensures quality. A multi-step research pipeline orchestrates everything. Tools, streaming, cost tracking, and eval coverage included.