Build Fast with AI
RoadmapResourcesCareer PathsDocumentation
Get Started
Learning Path
OverviewLevel 0Environment & FoundationsLevel 1LLM Fundamentals & APIsLevel 2Building Simple GenAI ApplicationsLevel 3RAG Systems & Intelligent AgentsLevel 4Production Systems & DeploymentLevel 5Advanced GenAI TechniquesLevel 6Choose Your Specialization Path
Resources
ResourcesCareer PathsDocumentation
Your Progress

Level 2 in progress

HomeRoadmapLevel 1
1

LLM Fundamentals & APIs

Understand how LLMs work and start building with GPT-5.5, Claude Opus 4.7, and Promptfoo-based eval workflows.

⏱️
Duration
1-2 weeks
📊
Difficulty
Beginner
✓
Checkpoints
4
⚡
Est. Hours
15h

Learning Outcomes

  • Understand transformer architecture basics
  • Master prompt engineering patterns
  • Build scripts that call LLM APIs
  • Compare frontier model behavior across vendors
  • Manage API costs and tokens effectively
  • Handle errors gracefully

Topics to Master

•How LLMs work internally
•Tokenization and context windows
•Prompt engineering techniques
•Temperature and sampling parameters
•Using GPT-5.5 and GPT-5.5 Pro
•Using Claude Opus 4.7
•Promptfoo eval and red-team loops
•Cost optimization and rate limits

Featured Projects

GPT-5.4 Mini/Nano Cookbook

Complete

Learn the latest OpenAI mini and nano model setup, structured outputs, and fast prompt patterns.

BeginnerLevel 0
#openai#gpt-5.4-mini#gpt-5.4-nano

GPT-5.5 Cookbook

Complete

Work with GPT-5.5 and GPT-5.5 Pro for long-context reasoning, coding, and agentic workflows.

IntermediateLevel 1
#openai#gpt-5.5#pro

Claude Opus 4.7 Cookbook

Complete

Use adaptive thinking, effort controls, and long-horizon coding patterns with Claude Opus 4.7.

IntermediateLevel 1
#anthropic#claude-opus-4.7#adaptive-thinking

Promptfoo GPT-5.4 Evaluation Cookbook

Complete

Compare frontier models with cost, latency, and red-team checks using Promptfoo.

IntermediateLevel 1
#promptfoo#evals#red-team

Prompt Engineering Fundamentals

Complete

Learn prompt engineering techniques and create effective prompts for different tasks.

BeginnerLevel 1
#prompting#llm#techniques

Build an LLM CLI Application

Complete

Create a command-line application that interacts with ChatGPT or Claude APIs.

BeginnerLevel 1
#api#cli#llm
View all 7 projects

Checkpoints & Milestones

This level includes 4 structured checkpoints with hands-on tasks, validation criteria, and portfolio pieces. Complete these to solidify your understanding.

View Checkpoints →
← Previous
Level 0: Environment & Foundations
Next →
Level 2: Building Simple GenAI Applications