Keentune
Adaptive skill practice — find your level, get sharper.

AI & LLMs practice

Build with language models — RAG, prompting, evals
Work effectively with large language models — tokens and tokenization, context windows, embeddings and vector search, prompting (zero/few-shot, system prompts, chain-of-thought), sampling controls (temperature/top-p), RAG vs fine-tuning, evaluation (benchmarks, LLM-as-judge), hallucination and prompt injection, and tool/function calling. Durable concepts for building with LLMs; specific model facts are noted as version-sensitive. Part of the Developer track.
• Meets you at your level — never too easy, never too hard.
• Adapts every question to how you’re doing.
• Tracks your level over time. Skill practice, not a test.
New here? Read the AI & LLMs guide
A free 17-minute primer — the mental model, the mistakes beginners make, and what to practise first.
Curriculum
133 concepts across 19 chapters, from foundations through advanced practice — each one a concept the adaptive question bank can teach and test.
A. What the model is actually doing when it answers
7
B. Tokens, tokenization and the context window
8
C. Sampling controls and determinism
6
D. The Messages API surface
8
E. Streaming, batches and long-running requests
8
F. Prompt caching
6
G. Prompt engineering
8
H. Output shape: formatting, prefill and structure
6
I. Tool use and function calling
8
J. Agents and the agent loop
8
K. Context and memory management
6
L. Retrieval-augmented generation
8
M. Embeddings, vector search and reranking
6
N. Model Context Protocol
7
O. Evaluation
8
P. Prompt injection, jailbreaks and output safety
8
Q. Fine-tuning versus prompting
7
R. Cost and latency engineering
5
S. Reliability and production hygiene
5
View the full curriculum →
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