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About TechAIInterview
TechAIInterview.com is a free resource for software engineers preparing for interviews that include AI and LLM topics. Every guide, question and quiz is free to use, with no account needed.
What's covered
- LLM Fundamentals — How large language models actually work, from tokens to fine-tuning.
- RAG & Vector Search — Retrieval-augmented generation end to end: chunking, embeddings, indexes, reranking and evaluation.
- AI System Design — Designing production LLM systems: latency, cost, reliability, guardrails and evaluation.
- Coding with AI APIs — Practical engineering with LLM APIs: prompting, tool use, streaming, agents and testing.
How to use it
- Follow the 4-week roadmap or jump to a topic.
- Read the guides, then answer the bank questions out loud before revealing answers.
- Check retention with quizzes and flashcards.
A note on accuracy
AI moves quickly. The material focuses on concepts that hold up across models and providers. When a detail depends on a specific product or API version, check the provider's current documentation.