AI Engineering Glossary

Every term you need to know, defined precisely.

Content

Token · Context window · Embedding · Vector search · RAG · Chunking · Reranking · Function calling · Tool calling · Agent · ReAct · MCP · Guardrails · Prompt injection · Faithfulness · Hallucination · Structured output · Streaming · TTFT · Hybrid search · BM25 · HNSW · Cross-encoder · LLM-as-judge · Eval-driven development · Human-in-the-loop · Policy layer · Circuit breaker · Semantic cache · Model routing · Fallback chain