Practical AI articles from OpenStair Engineering.
November 26, 2025 · 17 min read
A production guide to evaluating AI and LLM features: multi-tiered evaluation funnels, the RAG triad, calibrating LLM judges, and offline CI to online monitoring.
November 25, 2025 · 13 min read
A production guide to controlling LLM costs through token budgeting, prompt caching, semantic cache tiers, model routing cascades, and batch processing.
November 24, 2025 · 13 min read
A practical guide to building resilient production AI systems using multi-layer validation, Zod schemas, circuit breakers, multi-tier fallbacks, and telemetry.
November 23, 2025 · 15 min read
A production guide to vector embeddings and vector databases: mathematical foundations, ANN algorithms (HNSW, IVF, PQ), pgvector vs dedicated engines, and metadata filtering.
November 22, 2025 · 16 min read
A production engineering guide to Retrieval-Augmented Generation (RAG): offline ingestion, hybrid search with RRF, cross-encoder reranking, and evaluation.
November 21, 2025 · 13 min read
Architecting production LLM gateways: streaming protocols, SSE cancellation, multi-provider fallbacks, semantic caching, and OpenTelemetry GenAI observability.
