What is prompt injection? The 3 attack surfaces to fix
Prompt injection hijacks your LLM via user input, retrieved docs, and tool results. Three attack surfaces, and the defenses that actually work in production.
LLMTest Blog7 min read
retrieval augmented generation
5 stories
LLM cost per user in 2026: $0.15–$0.73 across three workloads
Per-user LLM cost at 1,000 daily users in 2026: token math across chat, extraction, and RAG at two model tiers, with break-even math for solo devs.
LLMTest Blog5 min readHow to cache LLM API calls in Node.js 2026: Redis and break-even math
Redis exact-match caching cuts LLM API spend at scale. Working Node.js middleware, 30-minute TTL trade-off, and when semantic search is worth the overhead.
LLMTest Blog5 min readHow to build a RAG API in Node.js 2026: pgvector and cited answers
Build a production RAG API in Node.js using pgvector: text ingestion, chunked embeddings, vector search, and source-cited answers in under 80 lines.
LLMTest Blog5 min readLLM hallucinations explained: causes, types, production fixes
Why LLMs hallucinate, the three error types, prompting patterns that reduce them, and the one production eval that catches failures before your users see them.
LLMTest Blog6 min read
Showing 5 of 5 stories
You're all caught up.
AiByts Weekly Brief
Get the top AI news and tools straight to your inbox every week.
Weekly · AI news from LLMTest Blog
Join 15,000+ AI enthusiasts