LLM EngineeringChoosing the LLM judge for evaluation pipelinesHow to pick the LLM that grades your LLM. The cost-quality tradeoffs, the calibration check, and why a weaker judge is sometimes the right call.EvaluationLLMMetrics+2 moreRead Article8 min
LLM EngineeringHallucination testing for RAG pipelinesHow to test a RAG pipeline for hallucinations systematically. Adversarial prompts, the out-of-scope set, and the metric that catches confabulation.RAGEvaluationLLM+2 moreRead Article8 min
LLM EngineeringFact-checking RAG answers: grounding with verificationHow to fact-check RAG answers with a second LLM pass that verifies every claim against the retrieved context. The prompt, the rejection rule, and the loop.RAGLLMEvaluation+2 moreRead Article8 min
LLM EngineeringQuery rewriting in RAG with LLMs: the rewrite loopHow LLM-powered query rewriting fixes vague user questions before retrieval. The prompt, the multi-query fan-out, and when rewriting hurts more than helps.RAGLLMPrompt Engineering+2 moreRead Article8 min
LLM EngineeringLLM-based content filtering for RAG pipelinesHow to filter irrelevant retrieved chunks with a cheap LLM call before the final answer. The prompt, the batch pattern, and the 40 percent noise reduction.RAGLLMData Processing+2 moreRead Article8 min
AI Engineering in PracticeAgent cost optimization from trace dataHow to use Langfuse trace data to find where your agent burns tokens. The 4 queries, the cost-per-user view, and the 50 percent savings patterns.ObservabilityAI AgentsProduction AI+2 moreRead Article9 min
LLM EngineeringLLM judges: enforcing reasoning with explicit rationalesWhy LLM judges without explicit reasoning drift, and how chain-of-thought rationales make their scores defensible. The prompt, the parser, the trust.EvaluationLLMAI Agents+2 moreRead Article9 min
LLM EngineeringLLM-as-a-judge: production evaluation framework for agentsHow to build an LLM-as-a-judge evaluation framework for agentic AI. The prompt, the rubric, the bias controls, and the loop that catches regressions.EvaluationLLMAI Agents+2 moreRead Article9 min
AI EngineeringCircuit breakers for LLM calls: stop cascading failuresHow circuit breakers prevent LLM outages from cascading through your agent. The 3 states, the failure window, and the 50-line implementation.AI AgentsLLMProduction AI+2 moreRead Article11 min