Evaluation Frameworks Quiz
Promptfoo, DeepEval, RAGAS, LangSmith and Phoenix compared by what each is good at, with working examples and a way to choose.
Evaluation Frameworks Quiz
Test your knowledge of LLM evaluation tools: Promptfoo, RAGAS, DeepEval, Azure AI Foundry evaluators, hallucination detection, and red-teaming.
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All AI Observability articles →Offline Evals: The Regression Suite for LLM Features
Build an evaluation dataset from real use, pick the cheapest grader that works, measure the noise floor, and turn the suite into a release gate.
Token Tracking and Cost Management
Monitor token usage and costs — per-request tracking, budgets, cost allocation across teams, and the optimization strategies that shrink the bill.
Phoenix: Open-Source LLM Observability
Arize's open-source, OTel-native LLM observability stack — traces, eval workflows, and prompt experiments, self-hosted with no data leaving your VPC.
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