PibyThree Pi-LangEval - Observe, Test, Measure, Evaluate & Deliver

π-LangEval is an enterprise LLM & SLM evaluation and observability platform purpose-built for teams deploying AI agents, RAG systems, and SLM/LLM-powered applications at scale. It captures end-to-end traces across every execution span, from user input through retrieval, model calls, and tool use and applies automated LLM-as-a-Judge scoring using built-in evaluators such as Context Precision, Answer Relevance, Faithfulness, BLEU, and ROUGE. With real-time cost tracking at the token, model, and user level, teams gain full visibility into spend across 40+ providers including OpenAI, Claude, AWS Bedrock, and Google Gemini. Native multi-tenancy, role-based access control, immutable audit logs, and end-to-end encrypted credential storage meet enterprise compliance and security requirements out of the box. π-LangEval bridges the gap between demo and production, making prompt engineering a measurable discipline and AI deployment a repeatable, auditable process.