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TL;DR Shipping reliable LLM applications requires systematic evaluation beyond manual testing. Maxim AI provides end-to-end evaluation with simulation, node-level metrics, and production feedback loops. Langfuse offers open-source evaluation with prompt management. LangSmith delivers LangChain-native testing with datasets. TruLens specializes in feedback-driven improvement. Deepchecks brings MLOps validation to LLM workflows.

TL;DR AI evaluation has evolved from a nice-to-have into mission-critical infrastructure as LLM applications move to production. This guide examines five leading evaluation platforms: Maxim AI delivers end-to-end lifecycle management with agent simulation, comprehensive evaluation frameworks, and production observability designed for cross-functional teams. Braintrust provides evaluation-first development with GitHub

TL;DR Choosing the right LLM evaluation platform is critical for shipping reliable AI agents in 2026. This comprehensive comparison examines the top 5 platforms: Maxim AI leads with end-to-end simulation, evaluation, and observability; Braintrust offers strong experiment tracking; LangSmith provides deep LangChain integration; Arize excels in ML monitoring; and