Best LLM Evaluation Tools for Overmind

Langfuse is a free and open-source LLM engineering platform that helps teams to debug, analyze, and iterate their LLM Applications. Observability: Incorporate Langfuse into your app to start ingesting traces. Langfuse UI : inspect and debug complex logs, user sessions and user sessions Langfuse Prompts: Manage versions, deploy prompts and manage prompts within Langfuse Analytics: Track metrics such as cost, latency and quality (LLM) to gain insights through dashboards & data exports Evals: Calculate and collect scores for your LLM completions Experiments: Track app behavior and test it before deploying new versions Why Langfuse? - Open source - Models and frameworks are agnostic - Built for production - Incrementally adaptable - Start with a single LLM or integration call, then expand to the full tracing for complex chains/agents - Use GET to create downstream use cases and export the data

Braintrust is a powerful AI observability and evaluation platform built to help organizations monitor, analyze, and improve the performance of their AI systems in real-world environments. It captures detailed production traces, giving teams visibility into prompts, outputs, tool calls, and system behavior in real time. The platform enables users to evaluate AI performance using automated scoring, human feedback, or custom metrics to ensure consistent quality. Braintrust helps detect issues such as hallucinations, latency spikes, and regressions before they affect end users. It also allows teams to compare prompts and models side by side, making it easier to refine and optimize AI workflows. With scalable infrastructure, Braintrust can handle large volumes of AI trace data efficiently. The platform integrates seamlessly with existing development tools and supports multiple programming languages. It includes features like automated alerts and performance monitoring to proactively identify problems. Braintrust also supports building evaluation datasets directly from production data, improving testing accuracy. Its flexible and framework-agnostic design ensures compatibility with any AI stack. Overall, Braintrust empowers teams to continuously improve AI systems while maintaining reliability and performance at scale.

Galileo is an AI observability and eval engineering platform designed to help teams evaluate, monitor, guardrail, and improve AI agents and applications. The platform connects the offline testing process with production governance, turning evals into guardrails that can control agent actions, tool access, escalation paths, and safety behavior. Galileo helps teams capture ground truth from synthetic data, development data, live production data, and subject matter expert annotations. Its evaluation capabilities include RAG evals, agent evals, safety evals, security evals, and custom evals that can be tuned to specific environments. Galileo’s Luna models distill optimized LLM-as-judge evaluators into compact models that run at lower cost and latency for production-scale monitoring. The insights engine analyzes traces, prompts, functions, context, datasets, models, and agent behavior to identify failure modes and recommend fixes. Teams can use Galileo to detect hallucinations, tool-selection failures, drift, bias, unsafe outputs, and other reliability issues before they harm production experiences. Deployment options include SaaS, virtual private cloud, and on-premises environments. By combining observability, eval engineering, production guardrails, ground-truth datasets, Luna models, insights, and enterprise deployment options, Galileo helps organizations build more reliable AI systems.