Build Trustworthy LLM Apps Powered by Agentic Evals | Meta

[2026 - DAY 3 - LIGHTNING TALK] Agentic AI has certainly secured mindspace of industry. As more & more people continue to play with LLMs, they begin developing an intuition aka vibes around whether LLM is performing the task at hand well or not. While usecases like math problem, classification are easier to verify; generative content creation etc are not. Adding agents to the mix makes things lot more complex. This talk will highlight the particular challenges one may face as they continue their journey towards productionizing their Agentic application: outputs are non deterministic, ground truth is hard to find, and what used to work before no longer does. Yet """"LGTM"""" isn't a deployment strategy. While typical LLM chatbot can be seen as a more sophisticated Google search, we're beginning to expect more from Agents: Don't just give an answer but actually perform the task. Security, bias, privacy etc suddenly become non-negotiable. Only after we handle these complexities, we can unblock real usecases in healthcare, finance, legal etc. This talk tackles why agent evaluation is fundamentally harder than traditional ML testing: multi-step reasoning chains, tool use side effects & more. How to build evaluation datasets that actually reflect production scenarios, not just cherry-picked examples. We'll cover automated evaluation pipelines using LLM-as-judge patterns, and when you can not avoid human in the loop. The session addresses detecting regressions before users do: setting up continuous evaluation that catches model degradation. Tricky cases when agent aces public evals but fails in production, and how to build evaluations that predict real-world performance. SPEAKER: Rushabh Mehta - Tech Lead, Meta 👉 Sign up for our "No BS" Newsletter to get the latest technical data & AI content: https://aicouncil.com/newsletter ABOUT AI COUNCIL: AI Council brings together the brightest minds in data to share industry knowledge, technical architectures and best practices in building cutting edge data & AI systems and tools. FIND US: Website: https://aicouncil.com/ LinkedIn: https://www.linkedin.com/company/aicouncilconf/ X: https://x.com/aicouncilconf