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GStack to Launch Full LLM Evaluation System ===========================================
GStack to Launch Full LLM Evaluation System ===========================================  ### Garry Tan
@garrytan
Full evals system coming to GStack shortly.
LLM evals are the only way you can make fully agentic systems that are repeatably better as you improve the workflow, context engineering and prompts.
Mar 15, 2026, 4:53 AM View on X
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12.4K Views  Garry Tan @garrytan
One Sentence Summary
Garry Tan announces an upcoming evaluation system for GStack, emphasizing that LLM evals are critical for building reliable agentic AI.
Summary
Garry Tan, CEO of Y Combinator, announces that GStack will soon include a comprehensive evaluation system. He highlights the strategic importance of LLM evaluations as the foundational method for developing agentic systems that can be iteratively improved through better workflows, context engineering, and prompt optimization. This underscores the industry shift towards rigorous testing and observability in AI development.
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GStack to Launch Full LLM Evaluation System | BestBlogs.dev ===============