Engineers Say Context and Reliability Outweigh Models for Agents

Kim Isenberg posted about Michael Matloka, who joined PostHog as employee five after high school and later led its AI efforts. Matloka's reported lesson is that the model is rarely the hardest part of building agents. Context, tools, permissions, and reliability instead decide whether an agent works. Santiago Valdarrama replied that he agrees, stressing that everything around the model determines success. He added that context, permissions, integrations, and reliability are essential, calling harnesses crucial to the experience.