CODE IS HOW AI AGENTS THINK, NOT JUST OUTPUT

The research challenges the assumption that larger or better language models are the primary constraint on AI agent development. Instead, the paper emphasizes the critical role of the software "harness" that wraps around models to enable real-world functionality. Key components include memory systems for context retention, testing mechanisms for reliability, and permission boundaries for safety and control. These layers essentially teach models how to think and act as agents rather than simple text generators. Deepseek is already operationalizing this theory by establishing a dedicated "Harness" team in Beijing. The company's formula—model plus harness equals AI agent—reflects a broader industry shift in how teams approach autonomous systems. This perspective suggests future progress in AI agents will depend less on model scale and more on engineering the systems that govern their behavior and decision-making processes.