Philipp Schmid 1/5/2026

The importance of Agent Harness in 2026

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The article argues that as AI models become more similar in static benchmarks, the key differentiator is their reliability in complex, multi-step tasks. It introduces the concept of an 'Agent Harness'—the infrastructure or 'operating system' that wraps around an AI model to manage long-running agents, ensuring durability, context management, and steerability. It discusses the need for new benchmarks and positions agent harnesses as crucial for the next phase of AI development.

The importance of Agent Harness in 2026

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