

AI Harness Explained — What Happens When It Becomes Open Source? (拆解 AI Harness — 當它走向開源,會帶來甚麼改變?)
When we talk about AI, most of the attention goes to the model. But a powerful model alone does not make an AI system useful.
Behind many capable AI products is another important layer: the AI harness—the surrounding system that helps a model manage context, use tools, interact with systems and complete complex tasks.
With OpenAI opening up the Codex harness and DeepSeek releasing its open-source DeepSeek Harness in August 2026, this important layer beyond the model is becoming increasingly accessible. What could this change for businesses?
In this online sharing session, Emprise Chan, AI Strategy Consultant at Ultermind, will explore four key questions:
What is an AI harness, and how is it different from a model or agent?
Why can the same model perform very differently depending on the harness around it?
What changes when capable AI harnesses become open source?
How could this reshape the buy vs. build decision for businesses?
By the end of the session, you should have a clearer understanding of the layer beyond the AI model—and why the rise of open-source harnesses could influence how businesses design, buy and build AI systems.
This session is designed for business owners, managers and decision-makers who want to understand where enterprise AI is heading, without needing a deep technical background.
📅 22 September 2026 (Tuesday)
💻 Online
🗣️ Cantonese