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Brian Roberg's Blog

Tagged “security”

  1. What Is an AI Agent?

    If you want to understand important AI concepts, you'll want to get familiar with AI "agents." In the fast-moving world of AI, this particular term has had quite the ride. At this time last year, "agent" was mostly a buzzword: lots of promise, but not yet much substance. But by the end of 2025, agents were delivering on all the hype, and then some.

    What is an AI agent? A good place to start is the familiar meaning of "agent": someone who acts on behalf of someone else. A traditional chatbot like ChatGPT is not an agent because it can't do anything other than write text in response to your prompts. But if you give an LLM access to a set of tools and instructions about how to use them, you can give the model the capacity to act—to do something on your behalf.

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