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An AI agent combines a model with a harness, the interface and tooling that lets it act. Commercial options include Anthropic's Cloud Code and OpenAI's Codex, while open-source alternatives like Hermes and DeepSeek offer the same components.
An AI agent combines a model with a harness, the interface and tooling that lets it act. Commercial options include Anthropic's Cloud Code and OpenAI's Codex, while open-source alternatives like Hermes and DeepSeek offer the same components.
In short, an agent is a model plus a harness. So in the right-hand side, we give a few examples about the famous harness and AI models. For example, you might heard about Cloud Code or Codex. Cloud Code is from Anthropic. Codex is from OpenAI. They are the harness layer. And in the middle, you heard about Cloud Opus 5. This is a large language model. Or GPT-5.6 Luna. This is also a large language model. In addition to this closed-source commercial licensed harness and model, we also have open-source harnesses and models. For example, you might have heard about Hermes, which is a very famous self-involving AI agent, and the DeepSeek harness, which is from China, is also a very famous harness released recently. And in the middle, you have open-source models. models like QINN or DeepSeek models. These are also famous open-source models. So in short, an agent is a model plus a harness.
