AI models, including Large Language Models (LLMs), are categorized as open source or closed source based on the accessibility of their algorithms.

Open source models make their algorithms publicly available for inspection, and in some cases, details about their training data are also shared.

Closed source models, on the other hand, keep both their algorithms and training data proprietary.

Bitcoin, the pioneering decentralized digital currency, has its algorithms publicly accessible but is distinct from AI models.

Its protocol incorporates features like the Proof of Work consensus algorithm and adaptive difficulty adjustment, which resemble AI concepts such as computational problem-solving and adaptability.