What is a Token?

What "tokens" are in the context of Artificial Intelligence. It describes tokens as the fundamental text units AI models process, which can be whole words, parts of words, or punctuation. The script highlights their importance due to their impact on AI's "context window" (limiting input/output length), processing speed, and cost, especially for developers. Understanding tokens helps users craft more efficient prompts, leading to quicker, more accurate responses, and better comprehend why AI might "forget" earlier parts of long conversations.