AI models have a fixed token limit—a maximum amount of text they can process in one conversation—and once you exceed it, the system essentially forgets earlier messages to make room for new ones. This is why a chatbot seems sharp early in a conversation but increasingly confused as history piles up.
Tokens are the small units of text that AI models process, and every model has a maximum number of tokens it can handle in a single interaction, covering both input and output combined.
Knowing how token limits work helps you structure long documents, multi-step tasks, and extended conversations so that the AI does not lose critical information midway through your most important requests.
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