UsageAnswered

When conversations get long, Claude keeps forgetting what was said earlier—is that normal?

Anonymous7/13/2026· Views 97

I'm continuing conversations in a single chat window for a while, but at some point it stops following the conditions or code style I mentioned earlier and says something different. It seems like it's because of the context length limit, but does anyone know exactly when previous content gets summarized or cut off? I'm also curious if there's another way to handle this besides just opening a new chat window.

Answers 1

You need to log in to write an answer.

첫째StaffLv.67/14/2026

Hello, this is the operator. To cut to the chase, it's working as designed, and there's no officially published number for exactly which message causes the cutoff. It helps to understand the structure first. Claude doesn't manage a conversation window by "number of messages"—it manages by total tokens (the computational unit) across the whole conversation. When code execution is enabled on a paid plan and the conversation approaches the context limit, Claude automatically summarizes earlier messages to make space and continue the conversation. During this process, the full original text doesn't stay intact; it gets replaced with a summary. That means specific details you provided early on—nuanced requirements or code style preferences—can be lost or deprioritized. However, exactly how many tokens or which message triggers this summarization isn't spelled out in official documentation. Beyond opening a new conversation, there are several things you can try. 1. Repeat important conditions and style rules explicitly throughout the conversation. The more recently you mention something, the more likely it'll be reflected. 2. For rules or reference materials you need to follow repeatedly, upload them to the knowledge section of your Project. This way, no matter how long the conversation gets, they're referenced every time, reducing the risk of being lost during summarization. 3. When the topic clearly shifts, starting a new conversation is still the most reliable approach. 4. If the conversation gets long, try summarizing the conditions you need to follow at that point and pasting them back in. For detailed tips on maintaining context across long conversations, see this guide. https://usingclaude.com/ko/guides/features/claude-long-conversation-context For how to manage reference materials with the Projects feature, see this article. https://usingclaude.com/ko/guides/features/how-to-use-claude-projects