Many people don't know that ChatGPT has a hidden chat limitation. It's not the kind of usage limit that resets after a few days, but rather a specific chat session that suddenly gets locked and can't be continued.

A user was using ChatGPT to help write an original novel when they suddenly received a notification that the chat had reached its limit. After starting a new session, the AI could barely remember the previous plot direction and character settings—one moment it was discussing a character waking from a coma, the next moment it insisted that chapter didn't even exist.

Seasoned users in the community are already accustomed to this. From experience, a single chat session typically hits the limit at 80,000-130,000 words, but the exact mechanism remains a mystery. Some speculate it's related to token counting, while others believe file uploads accelerate this process.

Currently available solutions include:

1. Copy the complete chat history to Google Docs and have the AI read it through a link

2. Use the Projects feature to create a dedicated memory repository

3. Export the conversation as a text file and re-upload it

However, all these methods have clear drawbacks: the free version handles long documents poorly, the Projects feature might trigger new limitations, and re-uploading files consumes a lot of tokens. Most ironically, one of these solutions was actually suggested by ChatGPT itself.

What's truly frustrating is that this limitation always appears at the most critical moment. It's like being one step away from completing a level when the game suddenly deletes your save file. Now you understand why some people are willing to pay to keep a specific version—at least it ensures the AI remembers what it has written.