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PSA: ChatGPT never tells you a conversation has gotten too long, it just quietly forgets the beginning

This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.

This one cost me a real mistake before I understood what was happening. Models have a context window, a limit on how much of the conversation they can see. Here is the part nobody tells you: when a chat outgrows it, nothing fails. No error, no warning. The oldest messages just fall out of view, and…

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  1. 2026-09-01 13:46 · r/ChatGPT
    PSA: ChatGPT never tells you a conversation has gotten too long, it just quietly forgets the beginning

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