In a long Claude chat, it sometimes seems to miss a decision or constraint we agreed on much earlier. The detail is still visible when I scroll back, so I’m not sure whether I’m running into a context limit, an output limit, or something else.

Has anyone found a reliable way to tell when a long Claude conversation is losing earlier context? I’m especially interested in whether this differs between the regular chat interface and API use, and what signals to watch for before relying on old details.