Is Chat area actually dying?

Users are reporting a decline in the performance of GPT 5.6 Sol in the Chat area, noting that it sometimes fails to reason, producing faster but incomplete and poorly structured outputs. Previously, it would carefully analyze projects, but now it rushes through, missing context. This degradation is concerning subscribers, with some stating they will cancel their subscriptions if the Chat area's quality continues to decline, especially when compared to alternatives like Claude's 15€ plan with Opus 5.5.