The Same Week Users Report GPT-5.6 Silently Downgraded, a Separate Cross-Posted Thread Says It Got Massively Better

r/ChatGPT (446 upvotes) and r/OpenAI (142 upvotes), same title cross-posted·medium signalXBlueskyLinkedInCopy link

An identical post titled 'GPT 5.6 Got Massively Upgraded Without an Announcement' hit r/ChatGPT at 446 upvotes and r/OpenAI at 142 upvotes, describing Sol High as suddenly faster, deeper and hallucinating far less, 'like at least GPT 5.7.' OpenAI does have a published note on improving GPT-5.6 Sol in ChatGPT, but no version bump. Two opposite quality reports landing in the same 48 hours is the signature of server-side routing changes rolled out to some accounts and not others, which means practitioner reports about ChatGPT quality this week are not comparable to each other.