Grammarly change history: Supehuman Go and AI Chat experience temporary service interruption

Grammarly reported a major service interruption affecting Supehuman Go and AI Chat, with Generative AI assistance, Grammarly Editor, and Grammarly's Browser Extension listed as affected components. It started at 2026-01-21 00:40 UTC and was resolved at 2026-01-21 01:48 UTC, lasting 1 h 8 min; no cause or specific fix was stated.