The article discusses the trend of inference APIs moving away from providing portable sessions, where a user can take their conversation history and continue it with a different model or provider. This shift is driven by features such as encrypted reasoning tokens, hosted searches, and opaque compaction, which prioritize provider convenience over user control. As a result, users are locked into a particular ecosystem, losing the ability to inspect, export, or replay their sessions. The authors argue that this direction has significant implications for user freedom and provider accountability.