Your AI Memory Keeps You Tied to One Chatbot

Billionaire investor Mark Cuban argued on X on Oct. 18, 2026, that stored chatbot memories make it costly for consumers to change services unless a common export format exists. He said heavier use means more stored memory and more work to export and import, though he did not claim transfers are impossible and compared the difficulty with saving an Excel or Word file. Many users rejected his premise, saying current models can read almost any file without a shared format. In March, Anthropic opened Claude’s memory feature to free users and allowed newcomers to paste in chat histories from rivals such as ChatGPT; a 2024 open standard called Model Context Protocol lets models connect to outside data.