Some interesting things are going on with Grok lately. This was added to the UI today, but Grok started using skills about three days ago. Including the skill file 'memory-edit' which Grok says it uses to 'maintain useful context across conversations'. Elon said the new larger versions, including a 1.5T, were finishing up training a couple of weeks ago. So it's possible they are about to roll out or are being tested now. Grok has noticeably improved in complex conversations.