X's new Terms of Service took effect on October 9, 2026, and the most telling change is a short sentence that is no longer there. The previous terms said, in the section that lets X revise the agreement, "The changes will not be retroactive." In the new version, that sentence is gone in both regional texts, according to a line-by-line comparison published by Venpo, which monitors vendor terms.
The new terms replace the version dated April 10, 2026 for users outside the European Union, EFTA states and the United Kingdom, and the version dated January 15, 2026 for users inside them. X posted the new text a month earlier and published a short summary on September 9, 2026. That summary listed four points: how disputes are resolved, the class action and jury trial waiver, responsibility for autonomous features, and a clarification for European users. The comparison shows those four, and several edits the summary does not mention.
Removing the sentence is not the same as saying changes will be retroactive, and the new terms do not say that. What they now say is that the most current version governs the relationship, that X will try to give notice of material revisions, and that continued use means acceptance. One part of the document already reaches backward, however, and it grew in this update. The dispute section says its provisions apply to pending and future disputes regardless of when the conduct arose, and that wording now covers the new arbitration provisions as well as the choice of law and court.
The second major change concerns automation. Users were already responsible for their use of the services and their content. They are now responsible for use "including any features that perform autonomous actions," and for complying with laws that apply to "autonomous actions on your behalf." The terms do not define or list those features, but for anyone whose account is used by a tool, bot or agent, the responsibility is now stated expressly rather than implied.
Disputes for users outside Europe still belong in Texas courts, but there is a new fallback. If that court clause is found unenforceable, the dispute goes to binding arbitration in Tarrant County, Texas, heard by a retired federal district or appellate court judge through the American Arbitration Association. The arbitrator cannot grant injunctive relief, the parties waive appeal as far as the law allows, the process is confidential unless the law requires otherwise, and it runs on an individual basis only. A new paragraph also has both sides waiving the right to a trial by jury, next to the class action waiver that was already there.
Smaller edits round out the update. The dispute rules now name corporate affiliates including any U.S. SpaceXAI, Cursor or SpaceX entities, the deadline for state law claims moved from two years to two years and one day, and the definition of the services no longer links to a list of covered services. For European users, disputes still go to the courts of Ireland under Irish law.
For everyday users the practical takeaway is simple: keep a copy of the terms that applied on a given date, and know which automated tools can act under your account. The agreement that governs a personal account governs a company account in the same sentences, so what an agent posts or does on your behalf is, under these terms, your responsibility.