SISI GlossarySuper Intelligence, explained

An independent explainer · Updated September 30, 2026

Super Intelligence, explained.

On September 29, 2026, President Donald J. Trump signed an executive order — “Inaugurating the Era of Super Intelligence” — directing the federal executive branch to stop using the terms “artificial intelligence” and “AI” in official documents, and to use “Super Intelligence” and “SI” instead. This site is a plain-language guide to what changed, what didn’t, and what happens next.

Last updated September 30, 2026. This is an independent explainer, not a government publication.

The short version

  1. It’s a rename, not a new technology. The order says “Super Intelligence” covers exactly the same systems the law already defines as “artificial intelligence” (15 U.S.C. § 9401(3)). No new powers were granted; nothing was deregulated or newly regulated.
  2. It applies to the federal executive branch only. Agencies must use “SI” in official correspondence, websites, reports, and policy documents going forward. Private companies, state governments, and the rest of the world can keep saying “AI.”
  3. The definition isn’t finished yet. The White House science adviser has 60 days — until about November 28, 2026 — to propose a formal federal definition of “Super Intelligence” and suggest any changes to the law.

What changed

  • Federal agencies now use “Super Intelligence” / “SI” in new official documents, websites, and press releases.
  • The State Department had already begun instructing diplomats to use “SI” earlier in September 2026.
  • Six leading tech companies signed the voluntary White House Accord on Super Intelligence, pledging internal controls and independent audits.
  • Demand for Slovenia’s .si internet domains surged — registrations overtook .ai within about a day of the announcement.

What didn’t

  • The legal definition is unchanged: “SI” means what the statute already calls AI.
  • No existing regulations, contracts, grants, or historical documents have to be rewritten.
  • The Accord is voluntary — the president called it “morally binding,” but it carries no legal penalties.
  • Europe still says “AI” — the EU’s Artificial Intelligence Act keeps its name.
“It’s not artificial. It’s very powerful, it’s very brilliant… the word super is the best word of all, and it’s the simplest.” — President Donald J. Trump, at the launch of America.gov, September 29, 2026

Key facts at a glance

Sept 29, 2026

The executive order “Inaugurating the Era of Super Intelligence” was signed at the White House.

6 + 1

Signatories of the Accord: Google, Anthropic, Meta, OpenAI, xAI, NVIDIA — and the president.

60 days

Deadline for the White House science adviser to propose a formal federal definition of SI.

~3,700/day

New .si domain registrations per day after the announcement, versus ~3,500 in all of August 2026.

Explore the story

The Glossary

Every key term — from the executive order to the Accord to “.si” — defined in plain language, A to Z.

Browse the glossary →

The Timeline

How it unfolded: the Truth Social poll, the UN speech, the .si frenzy, the signing — and what’s next.

See the timeline →

The FAQ

Is SI different from AI? Does this affect me? Do companies have to use the new name? Answered.

Read the FAQ →

Sources