T8-R2 in five minutes
Colossus is the public name xAI has used for a large NVIDIA GPU cluster.
Descriptions of its size and site have been published and later updated.
This page states no current GPU count.
Confirm the company's own page before you repeat any figure.
The lesson is scale and lead time, not a number to memorize.
Write the sentence you are allowed to say: public posts have described a very large cluster, and the count is something you re-check. Then stop.
Sources and go deeper
- xAI public site vendor confirm The site root returned 403 on 2026-10. last checked 2026-10
- NVIDIA H100 GPU product page. Confirm any number before quoting it. vendor last checked 2026-10
- Colossus supercomputer page on the xAI site vendor confirm This URL returned 403 on 2026-10, so it is not linked. last checked 2026-10
- Graphics processing unit — Wikipedia wikipedia last checked 2026-10
- Hopper (microarchitecture) — Wikipedia wikipedia The H100 title redirects to the Hopper page. last checked 2026-10