External evidenceObserved 4 Jun 2026First recorded 4 Jun 2026
Model added: nvidia/Nemotron-3-Ultra-550b-a55b
nvidia/Nemotron-3-Ultra-550b-a55b appeared in the Nebius model catalogue.
Why it matters
Catalogue additions show how quickly the software layer follows upstream model releases.
Evidence boundary
The record is linked directly to the primary or public source.