NVIDIA: Nemotron 3 Ultra (nvidia/nemotron-3-ultra-550b-a55b) is a chat model from openrouter with a 512.3K-token context window; open-weight; capabilities tools, reasoning; input text; output text.
512.3KContext
16.4KMax output
$0.5$ / 1M in
Pricing
Input
$0.5 / 1M tokens
Output
$2.2 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: openrouter. Last verified 2026-07-24.