{"component":{"type":17,"accent_color":7742708,"components":[{"type":9,"components":[{"type":10,"content":"## [Nemotron 3 Ultra (free)](https://openrouter.ai/nvidia/nemotron-3-ultra-550b-a55b:free)\nnvidia · 1M context · Free"},{"type":10,"content":"NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it supports text input and output with a context window of up to 1M…"}],"accessory":{"type":2,"style":5,"label":"Open","url":"https://openrouter.ai/nvidia/nemotron-3-ultra-550b-a55b:free"}},{"type":14,"divider":true,"spacing":1},{"type":1,"components":[{"type":2,"style":5,"label":"Chat","url":"https://openrouter.ai/chat?models=nvidia%2Fnemotron-3-ultra-550b-a55b%3Afree","emoji":{"name":"💬"}},{"type":2,"style":5,"label":"Compare","url":"https://openrouter.ai/compare/nvidia/nemotron-3-ultra-550b-a55b:free"},{"type":2,"style":5,"label":"API","url":"https://openrouter.ai/nvidia/nemotron-3-ultra-550b-a55b:free/api"}]}]}}