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...
With CoreAI, you can start chatting with NVIDIA: Nemotron 3 Ultra (free) instantly — no separate subscription needed. CoreAI lets you chat with NVIDIA: Nemotron 3 Ultra (free) alongside 300+ other AI models from NVIDIA and other providers like OpenAI, Anthropic, Google, Meta, and more.
Measured against all 321 chat models CoreAI serves, NVIDIA: Nemotron 3 Ultra (free) sits at #43 for context capacity — 1M tokens, roughly 750,000 words or 1,500 pages of text in a single conversation. It joined the catalog on 2026-06-04. It supports step-by-step reasoning (thinking mode).
Every model in this table is available on CoreAI — open the web app and run the same prompt through NVIDIA: Nemotron 3 Ultra (free) and NVIDIA: Nemotron 3.5 Content Safety (free) side by side to judge with your own eyes.
NVIDIA: Nemotron 3 Ultra (free) handles 1M tokens of context — roughly 750,000 words, or about 1,500 pages of text in one conversation.
NVIDIA: Nemotron 3 Ultra (free) is one of the budget-friendly options in the CoreAI catalog, included in the same single subscription as every other model.
No — NVIDIA: Nemotron 3 Ultra (free) is text-only. If you need image understanding, its budget-tier peers with vision are listed in the comparison table above.
Yes. NVIDIA: Nemotron 3 Ultra (free) can work through problems step by step before answering; on CoreAI you can toggle thinking mode per message.
Open the CoreAI web app or the iOS/Android app, pick NVIDIA: Nemotron 3 Ultra (free) in the model selector, and chat — no API key, no per-token billing. One subscription covers NVIDIA: Nemotron 3 Ultra (free) and 300+ other models.
The closest alternatives on CoreAI are NVIDIA: Nemotron 3.5 Content Safety (free), Qwen: Qwen3.5-Flash — similar tier and capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
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