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Nemotron 3 Ultra — Free AI Chat on Rewind.ai
Chat with Nemotron 3 Ultra for free — no signup, no credit card. NVIDIA's Nemotron 3 Ultra runs in your browser on Rewind.ai, with pay-as-you-go tokens and full API access.
What is Nemotron 3 Ultra?
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.
How does Nemotron 3 Ultra work?
Type your message in the box above and Nemotron 3 Ultra replies instantly — no setup required. Your chat history is saved locally in your browser; sign up free to sync it across devices and get an extra 10,000 tokens. You can switch between Nemotron 3 Ultra and other models at any time from the picker at the top.
Is Nemotron 3 Ultra free?
Nemotron 3 Ultra is pay-as-you-go at $0.60/M input tokens, but you can use it without paying: every visitor gets 2,500 free tokens a day with no sign up, and a free account raises that to 5,000.