NVIDIA Nemotron 3 Ultra 550B API Chatbots
Build AI chatbots and conversational assistants powered by NVIDIA Nemotron 3 Ultra 550B. Full streaming support means users see tokens in real time — no waiting for complete responses.
NVIDIA Nemotron 3 Ultra 550B Pricing
| Token Type | Qubax | Retail | Save |
|---|---|---|---|
| Input (per 1M) | $0.0081 | $0.625 | 99% |
| Output (per 1M) | $0.041 | $3.13 | 99% |
Running a chatbot (2K input + 500 output tokens, 1,000 conversations/day) costs approximately $1.09/month on Qubax.
Why use NVIDIA Nemotron 3 Ultra 550B for chatbots on Qubax?
- 💬Customer support chatbots with 24/7 availability
- 💬AI assistants that remember conversation context
- 💬Multi-language chatbots serving global audiences
- 💬Streaming responses for instant perceived speed
About NVIDIA Nemotron 3 Ultra 550B
NVIDIA Nemotron 3 Ultra 550B-A55B — NVIDIA flagship reasoning model (550B total / 55B active MoE) tuned for agentic workloads, with a 1M-token context window. It supports a 1M-token context window and up to 16K output tokens per request. Native capabilities include reasoning, tool calling, structured output, streaming. On Qubax it is served by 111 independent sellers, so pricing stays competitive and uptime stays high.
NVIDIA Nemotron 3 Ultra 550B Chatbots — code example
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.qubax.ai/v1",
apiKey: process.env.QUBAX_KEY,
});
const stream = await client.chat.completions.create({
model: "nvidia-nemotron-3-ultra-550b-a55b",
messages: [...history, { role: "user", content: userMessage }],
stream: true,
});
for await (const chunk of stream) {
process.stdout.write(chunk.choices[0]?.delta?.content ?? "");
}More Other models on Qubax
Get started in 60 seconds
- 1Create a free account at qubax.ai/register
- 2Add crypto credits (200+ coins, $3 minimum, credits never expire)
- 3Generate an API key and set your base URL to
https://api.qubax.ai/v1 - 4Use model ID
nvidia-nemotron-3-ultra-550b-a55b— done!
NVIDIA Nemotron 3 Ultra 550B Chatbots FAQ
How much does NVIDIA Nemotron 3 Ultra 550B cost for chatbots?
On Qubax, NVIDIA Nemotron 3 Ultra 550B costs $0.0081 per 1M input tokens and $0.041 per 1M output tokens. 99% cheaper than OpenRouter. Pay with 200+ cryptocurrencies.
Can I use NVIDIA Nemotron 3 Ultra 550B with my existing tools?
Yes. Qubax is fully OpenAI-compatible. Change your base URL to api.qubax.ai/v1 and use your Qubax key. Works with Cline, Cursor, OpenCode, LangChain, and any OpenAI SDK.
Do I need a credit card?
No. Qubax accepts 200+ cryptocurrencies. No credit card, no KYC.
Start using NVIDIA Nemotron 3 Ultra 550B for chatbots
No credit card. Crypto accepted. Credits never expire.
Get started →