NVIDIA Nemotron 3 Ultra 550B API AI Agent

NVIDIA Nemotron 3 Ultra 550B Pricing

An AI agent workload (50K input + 5K output tokens, 100 tasks/day) costs approximately $1.82/month on Qubax.

Why use NVIDIA Nemotron 3 Ultra 550B for AI agents on Qubax?

• 🤖Autonomous agents that call APIs and external tools
• 🤖Multi-step reasoning for complex task completion
• 🤖Agent orchestration with LangChain, CrewAI, or custom frameworks
• 🤖Function calling for structured, reliable agent responses

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 AI Agent — code example

from openai import OpenAI
import json

client = OpenAI(
    base_url="https://api.qubax.ai/v1",
    api_key="qbx_live_YOUR_KEY",
)

tools = [{
    "type": "function",
    "function": {
        "name": "get_weather",
        "parameters": {"type": "object", "properties": {"city": {"type": "string"}}},
    },
}]

resp = client.chat.completions.create(
    model="nvidia-nemotron-3-ultra-550b-a55b",
    messages=[{"role": "user", "content": "What's the weather in Tokyo?"}],
    tools=tools,
)
call = resp.choices[0].message.tool_calls[0]
print(json.loads(call.function.arguments))  # -> {"city": "Tokyo"}

More Other models on Qubax

NVIDIA Nemotron 3 Ultra 550B AI Agent FAQ