Claude Opus 4.5 API AI Agent

Claude Opus 4.5 Pricing

An AI agent workload (50K input + 5K output tokens, 100 tasks/day) costs approximately $559.91/month on Qubax.

Why use Claude Opus 4.5 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 Claude Opus 4.5

Claude Opus 4.5 is a text generation model available on Qubax. It supports a 198K-token context window and up to 33K output tokens per request. Native capabilities include reasoning, vision, tool calling, structured output, streaming, context caching. On Qubax it is served by 457 independent sellers, so pricing stays competitive and uptime stays high.

Claude Opus 4.5 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="claude-opus-4.5",
    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"}

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Claude Opus 4.5 AI Agent FAQ