Claude Opus 4.8 Fast API AI Agent

Claude Opus 4.8 Fast Pricing

An AI agent workload (50K input + 5K output tokens, 100 tasks/day) costs approximately $2313.44/month on Qubax.

Why use Claude Opus 4.8 Fast 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 4.8 Fast

Claude Opus 4.8 low-latency variant on the Morpheus Qubax (via Mordiem). Skips extended thinking for faster response at higher per-token cost. It supports a 1M-token context window and up to 128K output tokens per request. Native capabilities include tool calling, structured output, streaming. On Qubax it is served by 158 independent sellers, so pricing stays competitive and uptime stays high.

Claude Opus 4.8 Fast 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-4-8-fast",
    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 4.8 Fast AI Agent FAQ