Kimi K3 Fast API AI Agent

Kimi K3 Fast Pricing

An AI agent workload (50K input + 5K output tokens, 100 tasks/day) costs approximately $379.69/month on Qubax.

Why use Kimi K3 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 Kimi K3 Fast

Kimi K3 Fast is Venice’s low-latency serving profile for Moonshot AI’s 1M-context multimodal Kimi K3 model, with reasoning, tools, and structured outputs. It supports a 1M-token context window and up to 131K output tokens per request. Native capabilities include reasoning, vision, tool calling, structured output, streaming. On Qubax it is served by 38 independent sellers, so pricing stays competitive and uptime stays high.

Kimi K3 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="kimi-k3-fast-api",
    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 Moonshot AI models on Qubax

Kimi K3 Fast AI Agent FAQ