Kimi AI

Kimi AI by Moonshot AI provides advanced multimodal reasoning models with up to 256K context windows. Use Kimi K2.5 and other models through the OpenAI-compatible Chat Completions API with Vision Agents.

Vision Agents uses Stream Video for real-time WebRTC transport by default. External WebRTC transports are supported as well. Most AI providers offer free tiers to get started.

Get your Kimi API key from the Moonshot Platform.

Installation

uv add "vision-agents[openai]"

Quick Start

from vision_agents.core import Agent, User
from vision_agents.plugins import openai, getstream, deepgram, elevenlabs

agent = Agent(
    edge=getstream.Edge(),
    agent_user=User(name="Assistant", id="agent"),
    instructions="You are a helpful assistant.",
    llm=openai.ChatCompletionsLLM(
        model="kimi-k2.5-preview",
        base_url="https://api.moonshot.ai/v1",
        api_key="your_moonshot_api_key",  # or set MOONSHOT_API_KEY env var
    ),
    stt=deepgram.STT(),
    tts=elevenlabs.TTS(),
)

Set MOONSHOT_API_KEY in your environment or pass api_key directly.

Parameters

Name	Type	Default	Description
model	str	—	Model identifier (see available models below)
api_key	str	None	API key (defaults to MOONSHOT_API_KEY env var)
base_url	str	"https://api.moonshot.ai/v1"	Kimi API endpoint

Available Models

Model	Context	Description
kimi-k2.5-preview	256K	Latest multimodal model with vision and reasoning
kimi-k2-0711-preview	128K	1T parameter MoE model with strong reasoning
moonshot-v1-8k	8K	Fast responses for shorter contexts
moonshot-v1-32k	32K	Balanced performance and context
moonshot-v1-128k	128K	Extended context for long documents

Moonshot recommends temperature=0.6 for balanced accuracy, or temperature=1.0 for more creative responses.

Function Calling

Kimi K2.5 supports function calling with automatic tool invocation:

@agent.llm.register_function(description="Get weather for a location")
async def get_weather(location: str) -> str:
    return f"The weather in {location} is sunny and 72°F"

See the Function Calling guide for details.

Next Steps

Build a Voice Agent

Get started with voice

Build a Video Agent

Add video processing