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OpenRouter is a unified API that provides access to multiple LLM providers through a single OpenAI-compatible interface. Switch between Claude, Gemini, GPT, and more without changing your code.
Vision Agents requires a Stream account for real-time transport. Most providers offer free tiers to get started.

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Installation

uv add "vision-agents[openrouter]"

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Quick Start

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

agent = Agent(
    edge=getstream.Edge(),
    agent_user=User(name="Assistant", id="agent"),
    instructions="You are a helpful assistant.",
    llm=openrouter.LLM(model="anthropic/claude-sonnet-4"),
    tts=elevenlabs.TTS(),
    stt=deepgram.STT(),
)
Set OPENROUTER_API_KEY in your environment or pass api_key directly.

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Parameters

NameTypeDefaultDescription
modelstr"openrouter/andromeda-alpha"Model identifier (see available models)
api_keystrNoneAPI key (defaults to OPENROUTER_API_KEY env var)
base_urlstr"https://openrouter.ai/api/v1"API base URL

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Available Models

ProviderModel ID
Anthropicanthropic/claude-sonnet-4, anthropic/claude-opus-4
Googlegoogle/gemini-3-flash-preview, google/gemini-3.1-pro-preview
OpenAIopenai/gpt-5.4, openai/gpt-5.4
See OpenRouter Models for the full list.

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Next Steps

Build a Voice Agent

Get started with voice

Build a Video Agent

Add video processing