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OpenRouter provides access to models from OpenAI, Anthropic, Google, Meta, and more through a single API.

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Setup

export OPENROUTER_API_KEY="sk-or-..."

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Basic Usage

from definable.model.openrouter import OpenRouter
from definable.model.message import Message

model = OpenRouter(id="meta-llama/llama-3-70b")
response = model.invoke(
    messages=[Message(role="user", content="Hello!")],
    assistant_message=Message(role="assistant", content=""),
)
print(response.content)

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String Shorthand

agent = Agent(model="openrouter/meta-llama/llama-3-70b")

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Parameters

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id
str
required
Model identifier from the OpenRouter model list.
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api_key
str
OpenRouter API key. Defaults to OPENROUTER_API_KEY.
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temperature
float
Sampling temperature.
​
max_tokens
int
Maximum output tokens.

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Imports

from definable.model.openrouter import OpenRouter