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Nexus is a routing platform that provides endpoints for various Large Language Models through a unified API interface. Explore Nexus’s capabilities and documentation here.

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Authentication

Nexus requires API keys for the underlying model providers. Set the appropriate environment variables for the models you plan to use: 
export OPENAI_API_KEY=***
export ANTHROPIC_API_KEY=***

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Example

Use Nexus with your Agent: 
from agno.agent import Agent
from agno.models.nexus import Nexus

agent = Agent(model=Nexus(id="anthropic/claude-sonnet-4-20250514"), markdown=True)

# Print the response in the terminal
agent.print_response("Share a 2 sentence horror story")
View more examples here.

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Params

ParameterTypeDefaultDescription
idstr"gpt-4o-mini"The id of the model to use through Nexus
namestr"Nexus"The name of the model
providerstr"Nexus"The provider of the model
api_keyOptional[str]NoneThe API key for Nexus (defaults to NEXUS_API_KEY env var)
base_urlstr"https://api.nexusflow.ai/v1"The base URL for the Nexus API
Nexus also supports the params of OpenAI.