RoBC is an innovative online learning LLM router tailored for dynamic production environments. Leveraging advanced techniques such as Thompson Sampling and semantic clustering, RoBC continuously adapts to shifting model quality, eliminating the need for retraining.

Key Highlights

• Dynamic Adaptation: RoBC excels in environments where model quality fluctuates due to updates, API changes, or the introduction of new models.
• Online Learning: It enhances its performance with every request, making traditional retraining pipelines obsolete.
• Real-Time Discovery: RoBC has the capability to explore and evaluate new models as they become available, ensuring optimal routing decisions are always made.
• Efficient Routing: With a nominal routing decision overhead of approximately 1ms, RoBC provides swift and efficient model selection.

Performance Insights

In comparative assessments against the static classifier RoRF, RoBC has demonstrated significant advantages in dynamic scenarios:

• In instances of quality drift, RoBC outperforms RoRF by seamlessly adapting to changes in model rankings.
• When introducing new models, RoBC showcases a notable +5.3% improvement in performance, further emphasizing its capability to leverage newly available models effectively.

Quick Usage Example

To utilize RoBC for model routing, implement the following:

from robc import Controller

# Initialize the controller with your selected models
controller = Controller(
    models=["openai:gpt-5.2", "google:gemini-2.5-flash", "anthropic:claude-4.5-sonnet"],
    n_clusters=10,
)

# Route a request using an embedding from your model
embedding = get_embedding("What is the meaning of life?")
selected_model = controller.route(embedding)

print(f"Selected: {selected_model}")

Why Choose RoBC?

RoBC is ideally suited for situations where model performance is subject to change and there's a pressing need for real-time adaptability. It empowers users to shift away from static routers, offering improved flexibility and efficiency in dynamic environments. This makes it a powerful tool for applications that require continuous learning and model evaluation without the overhead of traditional retraining methodologies.

For developers seeking a robust, performance-oriented solution for model routing amidst fluctuating conditions, RoBC stands as a compelling choice.