Using Azure AI Foundry Model Router in your AI projects.
Azure AI Foundry Model Router intelligently routes LLM requests to the most suitable model based on query complexity, cost, and performance requirements. It achieves up to 60% cost savings by automatically selecting smaller models for simple tasks and larger models for complex reasoning, packaged as a single deployment that simplifies integration with standard APIs.

post Stefano Demiliani
"It seems that the AL Copilot SDK is not able to use the Model Router endpoint."
Key points
- Model Router acts as a meta-orchestrator that evaluates prompts in real-time and routes them to appropriate underlying models like gpt-4.1-nano, gpt-4.1-mini, gpt-4.1, or o4-mini
- Achieves significant cost reductions by routing simpler queries to smaller, cheaper models while maintaining accuracy
- Integrates via standard Chat Completions API with a single endpoint, decoupling application logic from specific AI models
- Context window is limited by the smallest underlying model, which may cause failures if prompts exceed that model’s capacity
- AL Copilot SDK currently does not support Model Router endpoints, requiring alternative approaches like custom AI layers for Business Central integrations
Quotes
- “It seems that the AL Copilot SDK is not able to use the Model Router endpoint.” (Important limitation for Business Central developers considering Model Router integration within AL code)
- “The router also supports seamless scalability, adapting to varying workloads in real-time.” (Highlights the dynamic adaptation capability that makes Model Router suitable for production workloads with variable demand)
Context
- Features: Model Router deployment, Intelligent request routing, Cost optimization, Real-time model selection, Chat Completions API integration, Performance monitoring
- Versions: 2025-05-19
Source: Stefano Demiliani, community blog. Summary, key points and quotes are derived (CONTENT-NOTICE.md); read the original for the full text.