Multi-Model Context Routing Protocol

Multi-Model Architectures

Modern AI applications often use multiple models: specialized models for specific tasks, cost optimization with smaller models, and different providers for capabilities. ECM Protocol supports context routing across models.

Router Specification

Route Request

{
  "operation": "route.context",
  "task": {
    "type": "summarization",
    "input_tokens": 5000,
    "required_capabilities": ["long_context"]
  },
  "context": {
    "context_ids": ["ctx-1", "ctx-2"]
  },
  "constraints": {
    "max_latency_ms": 2000,
    "max_cost_per_1k_tokens": 0.01
  }
}

Route Response

{
  "selected_model": {
    "provider": "anthropic",
    "model": "claude-3-haiku",
    "estimated_latency_ms": 800,
    "estimated_cost": 0.005
  },
  "context_strategy": {
    "injection_point": "system",
    "format": "xml",
    "truncation": "relevance"
  }
}

Model Registry

Model Capabilities

Registry tracks model capabilities:

{
  "model_id": "claude-3-opus",
  "capabilities": {
    "context_window": 200000,
    "supported_tasks": ["reasoning", "coding", "analysis"],
    "languages": ["en", "fr", "de", ...],
    "vision": true,
    "function_calling": true
  },
  "performance": {
    "avg_latency_ms": 2000,
    "throughput_tpm": 100000
  },
  "cost": {
    "input_per_1k": 0.015,
    "output_per_1k": 0.075
  }
}

Routing Strategies

Capability-Based

Route based on required capabilities. Match task requirements to model capabilities. Filter to capable models first.

Cost-Optimized

Minimize cost while meeting requirements. Use cheaper models when sufficient. Reserve expensive models for complex tasks.

Latency-Optimized

Minimize response time. Consider model latency characteristics. Account for context preparation time.

Quality-Optimized

Maximize output quality. Route to best model for task type. Benchmark-informed routing.

Fallback Protocol

Cascading Fallback

Define fallback chains for failures. Primary model fails → try secondary. Include rate limit handling. Circuit breakers for unhealthy models.

Context Adaptation

Adapt context for fallback models. Truncate for smaller context windows. Reformat for different requirements. Preserve essential information.

Conclusion

Multi-model routing enables optimal model selection for each task. The ECM Protocol routing specification provides standardized model registry, routing rules, and fallback handling.

> Multi-Model Context Routing Protocol