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The Model Router Pattern: Cost-, Quality-, and Latency-Aware Routing Across LLM Providers (2026)
model router llm routing cost-aware routing quality-aware routing latency-aware routing multi-provider llm martian notdiamond routellm bedrock intelligent prompt routing openrouter llm gateway pattern ai service patterns llm orchestration contextual bandit routing cascade router classifier router cost engineering llm ai architecture evergreen 2026