Dev.to
6/29/2026

How to Build a Capability-First Model Portfolio in TypeScript
Short summary
Design AI applications around capabilities needed rather than specific model providers. An abstraction layer between product intent and model selection keeps you flexible and reduces vendor lock-in. In production, this layer should manage credentials, costs, provider fallback, and usage tracking.
- •Capability-first design decouples product logic from model provider choices
- •Abstraction layer enables flexible model portfolios and fallback strategies
- •Production systems must handle credentials, cost tracking, and availability management at the boundary layer
Generated with AI, which can make mistakes.
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