What is an SDK, CLI, and API? — The Three Interfaces to AI
Understand the three ways you interact with AI systems — SDKs, CLIs, and APIs — and when to use each one.
Every AI tool you'll work with exposes itself through one (or more) of three interfaces: an API, an SDK, or a CLI. These aren't just technical details — they determine how you build with AI, how much control you have, and what's possible in your workflows.
Think of it like ordering food. An API is calling the restaurant directly and placing your order over the phone. An SDK is a meal kit with pre-measured ingredients and recipes. A CLI is walking up to the counter and telling the chef what you want in plain language.
Same kitchen. Three very different experiences.
API — The Raw Connection
An Application Programming Interface is the most fundamental way to talk to an AI model. You send an HTTP request with your prompt, and you get back a response. That's it. No wrapp
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