AI
What an API Actually Does
•January 13, 2026
Original Description
Day 23/42: What Is an API?
Yesterday, we chose the model.
Now we connect to it.
An API is how your app sends a prompt and gets text back.
Your laptop isn’t running GPT-5.
It sends a request to a server that is.
APIs abstract away the complexity.
But they also introduce cost, latency, and limits.
Missed Day 22? Worth watching.
Tomorrow, we talk about going smaller: SLMs.
I’m Louis-François, PhD dropout, now CTO & co-founder at Towards AI. Follow me for tomorrow’s no-BS AI roundup 🚀
#API #LLM #AIExplained #short
Comments
Want to join the conversation?
Loading comments...