Embedding
Definition
A way of turning words, images, or other content into lists of numbers so an AI can work with them. The clever part is that similar things end up with similar numbers, so "dog" and "puppy" land close together while "dog" and "accountant" sit far apart. This is how AI tools find related information and recognise that two differently worded questions mean the same thing. You'll rarely touch embeddings directly, but they're working underneath a lot of what feels like understanding.
Why It Matters
It's part of the answer to how these tools seem to grasp meaning. You don't need to use embeddings, but knowing they exist demystifies a bit of the magic.
What does that look like in practice?
A search that finds the right note when you type 'that dinner with Sara' instead of the exact words is using embeddings to match meaning.
What people actually mean when they say this
When a tool 'understands what you meant,' embeddings are often why: it turned your words into numbers and matched them by meaning, not spelling.
Last reviewed: June 2026
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