Embeddings vs Eval
Embeddings (Vector Embeddings) and Eval (Model Evaluation) both come up in ai & ml conversations and get confused. Here's the plain-English difference, side by side, so you can use each one with confidence.
The key difference: Embeddings refers to vector embeddings, while Eval refers to model evaluation — they describe different things even when they show up in the same sentence.
Embeddings — Vector Embeddings
Numerical vector representations of text, images, or other data that capture semantic meaning. Embeddings power similarity search, recommendation, and the retrieval half of RAG systems.
Eval — Model Evaluation
The systematic testing of an AI model's outputs against expected behavior — accuracy, safety, format adherence, regression. Without evals, every prompt change is a vibe-based deploy.
When to use Embeddings
Reach for "Embeddings" when the conversation is specifically about vector embeddings. Numerical vector representations of text, images, or other data that capture semantic meaning. Embeddings power similarity search, recommendation, and the retrieval half of RAG systems.
When to use Eval
Reach for "Eval" when the conversation is specifically about model evaluation. The systematic testing of an AI model's outputs against expected behavior — accuracy, safety, format adherence, regression. Without evals, every prompt change is a vibe-based deploy.
FAQs
What is the difference between Embeddings and Eval?
Embeddings stands for Vector Embeddings — Numerical vector representations of text, images, or other data that capture semantic meaning. Embeddings power similarity search, recommendation, and the retrieval half of RAG systems. Eval stands for Model Evaluation — The systematic testing of an AI model's outputs against expected behavior — accuracy, safety, format adherence, regression. Without evals, every prompt change is a vibe-based deploy.
Are Embeddings and Eval the same thing?
No. They're often used in the same conversation because they're related, but they describe different concepts. Embeddings = Vector Embeddings. Eval = Model Evaluation.
When should I use Embeddings vs Eval?
Use Embeddings when you're specifically referring to vector embeddings. Use Eval when the topic is model evaluation.