Eval vs TPU
Eval (Model Evaluation) and TPU (Tensor Processing Unit) 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: Eval refers to model evaluation, while TPU refers to tensor processing unit — they describe different things even when they show up in the same sentence.
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.
TPU — Tensor Processing Unit
Custom silicon designed by Google specifically for tensor math — the dominant operation in neural networks. TPUs trade general-purpose flexibility for raw efficiency on AI workloads.
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.
When to use TPU
Reach for "TPU" when the conversation is specifically about tensor processing unit. Custom silicon designed by Google specifically for tensor math — the dominant operation in neural networks. TPUs trade general-purpose flexibility for raw efficiency on AI workloads.
FAQs
What is the difference between Eval and TPU?
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. TPU stands for Tensor Processing Unit — Custom silicon designed by Google specifically for tensor math — the dominant operation in neural networks. TPUs trade general-purpose flexibility for raw efficiency on AI workloads.
Are Eval and TPU the same thing?
No. They're often used in the same conversation because they're related, but they describe different concepts. Eval = Model Evaluation. TPU = Tensor Processing Unit.
When should I use Eval vs TPU?
Use Eval when you're specifically referring to model evaluation. Use TPU when the topic is tensor processing unit.