AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
benchmark — A standard public test set for comparing AI models — the shared scoreboards behind every "model X beats model Y" claim.
open weights — A model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.
Why it matters
Concrete evidence that a fine-tuned open weightsA model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.Full definition → tool-calling AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → can beat a frontier model on a narrow product surface — and a list of the data-formatting and infrastructure failure modes that quietly cost accuracy along the way.
