Timeline of open-weight models (roughly chronological): 2023: open weight models are toys. Llama 1/2 are fun to fine-tune but terrible to actually rely on. Everyone quietly still calls the closed-source API when the task matters. The gap is common knowledge and nobody argues about it. Early 2024: Mixtral shows up and it's the first time a lot of people believe this could be usable. Mid-late 2024: Llama 3 / 3.1 405B lands and for the first time an open weight model is being benchmarked…