The number of questions on Stack Overflow fell by 78 percent in December 2025 compared to a year earlier. Developers are switching en masse to AI tools in
There are open weight models that users can download and run locally. Because the weights are open, they can be customised and fine tuned.
And then there are fully open source models, that publish everything, the model with open weights, the training source code, as well as the full training dataset.
There are free open source models you can run locally and they have all the answers.
But can anyone train on them? What happens to the original dataset?
There are open weight models that users can download and run locally. Because the weights are open, they can be customised and fine tuned.
And then there are fully open source models, that publish everything, the model with open weights, the training source code, as well as the full training dataset.