K-Culture GlossaryㅇTechnical words in the news
Open Weights
A model whose blueprint (weights) is released publicly so anyone can download and use it. Llama, DeepSeek, and Qwen fall into this category.
In plain words
What an AI model really is comes down to a giant bundle of numbers learned during training — its weights. When those weights are published on the internet for anyone to download and use, that's an open-source model (more precisely, an open-weights model). Meta's Llama, China's DeepSeek and Qwen, and Mistral are the leading examples.
On the other side are closed models like GPT, Claude, and Gemini. The recipe stays secret, and you can only buy the finished dish as a service. With open models, you get the recipe (the weights) itself and can cook it yourself in your own kitchen (your server or PC) — use it for free, modify it through fine-tuning, and keep your data from ever leaving your system.
This is one of the biggest fault lines in AI news. "Have open models caught up to closed ones?" is a recurring headline, and the rise of Chinese open models in particular keeps feeding stories about US-China competition. The debate between "openness accelerates innovation" and "misuse risk can't be controlled" is a regular feature along this same divide.
How it shows up in the news
"DeepSeek releases full weights for its latest model, narrowing the gap with closed models" — the open camp's catch-up race is one of the most consistent running storylines in this space.
Open Source vs. Open-Source Model: What's the Difference
Is only the finished product disclosed?, Is the how-to-build process disclosed?
This is one of the most commonly misused terms in AI news. Most articles that say something was 'released as open source' actually just released the finished model file, without releasing the data or training code used to build it. News outlets follow the terminology companies use, but it diverges from the original meaning.
| Aspect | Open Weights | Open Source |
|---|---|---|
| What's disclosed | The finished model file (weights) | The entire blueprint — code, process, conditions |
| Can it be reproduced? | You can use it, but you don't know how it was made | Yes, you can take it and rebuild the exact same thing |
| In AI news coverage | Most things called an 'open-source model' actually belong here | Rarely used in its original sense |
| Usage restrictions | Often comes with usage terms, such as restrictions on commercial use | Freely modify and redistribute |
| Analogy | Handing over the finished dish | Sharing the entire recipe |
Rule of thumbIf what's disclosed is 'how to build it,' it's open source; if it's 'the finished file,' it's open weight. It's worth knowing that news articles often don't distinguish between the two.
See also
Stories using this term
No story has used this term yet. New ones attach here automatically.