Short answer (as of Oct 14, 2026): Each page below gives a short answer first, then the details and sources.
Is Llama open source?
No, not by the official definition. Llama is open weights. It is free to download and most businesses can use it, but Meta's own license adds rules.
Best local AI for 16 GB of RAM
On a 16 GB computer, start with Mistral Nemo 12B, Gemma 3 12B, Gemma 4 12B. They fit with room to spare. GPT-OSS 20B is a tight squeeze.
Can my gaming PC run AI?
Probably. A graphics card with 8 GB of VRAM runs small models. 12 to 16 GB runs good everyday models. Check yours in Task Manager in about 2 minutes.