LLaMA is Meta's family of open neural networks and the foundation of almost the entire open-model ecosystem: most free language models on the market grew out of it in one way or another.
The key difference from ChatGPT and Claude is the published weights. The model can be downloaded and run on your own server, which means nobody can switch it off or change it without warning. Price follows from that openness: anyone can run LLaMA, and the competition keeps the cost well below closed equivalents. The larger fourth-generation models hold a million tokens in context.
LLaMA models are available in GPTunneL without a server of your own — worldwide, without a VPN, with one balance and billing for the tokens you actually spend.