Which GPT is free?

Could you please clarify which GPT model you are referring to? There are several GPT models available, and not all of them are free to use. Some GPT models, such as the popular GPT-3, are available through paid APIs and require licensing fees to access. However, there are also some open-source versions of GPT models that may be free to use, depending on the specific license terms and conditions. It's important to note that the performance and capabilities of free GPT models may not be as advanced as those of paid models. Additionally, it's important to ensure that the use of any GPT model complies with any relevant laws and regulations, including data privacy and intellectual property laws.