Access of LLaMA-2-7b-chat-hf Model

I was trying to connect
$url = ‘https://api-inference.huggingface.co/models/meta-llama/LLaMA-2-7b-chat-hf
with PHP code using API key

but it gives
[error] => Model requires a Pro subscription; check out Hugging Face – Pricing to learn more. Make sure to include your HF token in your query.

Please suggest any solution