OpenRouter is a specialized service that offers access to an array of Large Language Models (LLMs), including but not limited to GPT-4 32K, Google PaLM, Llama v2 70B, and Anthropic. After creating an account on their website, you can either use certain models for free or purchase credits to access premium models. OpenRouter operates on a ‘pay-as-you-go’ model with a shared credit pool, meaning you only pay for the resources you actually use. Once you’ve signed up and generated an API key from OpenRouter, you can use this key to seamlessly integrate these LLMs into your Voxta app.