With Vercel AI Playground, you can access top-of-the-line models like Llama2, Claude2, Command Nightly, GPT-4, and even open-source models from HuggingFace. You can compare these models' performance side-by-side or just chat with them like any other chatbot. In addition to free access, the playground offers additional information about models' context lengths and input/output pricing. It also provides API and Page code so that you can build your own chatbot app, similar to the AI Playground.