Is this a full screenshot of the page? You can not only collapse the panel, you can also resize it in a way you want. Just drag the top edge of the panel.

In terms of calls to LLMs. I do not use any frameworks or LLM proxies like OpenRouter etc. Instead, I make the calls directly to LLM providers with a tiny thin proxy endpoint I created in Supabase.

One of the problems I had with other tools was the difficulty in understand the actual responses that particular playgrounds provided. Especially when it came to error responses. I guess that they are either built with the some Proxy providers like OpenRouter who handles and interprets errors internally before giving a response to the user, or they are using frameworks like LangChain with their abstraction hell.

In our case on Yola, it was crucial to have a playground that provided this raw type of experience that I have builtin.