I think they're talking about the Sandbox/Playground/Editor thingy that almost all companies who expose APIs also offer to quickly try out API features. For Ope

I think they're talking about the Sandbox/Playground/Editor thingy that almost all companies who expose APIs also offer to quickly try out API features. For OpenAI it's https://platform.openai.com/playground/prompts?models=gpt-4.1 https://platform.openai.com/playground/prompts?models=gpt-4...., Anthropic has https://console.anthropic.com/workbench https://console.anthropic.com/workbench and so on.