Everything in the catalog

Draw a user interface on a canvas and a vision model turns it into working HTML; uses your own API key.

Converts PyTorch model weights to the safetensors format; asks for a Hugging Face token.

Counts tokens for text and image attachments across several Claude models using Anthropic token-counting API and your key.

Try one JavaScript library against OpenAI, Anthropic or Gemini models by picking a provider and pasting a key.

Sends prompts with different structures to OpenAI and shows how many tokens were served from cache.