A gallery of interesting challenges for AI

✏️Claude Opus 4.5

Claude Opus 4.5 is now available for all topics. Anthropic's newest flagship model is everyone's new favourite coding assistant and 3x cheaper than Opus 4.1.

✏️HTML Previews

Added a "Preview HTML" button to HTML output, allowing you to run it in your browser!

See Tetris Clone. Opus 4.5's effort is my favourite so far.

✏️Gemini 3 Pro

Added Gemini 3 Pro to the default model roster.

✏️Debates

Models can now take part in structured debates! All debates