good.

Reminds me the Adobe Shockwave games

Can't load the website on Firefox or Chromium

I guess their biggest customers are Cursor and other coding agent vendors, because they have solid and cheaper competitors outside the coding.

No matter how many new models are released that look very good in synthetic tests, Claude generates the best coding output IRL. And so they can keep having the most expensive API prices.

It was very well optimised

Almost all of the free model providers out there say they can log your prompts. For example, I looked at the link you posted.

"To our knowledge, this provider may use your prompts and completions to train new models."

If you do not have that much time, IMHO teachyourselfcs.com is better

Not exactly but there is a data science version: https://github.com/ossu/data-science