Claude is clearly the superior product id say.

The only reason I open Chat now is because Claude will refuse to answer questions on a variety of topics including for example medication side effects.

When I tested o1 a few hours ago, it seemed like it was losing context. After I asked it to use a specific writing style, and pasting a large reference text, it forgot my demand. I reminded it, and it kept the rule for a few more messages, and after another long paste it forgot again.