I've been trying to figure out the best LLM to use for writing. And I'd love to know which one you find the best. Here, I'm talking specifically about writing, not coding.
Never tried an Anthropic model until yesterday. But was not that impressed, frankly, with Opus 5.5. Admittedly, I have not tried it that much yet.
But I have to make a decision here in a few days as to whether or not I renew my $200 OpenAI plan.
For writing a course, I found careful planning with Astra and writing with GPT-6 Sol seems to produce the best results. Astra writes a bit too stilted, but plans really well, from what I have experienced.
I've never tried any other models than OpenAI and now Anthropic. Except