Tried the free version on OpenRouter with pi.dev and it's competent at tool calling and creative writing is "good enough" for me (more "natural Claude-level" and not robotic GPT-slop level) but it makes some grave mistakes (had some Hanzi in the output once and typos in words) so it may be good with "simple" agentic workflows but it's definitely not made for programming nor made for long writing.

What kind of creative writing are you doing? Fiction or non-fiction like blog posts?

it's actually pretty good at openclaw type of tasks for non technical users: lots of tool calls, some simple programing