Taplio is a good tool. If you leave it, it's almost never because it writes badly. It's because it tells you nothing about what your content produces.
The full comparison is on the Taplio alternative page. Here are the three reasons that keep coming up.
An assistant that never judges you
A generator produces text and stops there. You don't know if the hook holds, if the structure reads well, or if there's a CTA at all.
Kast scores every post on four criteria: hook, structure, CTA and voice, with details on what's off. The free analyzer does the same thing on a draft, no sign-up needed.
The voice that fades away
After a few weeks drawing on an inspiration library every user shares, the posts start to look alike. Yours looks like the next person's.
Plume starts from your projects and your past posts to suggest a first draft. You make the call, you rewrite, you publish. The tool never publishes for you.
Posting more is pointless if you don't know which of your posts led to a conversation.
The people who reacted, and who you let walk away
This is what really makes the difference. You paste a post's URL, Kast gathers the people who liked or commented, with their job title and company, and you send the list to Lemlist, Instantly or a file.
Then you write to them yourself, to someone who just read your ideas. Kast never sends messages for you, and that's on purpose.
Who it's worth switching for
If your problem is producing more, stay where you are. If your problem is knowing what your content brings in, read the only three numbers that matter then look at the line-by-line comparison.