How to choose
Start with your main use case. If you mostly produce marketing content and care about a consistent tone across channels and contributors, prioritize a tool with saved brand voice controls and team collaboration. If your writing is broad and varied, a flexible general-purpose assistant will cover more ground than a marketing-specific platform.
Check how each tool handles SEO and research. Some pair drafting with keyword targeting, SERP or competitor analysis, and web-grounded research, which matters if search traffic is the point of your content. Others are stronger as a general drafting and ideation partner and leave optimization to a separate tool.
Look closely at pricing and free access. One tool here has a genuinely useful free tier, two offer limited free plans to test before paying, and one is paid with a trial but no permanent free plan. Note that some platforms change their pricing and feature packaging often, so confirm current limits on the vendor's site.
Whichever you choose, plan to edit. Every tool in this list produces drafts that need human review and fact-checking before publication, and output quality varies with the prompt and the topic.