Jasper. $69/mo.

The pitch: the AI built for marketing. Jasper writes on-brand advertorials, ad copy, emails, and landing pages, trained on your Brand Voice, with 100+ marketing agents, a Chrome extension, and a Copyscape plagiarism check. Over 100,000 businesses. The cheapest way in is the Pro plan at $69 a month billed monthly, or $59 a month if you pay for the year up front.

The reality: Jasper’s writing engine is a handful of large language models with a marketing prompt layer bolted on top. Claude does the same job when you hand it your Brand Voice as a saved skill: give it the offer, the angle, and the customer, and it writes the 600-word advertorial, the five subject lines, and the three ad variations in your tone. The Pillar 4 build turns that into one saved skill, so “write me an advertorial for this product” is one sentence instead of a monthly line item. Brand Voice is not the moat Jasper implies. It is a text file describing how you sound, and Claude reads that file the same way Jasper does.

What Jasper still gives you that the free build does not: the template library and marketing agents a blank prompt won’t hand you, the Copyscape plagiarism scan built in, an image suite, team seats with brand governance and an audit log, and SOC 2 compliance if your clients ask for it. If you run a content team that needs five writers all locked to one on-brand voice, keep it. If it’s just you writing your own ads, you’re paying $828 a year for a prompt template Claude rebuilds on request.

Replacing Jasper with the Pillar 4 build pays for the entire Vault subscription nearly seven times over in year one.