TL;DR: If your writing has to earn money, start with Omnisend. Its free plan covers up to 500 emails a month, and its built-in AI writes subject lines and campaign copy where the revenue actually happens. For long-form marketing drafts, pair it with Jasper Pro at $59/month billed yearly, based on official pricing and specs.
Last updated: 2026-09-04
Starting monthly prices, verified on official pricing pages, September 2026.
Every AI writing tool promises faster drafts. The real question is what happens after the draft. A blog post still needs editing, a product description still needs a storefront, and an email still needs a sender. This comparison sorts six options by the workflow they fit, with prices checked on official pricing pages.
One note on timing: the models underneath these tools keep moving. OpenAI reported on September 3, 2026 that Legora used GPT-6 Astra to review 41 documents in minutes, and Playco cut manual fixes by half while prototyping with it (OpenAI, 2026-09-03). Better base models lift every tool on this list, which makes workflow fit matter more than raw output quality.
When to pick: you run a store or newsletter and your writing ends in an inbox. Omnisend combines the email sender with AI subject-line and campaign copy help, plus product recommendations pulled from browsing behavior, so the draft and the delivery live in one place.
Cost: free up to 500 emails a month; paid Standard plans scale with list size and include 24/7 support on every tier. SMS starts at $0.007 per message for high-volume US sends, based on the official pricing page.
Avoid if: you do not send email campaigns at all. Then Omnisend is a sender you will never use, and a pure writing tool fits better.
When does Jasper win?
When to pick: marketing teams producing blog posts, campaign briefs, and multi-brand content that must stay on voice. Jasper adds brand voice controls and collaborative workflows on top of generation.
Cost: Pro is $59/month billed yearly or $69/month billed monthly, with a 7-day free trial, based on the official pricing page. Business plans are custom-priced.
Avoid if: you write alone and publish short pieces. The per-seat value drops fast for solo use.
When does Grammarly win?
When to pick: your bottleneck is editing, not drafting. Grammarly fixes grammar, rewrites full sentences, adjusts tone, and checks for plagiarism and AI-generated text across every app you write in.
Cost: free covers writing without mistakes plus 100 AI prompts a month; Pro is $12/month with 2,000 prompts per member, based on the official plans page.
Avoid if: you need full first drafts from a blank page. Grammarly polishes text; it does not replace a generator.
When does Rytr win?
When to pick: freelancers on a tight budget writing short copy in several tones. Rytr is the cheapest paid option here and supports 30-plus languages.
Cost: free gives 10K characters a month; Unlimited is $7.50/month and Premium is $24.16/month with more plagiarism checks and tone matches, based on the official pricing page.
Avoid if: you need long-form structure or brand governance. Rytr is a short-form sprinter.
When does Writesonic win?
When to pick: your content must show up in search results and AI answers. Writesonic has shifted toward tracking brand visibility across ChatGPT, Gemini, and Google AI Overviews, with AI articles and site audits bundled in.
Cost: Starter is $79/month billed yearly with 15 AI articles a month, based on the official pricing page.
Avoid if: you only need a writing assistant. You would pay for tracking dashboards you never open.
When does Copy.ai win?
When to pick: larger teams automating go-to-market workflows with shared credits and seats. Copy.ai now sells workflow automation, not casual writing help.
Cost: Growth starts at $1,000/month billed yearly with 75 seats and 20K workflow credits a month, based on the official pricing page.
Avoid if: you are an individual or small shop. Four-figure pricing rules it out.
Our verdict
Pick Omnisend if your words need to sell through email or SMS.
Add Jasper Pro if long-form marketing drafts eat your week.
Keep Grammarly free or Pro as the editing layer under any generator.
Choose Rytr if the budget is under $10 a month.
Recheck prices before you buy; all figures above come from official pricing pages checked in September 2026.
FAQ
What is the best AI writing tool for email copy?
Omnisend, because the AI copy help sits inside the sender: subject lines, campaign text, and send-time suggestions in one place, with a free plan up to 500 emails a month.
What is the cheapest AI writing tool that is still useful?
Rytr. Free covers 10K characters a month, and Unlimited is $7.50/month, the lowest paid tier among the tools compared here.
Is Jasper worth $59 a month?
For teams producing steady marketing content with brand-voice controls, yes. Solo writers doing short posts will get less for the money.
Do I still need Grammarly if I use a generator?
In most cases, yes. Generators draft; Grammarly catches grammar, tone, and plagiarism issues across every app, and its free tier is generous.
Why is Copy.ai so expensive now?
It moved upmarket to team workflow automation. Growth starts at $1,000/month billed yearly, so it competes with process software, not writing apps.
Disclosure: Some links on this page are affiliate links. We may earn a commission if you buy through them, at no extra cost to you. We only recommend services we have researched.
