Many AI writing tools advertise “free”, but a free plan, a free trial and a free tool with limits are different things. Of the six tools we reviewed, three have a real free plan and three only offer a trial. This guide shows what each includes, which to use for which job, and what to watch for.
Free plan or free trial?
A free plan stays available but is limited. A free trial gives you access for a short time, or a fixed number of credits, and then you pay. Free plans usually limit length, AI prompts or features, and the limits change often, so check each tool’s page.
Free AI writing tools compared
ChatGPT. Has a free plan with usage limits. It handles drafts, rewrites, brainstorming and emails, with no writing-specific templates, so results depend on your prompts. Check facts it states. Some chatbots allow limited use without an account in certain regions, but features and limits vary.
Grammarly. Free covers spelling, grammar and tone checks in your browser and apps, with about 100 AI prompts a month. Pro costs more and adds full rewrites and plagiarism checks. See our Grammarly pricing guide.
QuillBot. Free includes a paraphraser capped at 125 words per run and two modes, a basic grammar checker and a summarizer. See our QuillBot pricing guide.
Jasper. No free plan, only a 7-day trial of Pro, so use it on real briefs.
Sudowrite. No free plan, but a trial of about 10,000 credits with no credit card, enough to test a few scenes.
Writesonic. No permanent free plan, only a small trial. Reports on its size differ, so check the current offer.
Which free option for which job
Emails and short drafts: ChatGPT, polished with Grammarly Free.
Grammar and tone checks: Grammarly Free. See our guide to free AI grammar checkers.
Rewording and summarising: QuillBot Free.
Stories: ChatGPT’s free plan to brainstorm and draft, and Sudowrite’s trial to test a fiction-specific tool. See our guide to AI for novel and story writing.
SEO articles and brand-voice copy: these tools are built for paid use, so try the trials against a real brief.
Getting more from free plans
Use one tool for drafting and another for editing, so each stays within its limits. Split long text into sections for tools with word caps. Test two tools on the same paragraph and keep the one that needs less editing. Keep a copy of your original text.
Free doesn’t mean unlimited
Limits on length, prompts and features are common, and “unlimited free” claims deserve scepticism. Don’t paste confidential material into a tool you haven’t checked. AI suggestions can be wrong or change your meaning, so read every change. AI detectors are unreliable, and schools, employers and publishers have their own rules on AI-written text, so check the rules that apply to you.
Frequently asked questions
Is there a free AI writer?
Yes. ChatGPT, Grammarly and QuillBot have free plans, with limits.
Is there a free AI writing tool with no sign-up?
Some tools allow limited use without an account, but features and limits vary, so check before relying on one.
Is there an unlimited free AI writer?
Not really. Free plans cap length, prompts or features.
Is there a free AI story generator?
ChatGPT’s free plan can draft stories, and Sudowrite offers a trial. See our guide to AI for novel and story writing.
Which is the best AI writing tool overall?
See our list of the best AI writing tools.
How we researched this guide
This guide is based on our tool reviews, official pricing information and independent write-ups (checked November 2, 2026). We haven’t run our own trials. Free plans change often, so confirm details on each tool’s website.