StackZen

Best AI Writing tools, ranked

AI writing tools have gone from novelty to daily driver for marketers and content teams. We ranked the field on output quality, how much editing each draft needs and how honestly the long-form plans are priced.

Tools in AI Writing

Ranked by our score; unscored tools come last. The criteria are below.

  1. Notion AI

    from $20 per seat a month

    Notion AI adds writing, summarization and Q&A directly inside the Notion workspace, letting teams draft and refine documents without leaving their notes and wikis.

    Blog ToolsFreemiumScore 4.3/5

  2. Copy.ai

    from $24 a month

    Copy.ai is an AI copywriting tool for marketing copy, blog posts and sales emails. It generates first drafts fast with a large template library and a workflow builder for repeatable content tasks.

    CopywritingPaidScore 4.2/5

  3. Writesonic

    from $79 a month

    Writesonic is an AI writer and SEO content tool combining article generation with keyword research and a chat assistant, aimed at marketers producing search-optimized content.

    Blog ToolsPaidScore 4.2/5

  4. Rytr

    from $9 a month

    Rytr is a budget-friendly AI writing assistant for short-form copy across 40+ use cases and multiple languages, popular with freelancers and small businesses.

    CopywritingFreemiumScore 3.5/5

  5. Surfer SEO

    from $49 a month

    Surfer SEO is a content-optimization platform that scores drafts against top-ranking pages, guiding writers on keywords, structure and length for search performance.

    Blog ToolsPaidScore 3.4/5

  6. Jasper

    from $69 per seat a month

    Jasper is an enterprise-grade AI writing platform with brand voice, workflows and team features aimed at marketing organisations producing content at scale.

    CopywritingPaidScore 3.2/5

  7. Anyword

    from $39 a month

    Anyword is a performance-focused AI copywriting platform that predicts how copy will perform and tailors output to audience and channel for marketing teams.

    CopywritingPaidScore 3.2/5

  8. Wordtune

    from $4.89 a month

    Wordtune is an AI rewriting and editing assistant that rephrases, shortens and tones sentences, helping non-native and busy writers polish their existing text.

    CopywritingFreemiumScore 3.1/5

  9. Frase

    from $49 a month

    Frase combines SERP research, content briefs and AI writing into one workflow, helping content teams plan and produce SEO articles faster.

    Blog ToolsPaidScore 3.0/5

  10. Sudowrite

    from $10 a month

    Sudowrite is an AI writing tool built specifically for fiction and creative writers, offering story expansion, rewriting and brainstorming tuned for narrative prose.

    Blog ToolsPaidScore 1.8/5

The four things this ranking is built from

The order above is computed, not curated. These are the four columns it is computed from, and the questions each one is really asking.

  1. What the vendor documents

    35 points

    Published capabilities, weighted by how much each one decides whether you can adopt a tool and later leave it. An API and a data export carry the most; templates and a mobile app carry the least.

    If you had to move everything out of this tool next year, does the vendor document how?

  2. Whether the price is published

    25 points

    Plans with real numbers attached score highest. Tiers listed without prices score a fraction of that, and "contact sales" with nothing behind it scores nothing at all.

    Can you work out what this will cost you without talking to anyone?

  3. Whether you can try it first

    20 points

    A genuine free tier scores full marks. A tool with no way in scores zero here — not because it is worse, but because you commit before you know.

    Can you test it on your own work before the first invoice?

  4. What it connects to

    20 points

    The breadth of the published integration list. A tool that names nothing scores nothing, which is a statement about its documentation rather than about its connectors.

    Is the thing you already use on the list — and is that list published anywhere?

The full scoring formula, and what the score deliberately does not measure

Questions this ranking answers

What is the highest-rated AI Writing tool?

Notion AI, at 4.3 out of 5 — the top of this ranking. Read that as a transparency-and-capability score rather than a quality verdict: it says Notion AI documents more of what it does, publishes its prices and can be tried or left more easily than the rest of the AI Writing field. Whether it suits your work is a separate question, and the tool page is where to answer it.

How does StackZen rank AI Writing tools?

By a computed score, not an opinion. Four published, checkable things go in — documented capabilities, whether prices are public, whether there is a free way in, and the breadth of the integration list — and the order above is the result, recomputed whenever the data changes. StackZen does not test these tools, and says so; nothing in the formula is a commission rate, and paying us cannot move a tool up this page.