I Tested 7 Best SEO Tools for Content Writing. Here’s My Favorite for 2026

My name is Suresh, and I have over a decade of experience in SEO.

Notably, I led Marketing at Edenred (a $4.05B company) and then built my blog to 10K visitors per month from SEO and content marketing all by myself.

I have also worked with several SaaS companies to help them grow their SEO-driven revenue.

Over the last 4 years, I have collected the best SEO tools for content writing and used them for my own content creation.

In this AISO Blog guide, I reveal them all to you.

It is safe to say I have tested nearly every SEO tool for content writing on the market.

And I am always on the lookout for the newest tools that can help me write better, faster, and smarter.

In this post, I am breaking down the top 7 SEO tools for writing in 2026 so you can pick what is best for your specific needs.

To make it practical, I have included an ease-of-use score (beginner, intermediate, or advanced) for each tool.

1. Frase

Category: Content research and optimization
Best for: Writers who want SERP-driven briefs and AI drafting
Ease of use: Intermediate
Pricing: Starts at $45 per month + 7-day free trial
Website: https://www.frase.io/

Frase the best seo tool for content writing review at AISO Blog

Founded in 2016, Frase is an SEO and content optimization platform that combines SERP research, AI writing, and content briefs in one workflow.

This tool is designed to streamline the research, creation, and optimization of content, with a strong focus on both traditional search engine rankings (SEO) and generative engine optimization (GEO) for AI search engines.

How Frase Works

  • Content Briefs: Automatically generates outlines based on top-ranking pages.
  • AI Writing: Helps overcome writer’s block and speed up drafting.
  • Optimization: Provides keyword suggestions, headings, and word count targets.
  • Integrations: Works with Google Docs and WordPress.

Key Features and Capabilities

AI-Powered Content Generation: Frase can generate SEO-optimized content, including articles, blog posts, and landing pages.

SERP Analysis & Competitor Research: You can analyze the top 20 search results to identify key themes, questions, and content gaps.

Content Optimization (SEO & GEO): The platform provides a “Content Score” that measures how well content is optimized for Google and AI platforms.

Automated Outline Generation: Frase can create AI-generated outlines.

Content Analytics & Updates: It connects with Google Search Console to identify underperforming content.

Multilingual Support: Content creation and optimization are supported in over 100 languages.

Frase Workflow: From Query to Article at AISO Blog

Frase Workflow: From Query to Article

  1. Research: Input a query, and Frase analyzes the top 20 competitors.
  2. Outline: Generate a structured outline based on competitor data and user questions.
  3. Write: Use the AI writer to create content or expand on existing topics.
  4. Optimize: Edit and improve the content score in real-time.

Pricing Plans

Frase pricing plans at AISO Blog
  1. Trial Plan ($0/month): 7-day free trial. No credit card required.
  2. Starter Plan ($49/month) or $39/month (billed annually)
  3. Professional Plan ($129/month) or $103/month (billed annually)
  4. Scale Plan ($299/month) or $239/month (billed annually)
  5. Enterprise Plan (custom pricing)

Check Frase Pricing Herehttps://www.frase.io/pricing/

Pros

  • Saves time with automated briefs.
  • Strong AI writing features.
  • Easy integration with existing workflows.

Cons

  • Limited technical SEO features.
  • Best suited for content marketers rather than technical SEOs.

User Ratings

Frase is useful for content marketing teams and agencies that need to produce high-quality, research-intensive content, providing a faster alternative to traditional SEO research.

Try Frase.io

2. Scalenut

Category: AI content creation and SEO optimization
Best for: Content marketers and agencies needing guided workflows
Ease of use: Beginner to intermediate
Pricing: Starts at $39 per month + Free trial plan
Website: https://scalenut.com/

Scalenut SEO tool for writing review at AISO Blog

Founded in 2021, Scalenut is an all-in-one platform for AI writing and SEO planning.

This platform is designed to streamline the entire content lifecycle, from research and planning to writing and optimization.

It aims to help marketers create high-quality, search-engine-friendly content that ranks well on Google and is optimized for AI-powered search engines (Generative Engine Optimization or GEO).

How Scalenut Works

  • Cruise Mode: Generates a first draft quickly.
  • Topic Clusters: Helps plan content around search intent.
  • SERP Analyzer: Provides competitor insights and NLP-based keyword suggestions.

Key Features for Content Writing and SEO

Cruise Mode (AI Writer): Generates long-form, SEO-optimized blog posts in minutes based on provided keywords, enabling faster content production.

Content Optimizer: Analyzes top-ranking pages for a keyword and provides a real-time “SEO Score” (or GEO score), suggesting improvements for keyword density, content gaps, and structure.

Keyword Planner: Identifies relevant topics, clusters keywords into thematic groups, and maps out a content strategy to build topical authority.

“Fix It” & Auto-Optimizer: Automates on-page SEO tasks, such as adding missing NLP (Natural Language Processing) keywords, improving meta tags, and adjusting headings.

AI Detector & Humanizer: Scans content for AI-generated patterns and helps rewrite them to sound more natural and human.

Traffic Analyzer: Connects with Google Search Console to track the performance of your published content, including clicks and impressions.

40+ AI Templates: Offers specialized templates for short-form content, such as ad copies, meta descriptions, and social media posts.

Pricing Plans

Scalenut pricing plans at AISO Blog
  1. Trial Plan ($0/month): 7-day free trial. No credit card required.
  2. Essential Max ($49/month) or $235/year (billed annually)
  3. Growth Max Plan ($103/month) or $494/year (billed annually)
  4. Pro Max Plan ($193/month) or $926/year (billed annually)

Check Scalenut Pricing Herehttps://www.scalenut.com/pricing

Pros

  • Affordable compared to Frase.
  • Cruise Mode saves time for beginners.
  • Strong integrations with SEO tools.

Cons

  • AI drafts often need manual editing.
  • Learning curve for advanced features.

User Ratings

Scalenut is best suited for content marketers, SEO professionals, and marketing agencies aiming to boost organic traffic through data-driven, optimized content.

Try Scalenut.com

3. KoalaWriter

Category: AI bulk content generation and SEO optimization
Best for: Bloggers and agencies producing content at scale
Ease of use: Beginner to intermediate
Pricing: Starts at $9 per month
Website: https://koala.sh/

Koalawriter seo writing tool review on AISO Blog

Launched in 2022, KoalaWriter is known for affordability and speed.

This tool is designed specifically for SEO (Search Engine Optimization) and is aimed at bloggers, affiliate marketers, and content creators who need to generate long-form, publish-ready articles quickly.

It distinguishes itself from general AI writers like ChatGPT by focusing on real-time data, SERP analysis, and one-click publishing to platforms like WordPress.

How KoalaWriter Works

  • Keyword-driven outlines: Builds structured drafts from SERP analysis.
  • Bulk mode: Generates multiple articles at once.
  • SEO optimization: Suggests internal links and keyword placements.
  • AI models: Uses GPT-4 and GPT-5 for high-quality writing.

Key Features and Capabilities

One-Click SEO Content: Generates full-length, structured articles (blog posts, product reviews, listicles) that are optimized for search engines.

Real-Time Data Access: Uses up-to-date search results to create factually relevant content, reducing the need for extensive research.

AI-Powered SEO Optimization: Analyzes the top-ranking search results for a target keyword and automatically includes relevant entities and semantic keywords to help your content rank.

Advanced Models: Utilizes high-quality models including GPT-4o and Claude 4.5 Sonnet.

Automation Tools:

  • Automatic Image Generation: Creates AI-generated images, with commercial usage rights, to accompany posts.
  • YouTube Video Embedding: Automatically inserts relevant YouTube videos to improve engagement.
  • Internal Linking: Automatically adds contextual internal links based on your site structure.

Amazon Affiliate Features: Generates product roundups and reviews using live Amazon data (pricing, reviews, specs).

Integrations: Offers direct publishing to WordPress, Shopify, Webflow, or Ghost, along with Google Sheets integration and API access. 

Real Business Use Cases

Affiliate Marketers & Product Reviewers: Creating in-depth product review posts and comparison articles.

Niche Site Owners: Scaling content production with bulk, optimized blog posts.

Content Agencies: Generating high-quality drafts with minimal editing. 

Pricing Plans

KoalaWriter pricing plans on AISO Blog

KoalaWriter operates on a subscription-based credit system, with plans ranging from $9 per month (Essentials) to $500 per month (Advanced), depending on word-count requirements. A free trial is available, providing 5,000 words and 25 chat messages without requiring a credit card.

Check Koala Pricing Here: https://koala.sh/pricing

Pros

  • Very affordable entry-level pricing.
  • Bulk mode saves time for agencies.
  • Real-time SERP integration.

Cons

  • Content may need manual editing.
  • Limited technical SEO features.

Ratings

KoalaWriter is considered better for SEO because it produces “publish-ready” content with proper formatting, headers, and SEO optimization in one click, whereas ChatGPT typically requires extensive prompting and formatting.

Try KoalaWriter

4. NeuronWriter

Category: Semantic SEO optimization
Best for: Bloggers and marketers focused on semantic SEO
Ease of use: Intermediate
Pricing: $19–117 per month
Website: https://neuronwriter.com

NeuronWriter SEO content writing tool on AISO Blog

Founded in 2020, NeuronWriter specializes in semantic SEO and NLP-driven optimization.

This AI-powered content optimization and writing tool is designed to improve search engine rankings by analyzing top-performing competitor content using Natural Language Processing (NLP).

It assists users in creating SEO-friendly articles, blog posts, and landing pages by suggesting relevant keywords, structuring content, and generating AI-based drafts.

How NeuronWriter Works

  • SERP Analysis: Identifies competitor strategies.
  • NLP Recommendations: Suggests semantic keywords.
  • Content Scores: Grades drafts for optimization.

Key features of NeuronWriter for content writing include:

Semantic SEO & NLP Analysis: Analyzes top Google search results to identify necessary terms, topics, and competitor strategies for higher rankings.

AI Content Generator: Produces full articles or sections using GPT-based models, offering templates and “Autoinsert” features for key terms to speed up writing.

Content Editor & Scoring: Provides a real-time optimization score (0-100) based on NLP recommendations, readability, and keyword usage to ensure comprehensive, high-quality, and well-structured content.

Competitor Analysis: Identifies top competitors for specific search queries and provides insights into their content structure and keyword strategies.

Integrated Tools: Includes a plagiarism checker to ensure content originality and an AI image generator to create relevant visual elements for blog posts. 

Pros

  • Affordable compared to Frase.
  • Strong semantic SEO features.
  • Easy workflow for optimization.

Cons

  • AI writing is generic sometimes.
  • Performance slows during peak times.

Ratings

NeuronWriter is widely used by content creators, marketers, and bloggers to streamline the content creation process, from brainstorming to producing optimized content, often acting as a more affordable alternative to AI SEO tools like Surfer SEO.

Try NeuronWriter.com

5. Rankability

Category: NLP-powered SEO suite
Best for: Advanced SEOs and agencies needing NLP-driven insights
Ease of use: Advanced
Pricing: Starts at $129 per month
Website: https://www.rankability.com/

Rankability Content Writing SEO Tool on AISO Blog

Rankability leverages IBM Watson and Google NLP for highly accurate keyword recommendations.

Designed specifically to help content teams, writers and agencies research, create, optimise and monitor content for higher search rankings, it places a strong focus on utilising advanced AI to match search intent.

How Rankability Works

  • Keyword Intelligence: Uses NLP for precise targeting.
  • Content Scoring: Real-time optimization feedback.
  • Coaching Calls: Monthly sessions with SEO experts.

Key Features and Capabilities:

Content Optimizer: The core feature that analyzes content in real-time, offering actionable, score-based feedback based on NLP (Natural Language Processing) to ensure topic coverage.

AI Content Briefs & Outlines: Generates comprehensive, data-driven briefs in seconds to guide writers, reducing the time spent on manual research.

AI-Powered Writing Assistant: Built-in tools allow for editing, grammar checking, and tone adjustment directly within the editor.

Content Monitoring: Tracks the daily relevance and performance of content against top-ranking competitors to ensure it stays competitive.

Goal-Oriented Keyword Research: Provides data on keywords to build strategies focused on ranking.

Support for Diverse Content Types: Suitable for creating local landing pages, e-commerce category pages, and guides.

Pros

  • Cutting-edge NLP analysis.
  • Coaching adds human expertise.
  • Strong enterprise features.

Cons

  • Higher pricing than alternatives.
  • Steeper learning curve.

Rankability vs. Competitors:

Rankability vs. Surfer SEO: While Surfer is an all-in-one, data-driven tool, Rankability is often considered superior for its focus on content research, planning, and higher-quality NLP data, as well as its simplicity and user-friendly interface.

Rankability vs. Outranking: Both are strong, but Rankability focuses more on topic-first scoring and AI-assisted brief creation, whereas Outranking takes an AI-first, automated approach.

Rankability vs. Frase: Rankability is positioned as a higher-quality, more comprehensive platform for SEO-focused teams compared to Frase.

Ratings

Rankability is designed for agencies and SEO professionals who need a tool that can scale content production without sacrificing quality.

Try Rankability AI

6. Hemingway Editor Plus

Category: Readability and editing tool
Best for: Writers polishing clarity and readability
Ease of use: Beginner
Pricing: Starts at $8.33 per month
Website: https://hemingwayapp.com/

Hemingway Editor on AISO Blog

Hemingway Editor Plus builds on the original free Hemingway Editor by adding AI-powered rewrites, grammar suggestions, and tone adjustments.

This tool is designed to enhance content writing for better SEO by focusing on readability, clarity, and conciseness.

Unlike the standard, free version, “Plus” offers AI-driven, real-time rewriting and advanced grammatical corrections to optimize text structure for search engines and readers.

How Hemingway Works

  • Highlights: Flags passive voice and complex phrasing.
  • AI Rewrites: Suggests clearer alternatives.
  • Target Reading Levels: Tailors content for specific audiences.

Key Features of Hemingway Editor Plus for Content Writing

AI Sentence Rewrites: Automatically rephrases complex or wordy sentences to improve readability.

Advanced Grammar Checker: Identifies and fixes deeper, more complex grammar issues than standard tools.

Tone and Style Adjustment: Allows users to change the tone, length, and formality of their writing (e.g., more casual, more formal, shorter).

Active Voice Conversion: Automatically converts passive voice to active voice, which is often favored for engaging, clear content.

Structure Optimization: Helps in restructuring content by adding headings, bullet points, and bolding to improve scannability, a key, modern SEO metric.

Contextual Suggestions: AI learns from your writing style to provide better, more tailored suggestions.

Pros

  • Very affordable.
  • Great for readability improvements.
  • Offline access available.

Cons

  • Limited SEO features.
  • AI suggestions can be hit-or-miss.

Pricing Plans

Hemingway Editor Plus: Subscription-based, costing roughly $10 to $15 per month (often billed annually).

Free Version: Still available for basic, color-coded,, and manual editing.

Ratings

While Hemingway Editor Plus is exceptional for readability (on-page editing), it is typically used alongside, not in place of, comprehensive SEO tools like Rankability,, or Frase.

Try Hemingway Editor

7. Outranking

Category: AI SEO content optimization
Best for: Teams needing structured workflows and optimization checklists
Ease of use: Intermediate
Pricing: Starts at $79 per month
Website: https://www.outranking.io/

outranking ai seo writing tool on AISO Blog

Outranking.io focuses on structured, research-driven workflows rather than generic AI writing.

This platform is designed to streamline the research, writing, and optimization process for better search rankings.

It focuses on creating data-driven content that adheres to E-E-A-T (Experience, Expertise, Authority, and Trustworthiness) principles.

How Outranking Works

  • SEO Content Checker: Grades drafts for optimization.
  • Keyword Clustering: Helps plan content strategy.
  • Guided Workflows: Step-by-step drafting and rewriting.
  • Automatic Interlinking: Suggests internal links.

Key Features and Capabilities

SERP Analysis & Strategy: Analyzes the top 20 ranking pages to provide insights into competitors, search intent, and necessary content structure.

AI Content Generation: Uses GPT-4 and Google NLP to generate high-quality, factual first drafts based on SERP data.

Real-time Optimization: Scores content based on on-page SEO factors (e.g., keyword density, headings, NLP terms) and provides suggestions to improve ranking potential.

Content Briefs: Creates detailed, data-backed outlines to guide the content creation process.

Originality & E-E-A-T: Provides suggestions to improve content originality, aiming to align with Google’s E-E-A-T standards.

Internal Linking: Features tools for automatic internal link suggestions.

Pricing Plans

  • SEO Writer: $69/month.
  • SEO Wizard: $129/month.
  • Other options: Includes pay-as-you-go, or lower, entry-level plans starting around $19/month for specific features.

Check Pricing for Outranking.io

Pros

  • Strong SERP analysis and entity extraction.
  • Guided workflows reduce guesswork.
  • Good for teams managing multiple projects.

Cons

  • Steep learning curve.
  • Focuses more on optimization than generation.

Ratings

Try Outranking.io

Quick Comparison – 7 Content Writing SEO Tools

ToolBest ForEase of UsePricing (Monthly)Ratings (avg)
FraseWriters needing SERP-driven AIIntermediate$45+4.8
ScalenutGuided content workflowsBeginner–Intermediate$39+4.6
KoalaWriterBloggers, agenciesBeginner–Intermediate$9+4.5
NeuronWriterBloggers, marketers. content creatorsIntermediate$19–1174.5
RankabilityAdvanced SEOs, agenciesAdvanced$129+5
Hemingway PlusEnhances writers clarityBeginner$8.33+4.4
OutrankingTeams needing SEO optimizationIntermediate$79+4.1

What makes these tools stand out?

Each of these SEO content writing tools shines in different ways:

My personal favorites for 2026? Frase and KoalaWriter. Both are affordable.

About Suresh

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