Rank Math vs Semrush: Best Content AI Comparison Of 2025

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When it comes to optimizing content for search engines, two major tools stand out: Rank Math and Semrush. Both Rank Math vs Semrush offer AI-powered features to enhance content optimization, but only one excels in terms of WordPress content generation. 

In this article, we will compare Rank Math Content AI vs Semrush ContentShake AI in the context of their Content AI features. Thus, finding the best WordPress AI content generation tool between the two.

Rank Math vs Semrush Introduction

Rank Math

💲 Pricing:

• Starter: $4.99/month
• Creator: $8.99/month
• Expert: $14.99/month

Rank Math is the #1 WordPress SEO plugin that provides a Content AI tool with free 750 monthly credits. It is the best performing SEO plugin for WordPress and a top alternative to All in One SEO plugin. The Rank Math Content AI tool helps users optimize their content with AI-driven keyword suggestions, readability improvements, and competitive insights. 

Semrush

💲 Pricing:

• $60/mo

Semrush is an all-in-one SEO tool offering a 7-day free trial of ContentShake AI extending the boundaries of generating content faster. It provides keyword recommendations, readability scores, tone-of-voice suggestions, and a plagiarism checker feature.

Semrush vs Rank Math: Content AI Features Comparison Table

Rank Math Content AI Features

Rank Math’s Content AI fully integrates with WordPress. Thus, it is designed to help WordPress users optimize their content effortlessly with one-click. Its key features include:

• AI-Powered Keyword Suggestions: Provides relevant keyword recommendations based on search intent and competition.
• Content Readability Analysis: Evaluates content readability and offers suggestions to improve structure and clarity. This includes the number of headings such as H1, H2, H3, H4, and H5. Also suggests the number of times the focus keyword should appear in the content.
• Internal and External Link Suggestions: Recommends authoritative external links and related internal links to boost SEO results.
• Text Generation: Helps you generate a blog post title, SEO meta title & description, paragraphs, fix grammatical mistakes, add pros and cons, etc.
• Language Selection: Supports 25+ languages including English, Japanese, Chinese, German, Arabic, French, and more.
• Number of Outputs: For every query, you can generate up to 5 outputs. This helps you choose the best result and regenerate if not satisfied.
• Content Score: Provides an AI-driven score out of 100 based on keyword usage, readability, and SEO factors. Thus helping you strategize your content for not only a high score, but also boosting content visibility on SERPs.

Semrush ContentShake AI Features

Semrush offers ContentShake AI, a powerful AI-driven content creation tool with a 7-day free trial. Its key features include:

• Free AI writing tools: Whether you want to write a blog post, paraphrase, regenerate sentence, or post on social media, Semrush does it all.
• AI-Powered Suggestions: Generates trending topics and outlines based on industry research. Provides SEO suggestions like adding alt text to your images.
• SEO Writing Assistant: Optimizes content with AI-driven suggestions on keywords, tone of voice, and readability. You can download the Semrush SEO writing assistant plugin for WordPress.
• Plagiarism Checker: Ensures content originality by detecting duplicate & copied content. You can further use AI content detector tools to check plagiarism like Originality.ai content detector.
• Localized content ideas: Increase your chance of ranking higher by targeting your content based on location or language.
• AI-Based Content Generation: Automatically generates SEO-optimized content 12 times faster than manual article generation. Anyone can access the Semrush ContentShake AI instantly with no credit card required along with a 7-day free trial.

Pros and Cons

Rank Math Content AI

👍 Pros:

• Seamless integration with WordPress.
• Free 750 credits per month for lifetime.
• AI-driven keyword and content recommendations.

👎 Cons:

• No chrome extension.
• No plagiarism checker.

Semrush ContentShake AI

👍 Pros:

• Free chrom extension.
• Built-in plagiarism checker.
• Free blog title, paragraph, summarizer, and text generation.

👎 Cons:

• No direct WordPress integration.
• Only one plan, which is pricier than Rank Math.

Conclusion

I have tested both the tools and found Rank Math excels in terms of more features and is more cost-effective than Semrush.

If you are a WordPress user looking for a cost-effective way to optimize content with AI, Rank Math’s Content AI is a great choice. However, if you need built-in plagiarism detection and advanced SEO insights, Semrush’s ContentShake AI offers a more robust solution, albeit at a higher price.

Overall, Rank Math is the best SEO plugin for WordPress users, and it has advanced content writing and optimizing features.

FAQs | Rank Math vs Semrush