ContentPen
AI-Powered SEO Content Writing Assistant
Use with caution
ContentPen works, but test it on a staging site before relying on it in 2026. It runs on 300+ sites, is rated 5/5 and was last updated 3 months ago, and scores 60/100 on our health check.
- Momentum — downloads up 33.5% vs the previous 30 days
- Small user base (300+ active installs)
- Very few reviews so far
- Only tested up to WordPress 6.9 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where ContentPen stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| AI | >100 |
| blogging | #24 |
| content marketing | >100 |
| content writing | #34 |
| seo | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 5 from 1 reviews
About ContentPen
From the official readme · v1.1.0Description
ContentPen is an AI-powered content writing assistant designed to help businesses create, optimize, and publish SEO-friendly blog posts at scale. By combining deep research with your brand’s unique voice, ContentPen crafts high-impact articles that outperform your competition.
Features
- Brand Knowledge: AI-powered analysis of your brand voice, unique selling points, target audience, and competitors.
- Keyword and Title Selection: Automated title suggestions and search intent alignment for SEO success.
- Deep Topic Research: In-depth SERP analysis and content gap identification.
- Optimized Blog Outline: Research-backed article structure with a semantic SEO approach.
- High-Quality First Draft: Collaborative AI agents generating comprehensive content.
- Quality Review and Optimization: SEO optimization to enhance article performance.
- Final Enhancements: Strategic linking and automated images for appealing blogs.
- Effortless Publishing: Seamless integration with WordPress and other CMS platforms (coming soon).
Installation
- Upload the plugin files to the
/wp-content/plugins/contentpendirectory, or install the plugin through the WordPress plugins screen directly. - Activate the plugin through the ‘Plugins’ screen in WordPress
- Use the Settings->ContentPen screen to configure the plugin
- Enter your API key from https://app.contentpen.ai to start using the plugin
Frequently asked questions
What is ContentPen?
ContentPen is an AI-powered content writing assistant that helps businesses create, optimize, and publish SEO-friendly blog posts at scale.
How does ContentPen work?
ContentPen combines deep research with your brand’s unique voice to craft high-impact, SEO-optimized articles. It utilizes multiple AI agents to handle tasks like brand analysis, keyword selection, topic research, content drafting, and optimization.
Do I need an API key?
Yes, you need an API key to use ContentPen. You can get one by signing up at https://app.contentpen.ai
Changelog
Adds a post lookup-by-slug endpoint so ContentPen can import existing articles.
1.1.0
- Added GET /posts/lookup?slug={slug} endpoint so ContentPen can import an existing post’s title/content/status by slug (including drafts and unpublished posts).
- Registered on its own path rather than as GET on /posts, to avoid the route conflict fixed in 1.0.10.
1.0.14
- Added post excerpt support — the post_excerpt field is now accepted on both create and update endpoints.
1.0.13
- Fixed duplicate media uploads when “Save media in WordPress” is enabled — inline images already managed by the plugin are no longer re-imported.
1.0.12
- Fixed featured image publishing to reuse the uploaded media attachment instead of creating duplicate thumbnails.
- Fixed featured image metadata syncing so the active thumbnail attachment keeps the expected title and alt text.
- Fixed inline post image imports to preserve image alt text and use source image metadata for attachment titles.
1.0.11
- Added support for Rank Math and All in One SEO plugins
1.0.10
- Removed unused GET /posts endpoint that caused route conflicts in some wordpress versions.
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
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FAQ
ContentPen: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 1, 2026
Is ContentPen free?
Yes. ContentPen is free to download and use from the official WordPress.org plugin directory.
Is ContentPen safe to use in 2026?
ContentPen works, but test it on a staging site before relying on it in 2026. It runs on 300+ sites, is rated 5/5 and was last updated 3 months ago, and scores 60/100 on our health check.
How many websites use ContentPen?
ContentPen is active on 300+ WordPress websites and has been downloaded 4,492 times since it launched in April 2025. It was downloaded 582 times in the last 30 days.
Does ContentPen work with WordPress 7.1?
ContentPen is officially tested up to WordPress 6.9.9, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does ContentPen need?
ContentPen requires PHP 7.4 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was ContentPen last updated?
The latest version, 1.1.0, was released on July 16, 2026 (3 months ago).
Who makes ContentPen?
ContentPen is developed and maintained by contentpen.
What are the best alternatives to ContentPen?
The most popular alternatives to ContentPen are Elementor Website Builder (10M+ installs), All in One SEO (2M+ installs) and AI Agent by SiteGround (1M+ installs).
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