Inline Related Posts vs SPAI – Similar posts AI Plugin (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
SPAI – Similar posts AI Plugin
10 active installs
Free
Quick Verdict
As of April 2026, Inline Related Posts has a higher user rating (4.3/5 from 77 reviews) and leads in active installations (100K+ vs 10). Both are free WordPress plugins. Inline Related Posts has accumulated 1.7M+ total downloads while SPAI – Similar posts AI Plugin has 2.6K+.
Detailed Comparison
| Metric | Inline Related Posts | SPAI – Similar posts AI Plugin | |
|---|---|---|---|
| Rating | 4.3/5 | ◄ | 3/5 |
| Total Reviews | 77 | ◄ | 2 |
| Active Installs | 100K+ | ◄ | 10 |
| Total Downloads | 1.7M+ | ◄ | 2.6K+ |
| Support Resolution | 0% | N/A | |
| Last Updated | 9 months ago | ◄ | 11 months ago |
| First Released | 2015 | 2021 | |
| Age | 11 years | 5 years | |
| WP Requires | 3.6.0+ | 5.0+ | |
| PHP Requires | 5.6+ | 7.4+ | |
| Business Model | Free | Free | |
| Latest Version | 3.9.0 | 1.8.1 |
Rating Breakdown
Inline Related Posts
SPAI – Similar posts AI Plugin
Download Trends
Recent Reviews
Inline Related Posts Reviews
Very nice but expensive
Hi. I trusted and buyed the pro plugin, was very good, i liked but to expensive for small blogs.. Can’t pay so much for a year again…
Security Issues
As you can see on patchstack.com/database/wordpress/plugin/intelly-related-posts/vulnerability/wordpress-inline-related-posts-3-8-0-cross-site-scripting-xss-vulnerability?_a_id=350 Plugin not updated,
set and forget
I love this plugin, set and forget.
SPAI – Similar posts AI Plugin Reviews
No reviews yet
More Plugins Worth Comparing
Top alternatives in the same category as Inline Related Posts and SPAI – Similar posts AI Plugin
The best WordPress plugin for displaying related posts. Simple and flexible, with a powerful proven algorithm and inbuilt caching.
Keep visitors on your site longer with intelligent, fast-loading, contextually related posts. Block, shortcode, custom post type and widget ready.
The best WordPress plugin for related posts. Simple, flexible, powerful algorithm, and built-in caching. Fully setup with only 1 click!
Internal Linking of Related Contents allows you to automatically insert inline related posts within your WordPress articles.
Frequently Asked Questions
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.