Altagonist vs Caseo

Altagonist is a WordPress plugin that creates image alt text using image metadata and page content. It can process hundreds of images at once and supports 70 languages. Its three quality levels draw on different amounts of context: Lite uses image metadata, Medium also uses page excerpts, and High uses full page content. Each image costs one, two, or three credits respectively. You can turn on automatic generation for uploaded images, choose a default language and quality level, and edit generated tags in the WordPress media library. JPEG, PNG, GIF, and WebP work natively; SVG, AVIF, TIFF, and BMP are converted automatically. The documentation says images are processed in real time and immediately discarded rather than stored. All plans support multiple WordPress sites, with credits shared among sites on the same license key. The Free plan costs nothing and includes 50 monthly credits. Personal, Pro, and Agency are listed as Coming Soon at €5 a month, €12 a month, and €29 a month, respectively. Unused credits do not roll over.

Caseo is a Shopify app for generating image alt text and SEO content for online stores. Its AI uses product images together with product data to create alt text for screen readers and search engines. It can bulk-generate meta titles and descriptions for products, collections, and blog posts, and generate or revise product descriptions to match a store’s tone. Generated material can be reviewed and edited individually, or checked in bulk before it is applied. Each image alt text, meta title, meta description, or product description uses one credit, deducted when generation happens. Caseo lists English, Spanish, French, Portuguese, Italian, German, Dutch, and Lithuanian. It writes fields through the Shopify Admin API and says it does not alter theme code or affect page-load speed. The free plan includes 50 credits, a full store scan, and all features unlocked within a 15-day trial window, with no card required. One-time credit packages start at 9.00 USD; purchased credits remain valid for 365 days. A 30-day money-back guarantee applies to unused credits.