ATAI ‑ AltText.ai AI Alt Text vs Lumi: AI Alt Text & SEO
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 22, 2026 for ATAI, Oct 31, 2026 for Lumi.
The short answer
- On the Shopify App Store: ATAI 4.5 from 142 reviews and Lumi 5.0 from 2 reviews.
- Only Lumi lists a free plan. Paid plans start at $5/month for ATAI and $19/month for Lumi.
- ATAI lists 11 features Lumi’s listing doesn’t mention, including Analytics, AODA, Audits.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Pay as you go
- · Purchase additional credits as needed
- · Your first 25 images are totally free
Bronze Plan
- · 100 images / month
- · Purchase additional credits as needed
- · Unused credits roll over
- · Your first 25 images are totally free
Silver Plan
- · 500 images / month
- · Purchase additional credits as needed
- · Unused credits roll over
- · Your first 25 images are totally free
Gold Plan
- · 2000 images / month
- · Purchase additional credits as needed
- · Unused credits roll over
- · Your first 25 images are totally free
Free
- · 10-page accessibility scan every 30 days
- · 100 AI credits each month
- · Alt text, descriptions, and SEO fields
- · Gap scan of your top 100 products
- · Product categories and category fields
- · Restore saved values Lumi replaced
Maintain
- · 500 AI credits every month
- · Auto-drafts for new products and images
- · Automatic 200-page scan every 14 days
- · Drafts in your brand voice, 17 languages
- · Everything in Free, plus
- · Scan history, trends, and issue alerts
Cleanup
- · 3,000 AI credits to use within 90 days
- · Drafts in your brand voice, 17 languages
- · Everything in Free, plus
- · Export a record of approved updates
- · No cap on products per run
- · One 100-page accessibility scan
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAltText.ai generates accurate, SEO-optimized alt text for the product and blog images in your store. It reads your product name, brand, and description, then writes natural alt text that search engines index and screen readers announce, supporting ADA, AODA, EAA, and WCAG requirements.
Blank alt text, missing SEO titles, thin descriptions, and uncategorized products make your catalog harder to find and harder to shop, and fixing them one product at a time is slow. Lumi scans your catalog, then drafts fixes from your product photos and details, including a Shopify category with fields like color and material. Good content stays untouched. You approve what goes live, and your theme is never changed.
- Works automatically on each product image you create or update.
- Bulk update all/any of your existing products or blog images at once.
- Uses keywords from your product name, brand, and description in the alt text.
- Fully customizable settings to control when alt text is added.
- Vision-AI ALT Text: ADA & EAA Compliant Image Descriptions
- SEO-Optimized Product Descriptions & Meta Tags with Custom Brand Voice
- Bulk Processing: Generate Content for 500+ Products Simultaneously
- Human-Verified Workflow: AI-Accelerated with Full Merchant Control
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  ATAI |  Lumi |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | ATAI | Lumi |
|---|---|---|
| App Store rating | 4.5 ★ | 5.0 ★(ahead) |
| App Store reviews | 142(ahead) | 2 |
| New reviews, 28 days | 1 | Not enough data |
| Reviewers a year or more in | 0% | Not enough data |
FAQ
ATAI and Lumi: common questions
- Is ATAI or Lumi cheaper?
- Only Lumi lists a free plan. Paid plans start at $5/month for ATAI and $19/month for Lumi. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, ATAI or Lumi?
- On the Shopify App Store: ATAI 4.5 from 142 reviews and Lumi 5.0 from 2 reviews.
- What features does each app list that the other doesn’t?
- ATAI lists 11 the others don’t mention, such as Analytics, AODA, Audits, EAA. Lumi lists 3 the others don’t mention, such as Content analysis, Keyword analysis, Metadata optimization. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 22, 2026 for ATAI, Oct 31, 2026 for Lumi; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 22, 2026 for ATAI, Oct 31, 2026 for Lumi. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.