llms.txt went from an obscure proposal to a line item in every Shopify SEO app’s pricing table. Here is an honest comparison of every way to get one: the apps that charge $29–$99/mo for it, the ones that include it free, the free web generators — and what Shopify’s own auto-generated llms.txt changed in May 2026.
Pricing and review counts below were checked in August 2026 — confirm on each listing before installing.
llms.txt is a plain Markdown file served at yourstore.com/llms.txt. It gives AI systems — ChatGPT, Claude, Perplexity, and the shopping agents built on them — a curated map of your most important pages, so they don’t have to reconstruct your store from navigation menus and JavaScript. It was proposed by Jeremy Howard of Answer.AI in September 2024.
Honest caveat before you spend money on it: llms.txt is a proposed standard. No standards body has ratified it, and the major AI companies have not officially confirmed their crawlers consume it. The case for shipping one anyway is that it costs minutes, it can’t hurt, and the platforms are converging on it — including, as of this year, Shopify itself.
In April–May 2026, Shopify quietly rolled out auto-generated /llms.txt, /llms-full.txt, and /agents.md files to every store as part of its agentic-commerce push, then in late May added the ability to customize them through theme Liquid templates. A detailed merchant walkthrough of the rollout is in Craftshift’s guide.
Two practical consequences. First, your store already has an llms.txt — open yourstore.com/llms.txt right now and look at it. Second, the question the apps below now answer is no longer “can you create the file” but “is the machine-built default good enough?” The auto-generated file is built from your catalog, not curated: it doesn’t know which collections matter, which policies agents ask about, or what makes your products the right answer to a shopper’s question. That curation — plus keeping the file current as your catalog changes — is what you’re actually buying.
Every established app here has real strengths and thousands of merchants who like it — the differences are where llms.txt sits in the pricing ladder and what else you get. All pricing as of August 2026.
| App | Where llms.txt sits | Pricing (Aug 2026) | App Store rating (Aug 2026) |
|---|---|---|---|
| Hatchloop that’s us | Free plan — one-click llms.txt + schema; free web generator available today | Free plan; Starter $12/mo | New — launching on the Shopify App Store (in review), no reviews yet |
| StoreSEO | Free Forever plan (25-product limit) | Free / $14.99 / $39.99 / $249.99/mo, by product count | 5.0 · 675 reviews |
| Tapita AI SEO | Leads its listing with llms.txt for ChatGPT/Gemini (AEO/GEO) | Free / $9.99 / $39.99/mo | 5.0 · 2,461 reviews |
| TinySEO | Advanced plan (llms.txt + agents.md + IndexNow) | Advanced $23/mo | — |
| SEOWILL (ex-SEOAnt) | llms.txt generator is paid-only | Free / $29.99 / $59.99/mo | 4.8 · 1,722 reviews |
| Booster AI SEO + AEO | Paid tiers (“AI search prep” + llms.txt) | Free / $39 / $69/mo | 4.8 · 5,261 reviews |
| SearchPie | AEO features on the Enterprise tier | Free / $39 / $99/mo | 4.9 · 2,345 reviews |
| SEO On: AEO optimizer llms.txt | The whole app is a dedicated llms.txt/AEO optimizer | See listing | ~5.0 · 279 reviews |
Booster, SearchPie, Tapita, SEOWILL, and StoreSEO all carry the Built for Shopify badge. Review counts and prices move — treat this table as a snapshot, not gospel.
The category’s biggest review base (5,261 at 4.8) and famously responsive support. A full SEO autopilot suite — structured data, sitemap submission, image compression — where llms.txt is one feature among many on the $39–$69/mo paid tiers. A strong pick if you want one app to handle everything and don’t mind paying for the bundle.
A broad, mature suite (schema, speed, 404 handling) with 24/7 support and a 4.9 rating over 2,345 reviews. Its AEO feature set sits on the $99/mo Enterprise tier — the most expensive route to llms.txt on this page, but you’re buying a lot of app around it.
The most generous free plan among the incumbents and the cheapest paid entry at $9.99/mo, with a perfect 5.0 across 2,461 reviews and 24/7 chat even for free users. Its listing now leads with llms.txt for ChatGPT and Gemini. If you want an inexpensive all-round SEO app from an established vendor, Tapita is hard to argue with.
Gives away a lot free — full-site audit, AI blog generation, keyword planner, GSC integration — and holds a 4.8 across 1,722 reviews. The llms.txt generator specifically is paid-only (Pro from $29.99/mo), alongside JSON-LD structured data and auto-fixes.
The incumbent closest to our own philosophy: its llms.txt generator is on the Free Forever plan, with clean product-count pricing ($14.99–$249.99/mo) so a small store can genuinely finish for $0. Perfect 5.0 across 675 reviews. The free plan caps at 25 products, so larger catalogs upgrade quickly.
Two focused options. TinySEO bundles llms.txt with agents.md and IndexNow on its $23/mo Advanced plan (pricing per Craftshift’s 2026 roundup). SEO On is a dedicated llms.txt/AEO optimizer with 279 reviews near 5.0 — proof there’s real merchant demand for llms.txt as a standalone job.
If you just want the file, several web tools generate one free from your store URL: our own Hatchloop llms.txt generator, SEOmator (up to 5,000 pages), SiteSpeakAI, and llms-txt.io (which also produces llms-full.txt).
The catch on Shopify: you can’t upload files to your domain root, and since May 2026 Shopify’s native llms.txt occupies that URL. To serve a generated file you either customize the theme’s Liquid templates for /llms.txt and /agents.md, or upload the file to Shopify’s CDN and redirect to it. Perfectly doable if you’re comfortable in your theme code — and exactly the step the apps above automate.
Hatchloop is the new entrant on this page — no App Store reviews yet, because our Shopify app is still in App Store review. What we have is a different starting point: we come at llms.txt from AI visibility first, not classic SEO with AEO bolted on.
Available today, free and with no signup: the 0–100 AI-visibility checker, which scores how ChatGPT, Perplexity, and Google AI Overviews read your store, and the llms.txt generator. The Hatchloop app — AI product descriptions, one-click schema, and one-click llms.txt — is launching on the Shopify App Store with a free plan and a $12/mo Starter tier. Our position is simple: llms.txt shouldn’t be a $29–$99/mo upsell, so on Hatchloop it’s free.
llms.txt is a plain Markdown file served at yourstore.com/llms.txt that gives AI systems like ChatGPT, Claude, and Perplexity a curated map of your most important pages. It was proposed by Jeremy Howard of Answer.AI in September 2024. It is a proposed standard, not a ratified one, and no major AI company has formally committed to fetching it — but it costs minutes to add, Shopify itself now ships one on every store, and a curated version represents your store better than the auto-generated default.
Yes. In April–May 2026 Shopify rolled out auto-generated /llms.txt, /llms-full.txt, and /agents.md files to every store as part of its agentic-commerce push, and in late May 2026 it added the ability to customize them through theme Liquid templates. So the question apps and generators now answer is not whether you can have an llms.txt — you already do — but whether the machine-built default describes your store well, and whether you want it curated and kept current.
As of August 2026, most established Shopify SEO apps gate llms.txt or their AEO features behind paid tiers of roughly $23–$99 per month: SEOWILL’s llms.txt generator is paid-only (Pro from $29.99/mo), Booster includes llms.txt in its paid tiers ($39–$69/mo), SearchPie’s AEO features sit on its $99/mo Enterprise tier, and TinySEO’s llms.txt ships on its $23/mo Advanced plan. StoreSEO includes an llms.txt generator on its free plan (limited to 25 products), and Hatchloop’s llms.txt tools are free — as a web generator today and in the free plan of its Shopify app launching on the App Store.
Honestly: it is one signal, not a magic switch. llms.txt is a proposed standard and the major AI companies have not officially confirmed their crawlers consume it normatively. What is verifiable is direction: Shopify shipped native llms.txt and agents.md files to every store in 2026 to support agentic commerce. Treat llms.txt as cheap insurance alongside the signals with stronger evidence — structured data, crawlable pages, substantive product content, and answer-style FAQ content.
Before paying any app on this page, run the free check — it reads your store the way AI engines do, scores it 0–100, and shows whether llms.txt is even your biggest gap. No signup, about a minute.