Best AI Plugins for Auto-Translating WordPress Sites (2026)
The interesting question in this category is not which plugin translates best. Machine translation quality converged years ago, and for most language pairs DeepL, Google, and the current crop of large language models produce output a native speaker will describe as “fine, slightly stiff.” The interesting question is who owns the translations afterwards, because the two business models in this market answer that very differently, and only one of them lets you stop paying.
Hosted services translate your pages on their infrastructure and serve them from their servers. Cancel the subscription and your translated site disappears, along with every ranking those pages earned. Self-hosted plugins run the translation once, store the result in your own database, and keep working whether or not you renew. That distinction is worth more than any feature comparison, and it is almost never the headline in these roundups. It is the headline here.
Pricing verified August 2026. This category reprices frequently and several vendors quote in euros; figures below are as listed by each vendor.
Rented translations versus owned translations
Take a 100,000 word site translated into three languages, which is an ordinary mid-size business site with a blog archive. Here is what the two models cost in year one and, more importantly, in year five.
| Tool | Model | Year 1 | Year 5 cumulative | If you stop paying |
|---|---|---|---|---|
| Linguise Start | Hosted | $180 | $900 | Translations stop serving |
| ConveyThis Business | Hosted | $288 | $1,440 | Translations stop serving |
| Weglot Pro | Hosted | €790 | €3,950 | Translations stop serving |
| TranslatePress Business | Self-hosted | €199 | €995 | Site keeps working |
| WPML Multilingual CMS | Self-hosted | €99 | €495 | Site keeps working |
| Polylang Pro | Self-hosted | €99 plus API | ~€350 plus API | Site keeps working |
The gap is stark, and it widens every year. But do not read this as “hosted is a ripoff,” because the hosted services are selling something real: a translation layer that requires no database, no server load, no theme compatibility work, and no thinking about how your page builder stores content. If your site is complex and your team is small, that is worth paying for. Just understand you are renting, and price the exit before you start.
The practical middle path, and what we would recommend for most businesses, is a self-hosted plugin using an AI engine at translation time. You pay once for the machine translation, the output lands in your database, and your ongoing cost is a licence renewal you can skip in a lean year without your German site vanishing.
What to check before you commit
- URL structure. Subdirectories such as /de/ are the safest for SEO because they inherit your domain authority. Subdomains split it, and query parameters are worst of all. Check what the tool actually produces before buying.
- Hreflang output. Non-negotiable. Without correct hreflang tags Google may treat your language versions as duplicate content or serve the wrong one to the wrong country.
- Glossary and do-not-translate lists. Your product names, trademarks, and technical terms must survive translation intact. Every serious tool supports this; verify it works on your actual brand names, especially any that are ordinary words.
- Word counting method. Some vendors count source words, others count translated words across all languages. The same site can produce wildly different bills under each.
- WooCommerce and page builder coverage. Product attributes, variations, checkout strings, and builder-stored content are where translation plugins break. Test a product page, not just a blog post.
- RTL support. If Arabic or Hebrew are on your roadmap, the plugin must handle right-to-left layout, and your theme must too. These are separate problems.
The 8 tools compared
1. TranslatePress
Our overall pick, and the one that best fits how most people actually want to work. Translation happens in a visual editor on the front end: you look at the page, click the text, and fix it. That sounds cosmetic until you have tried to translate a site through a table of extracted strings with no idea which one is the button on the pricing page.
Plans are Personal at €99 for one site with 50,000 AI words, Business at €199 for three sites with 200,000, and Developer at €349 for unlimited sites with 500,000. Crucially the AI word allowance is consumed once at translation time and the output is stored locally, so the numbers are a one-off translation budget rather than a recurring meter. Watch the tier boundary though: the SEO Pack, multiple languages beyond one, and per-language domains all sit in Business and above, so Personal is genuinely a one-extra-language plan. Most businesses need Business at €199.
- Pricing: Personal €99, Business €199, Developer €349 per year
- Model: Self-hosted, translations stored in your database
- Best for: Most business sites wanting control and a sane editing experience
- Watch out for: SEO Pack and multi-language need Business, not Personal
2. WPML
The incumbent, and still the right answer for complicated sites. Nothing here matches its coverage of WooCommerce, custom post types, taxonomies, page builders, and full site editing, and if your site has genuinely awkward content structures, WPML is the tool most likely to already handle yours. Its translation management workflow, with roles for translators and job assignment, is also the only real option if humans will review the machine output.
Multilingual CMS at €99 a year for three production sites is the tier almost everyone needs, since the €39 Blog tier has no AI credits and no WooCommerce support. It includes 90,000 AI translation credits, and the credit arithmetic deserves attention because it is easy to misread: one word into one language costs 2 credits on DeepL or Google, 1 on Azure, and 4 on the premium engine. So 90,000 credits is about 45,000 words into a single language on DeepL, or 15,000 words into three. That is less than the headline suggests, and top-ups are a separate purchase.
- Pricing: Blog €39, CMS €99, Agency €199 per year
- Model: Self-hosted with purchasable AI credits
- Best for: Complex sites, WooCommerce stores, human translation workflows
- Watch out for: 90,000 credits is roughly 45,000 words into one language, not 90,000
3. Polylang Pro
The developer’s choice, and the leanest thing here. Polylang works with WordPress rather than around it, using native taxonomies to relate translated posts, which means less database weight, fewer surprises, and content that remains legible if you ever remove the plugin. For a site where performance matters and a developer is available, it is the most architecturally honest option in the category.
Pro starts at €99 a year excluding VAT with a 50% renewal discount, which makes its five year cost the lowest of any paid option here. Machine translation comes through DeepL and requires your own API key and DeepL account, billed separately by DeepL per character. That is a feature rather than a flaw if you translate a lot, since DeepL’s direct pricing beats every reseller markup in this article, but it does mean two vendors, two invoices, and a setup step that assumes some technical comfort.
- Pricing: From €99 per year ex VAT, 50% renewal discount
- Model: Self-hosted; DeepL billed separately on your own key
- Best for: Performance-sensitive sites with developer support
- Watch out for: Machine translation is not included in the licence
4. Weglot
The most polished product in the category and the fastest to deploy. Add the plugin, enter a key, choose languages, and a working translated site exists within about ten minutes regardless of how your content is stored, because Weglot translates the rendered output rather than the database. Nothing else here is that indifferent to your theme, builder, or plugin stack, and for agencies shipping client sites on deadline that matters enormously.
It is also by a distance the most expensive, and the pricing ladder is steep: Free covers 2,000 words, Starter €150 covers 10,000, Business €290 covers 50,000 in three languages, and Pro €790 covers 200,000 in five. A modest content site with a few years of blog archive lands on Pro without much effort, at which point you are paying €790 every year, forever, for pages you already wrote. Access to professional translators and a solid AI glossary come included, and the product is genuinely excellent. Just run the five year number before signing.
- Pricing: Free 2,000 words; Starter €150; Business €290; Pro €790; Advanced €2,990 per year
- Model: Hosted, translations served from Weglot
- Best for: Agencies and complex stacks needing deployment speed
- Watch out for: Cost escalates sharply with word count; you are renting
5. Linguise
The value pick among hosted services, and by a wide margin. Start is $15 a month for 200,000 translated words, Pro is $25 for 600,000, and Large is $45 for unlimited, with two months free on annual billing. Every tier includes unlimited languages and unlimited translated page views, which is the detail that matters: competitors charge per language, and Linguise does not.
Compare directly against Weglot on the same site and the gap is difficult to justify. Weglot’s €790 Pro tier covers 200,000 words in five languages; Linguise’s $15 Start tier covers 200,000 translated words in unlimited languages. You give up some polish, a smaller ecosystem, and a less mature front-end editor, and the quality of the underlying machine translation is comparable because both are ultimately calling the same class of engine. If you have decided on a hosted service, start here and only move up if something specific is missing.
- Pricing: Start $15, Pro $25, Large $45 per month; two months free annually
- Model: Hosted
- Best for: Anyone who wants the hosted model without Weglot pricing
- Watch out for: Smaller ecosystem; still a rental
6. ConveyThis
Positioned between Weglot and Linguise on both price and polish, with the most granular pricing ladder in the category: eleven tiers from a free 5,000 word plan up to $960 a month, sized by word count and language count together. If your requirements sit awkwardly between two competitors’ tiers, ConveyThis probably has a plan that fits exactly, and that precision can genuinely save money.
Practical numbers: Starter $12 a month covers 30,000 words in one language, Business $24 covers 100,000 in three, and Business+ $40 covers 200,000 in four. That undercuts Weglot substantially while offering a comparable hosted experience. The tradeoff is that pricing on two axes at once, words and languages, makes forecasting harder; adding a fifth language can push you up a tier even though your word count has not changed. Model your actual language roadmap before choosing a plan.
- Pricing: Free 5,000 words; Starter $12; Business $24; Business+ $40 per month and up
- Model: Hosted
- Best for: Sites needing a tier that fits precisely
- Watch out for: Language count and word count both drive the tier
7. GTranslate
Worth understanding precisely because its free tier is the most misunderstood product in this category. GTranslate free gives unlimited machine translation into every language with no word or pageview cap, which sounds impossible until you read what is missing: translated pages are not indexed by search engines and you cannot edit the output. It is a widget that translates for the visitor in front of you, and contributes nothing to international SEO.
The paid tiers fix exactly that. Around $9.99 a month buys bilingual translation with search engine indexing and editable output, roughly $19.99 covers all languages, and adding URL translation and language hosting takes it to about $14.99 and $29.99 respectively. If your goal is international organic traffic you need at minimum the indexed tier with URL translation; anything less is a convenience feature for existing visitors. Judged on that basis the paid plans are competitively priced, and the free plan should be treated as a demo.
- Pricing: Free tier; paid from about $9.99 to $29.99 a month
- Model: Hosted
- Best for: Visitor convenience on a budget, or cheap indexed multilingual
- Watch out for: The free tier is invisible to search engines
8. Loco Translate
A different tool for a different problem, included because people routinely arrive at it expecting the wrong thing. Loco Translate edits the translation files that themes and plugins ship with, letting you fix a mistranslated checkout button or localise an interface string. It does not translate your content, and no amount of configuration will make it do so.
Where it earns its place is alongside everything else on this list. Every multilingual project eventually hits strings that live in a theme or plugin’s language files rather than the database, and no content translation plugin will reach them. Loco Translate is free, handles that job cleanly, and belongs in your stack regardless of which content translation tool you choose. Just do not buy it as an alternative to one.
- Pricing: Free, with an optional paid API service
- Model: Self-hosted, edits theme and plugin language files
- Best for: Fixing interface strings alongside a real translation plugin
- Watch out for: It does not translate your content at all
Comparison table
| Tool | Model | Entry price | Realistic tier | Best for |
|---|---|---|---|---|
| TranslatePress | Self-hosted | €99/yr | Business €199 | Most business sites |
| WPML | Self-hosted | €39/yr | CMS €99 | Complex sites and WooCommerce |
| Polylang Pro | Self-hosted | €99/yr | €99 plus DeepL | Developers, performance |
| Weglot | Hosted | Free | Business €290 to Pro €790 | Speed of deployment |
| Linguise | Hosted | $15/mo | Start $15 | Best hosted value |
| ConveyThis | Hosted | Free | Business $24/mo | Precise tier fit |
| GTranslate | Hosted | Free | ~$14.99/mo | Budget indexed multilingual |
| Loco Translate | Self-hosted | Free | Free | Interface strings only |
Where machine translation still fails
Quality varies far more by language pair and content type than by vendor, because most of these tools ultimately call the same handful of engines. What predicts a bad result is not which plugin you bought.
Major European pairs, English to German, French, Spanish, Italian, Dutch, are reliably good; DeepL in particular produces output that reads naturally for informational content. English to Japanese, Korean, Arabic, and Finnish remain noticeably weaker, with register and formality errors that native speakers spot immediately even when the meaning survives. Any language with grammatical formality distinctions, so German, Japanese, Korean, and French, will pick a level of politeness on your behalf, and it may not be the one your brand wants.
By content type, the pattern is consistent: documentation and product descriptions translate well, marketing copy translates adequately but loses whatever made it persuasive, and anything relying on idiom, humour, or wordplay fails outright. The pragmatic approach is to machine translate everything, then pay a human to review your ten highest-value pages, which is typically the homepage, pricing, and your top converting landing pages. That captures most of the quality benefit for a small fraction of full human translation cost.
Always build a glossary before your first bulk translation run. Product names, feature names, and industry terms that happen to be ordinary words are the classic failure, and fixing them afterwards across thousands of strings is far more work than declaring them up front.
Frequently asked questions
Will Google penalise machine translated content?
Not for being machine translated as such. Google’s guidance targets low-value auto-generated content, and a well-translated page serving a real audience is not that. What does cause problems is missing hreflang, translated pages with broken layout, or thin machine output nobody has reviewed. Translate properly and review your key pages.
What happens if I cancel a hosted service?
Your translated pages stop being served, and the URLs that ranked will 404 or redirect back to your source language. Some vendors offer an export, but re-importing into a different tool is rarely clean. If you might want to leave, choose self-hosted from the start.
Subdirectory, subdomain, or separate domain?
Subdirectories such as example.com/de/ for almost everyone, because they inherit your existing domain authority. Country-code domains only make sense with genuinely separate operations, local teams, and the budget to build authority for each one independently.
Do these translate WooCommerce properly?
WPML is strongest, having supported WooCommerce deeply for years including product attributes, variations, and checkout strings. TranslatePress handles stores well. Hosted services translate the rendered page so they cover the storefront, but leave order confirmation emails and admin-side content in the original language, which surprises people after launch.
How many words does my site actually have?
Almost always more than you think, because menus, widgets, footers, form labels, product attributes, and SEO metadata all count. Run a word count before choosing a tier rather than estimating from your post archive, and check whether the vendor counts source words or translated words across all languages.
Can I mix machine and human translation?
Yes, and you should. Every tool here allows editing machine output. WPML has the most developed workflow for assigning translation jobs to people, while TranslatePress makes ad hoc human correction easiest thanks to its visual editor.
The verdict
For most business sites: TranslatePress Business at €199. Self-hosted so you own the output, a visual editor that non-technical staff can actually use, and the SEO features you need at a price that does not compound annually.
For complex sites and serious WooCommerce stores: WPML Multilingual CMS at €99. Nothing matches its coverage of awkward content structures or its human translation workflow. Budget for credit top-ups, because 90,000 goes faster than the number implies.
If a developer is involved and performance matters: Polylang Pro with your own DeepL key. Lowest long-run cost, lightest footprint, and DeepL’s direct pricing beats every reseller here.
If you want hosted: Linguise at $15 a month, not Weglot. Weglot is the better product, but not by enough to justify paying several times more every year for the same 200,000 words. Choose Weglot when deployment speed across an unusual stack is worth the premium, which for agencies it sometimes genuinely is.
Whichever you choose, add Loco Translate alongside it. Every multilingual project eventually needs to fix a string that lives in a theme file, and it is free.
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