Supertext API
Supertext API: A developer-focused API combining AI translation with optional human verification. Ranked #118 of 156 in Translation Software by our editors (3.0/10); pricing: Paid; best for API-based AI and human-verified file translation.
At a glance
- Editor score3.0 / 10
- PricingPaid
- Best forAPI-based AI and human-verified file translation
- Free planNo
- API accessYes
- Facts checked22 Sep 2026
Where it wins
- Translates plain text and uploaded files with AI
- Adds optional human verification and glossary controls
- Supports quotes, asynchronous downloads, and cost monitoring
Where it doesn't
- No free plan is available
- Requires separate monthly and usage-based API charges
- Supports 28 verified languages
Our verdict on Supertext API
Supertext API is a RESTful translation service for developers, growth teams, and localization specialists. It handles plain text and uploaded files with AI, supports automatic language detection, and offers optional human-verified fused translation. The API can connect translation workflows across websites, applications, CMS, PIM, and TMS environments. Supported file types include HTML, XML, Office documents, PDFs, subtitles, and plain text, giving teams a focused option for programmatic content localization rather than a standalone desktop translation tool.
Its strongest fit is workflow integration. API-key authentication supports controlled access, while quote endpoints allow advance cost checks before translation requests. Asynchronous file translation and download suit processes that do not need an immediate response, and usage and cost monitoring helps teams track API activity. Glossary parameters add terminology control for repeated or specialized language. The integration list includes Across, Drupal, memoQ, Microsoft Outlook, Microsoft PowerPoint, Microsoft Word, STAR Transit, Trados Studio, Wordbee, and XTM, alongside CMS, PIM, and TMS connections.
The pricing structure is built around a separate monthly API subscription and usage-based translation charges, so it is better suited to organizations planning recurring API workflows than to occasional users seeking a free starting point. There is no free plan, and the supported language set is limited to 28 verified languages. Choose Supertext API when file handling, human verification, terminology controls, and localization-system integration matter. Teams needing broader language coverage, a free tier, or a simpler point-and-click translation experience should consider an alternative.
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Supertext API pricing
All 2 Supertext API plans and prices →
Supertext API fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| Document translation | Yes |
| Website translation | Yes |
| Translation memory | Not verified |
| Glossary tools | Yes |
| API access | Yes |
| Supported languages | 28 |
| Deployment | Cloud, Self-hosted |
| Compliance & security | SOC 2, ISO 27001, GDPR, SSO/SAML |
| Support | Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 13 integrations: CMS, PIM, TMS, Across, Drupal, memoQ … |
| Pricing | Paid (source) |
| Website | supertext.com |
| Facts checked | 22 Sep 2026 |
Supertext API integrations
Supertext API lists 13 integrations on its own site.
- CMS
- PIM
- TMS
- Across
- Drupal
- memoQ
- Microsoft Outlook
- Microsoft PowerPoint
- Microsoft Word
- STAR Transit
- Trados Studio
- Wordbee
- XTM
Alternatives to Supertext API
- Google Cloud TranslationA broad Google Cloud translation stack for developers building multilingual systems.9.4
- DeepL TranslatorA broad translation service spanning everyday use, workplace tools, and developer workflows.9.3
- Google TranslateA free, multi-device translator covering everyday text, media, documents, and websites.9.2
See all Supertext API alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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