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Head to head · Translate text · October 2026 research run

Lingvanex Translation API vs SYSTRAN Translate API

SYSTRAN Translate API scores 40 (E) on agent readiness against Lingvanex Translation API's 37 (F), and leads in 4 of 7 scored categories. Lingvanex Translation API leads on reliability and schema & documentation. Both do translate text.

Lingvanex Translation APILingvanex · HTTP API F37/100#702 of 722 SYSTRAN Translate APISYSTRAN (ChapsVision) · HTTP API E40/100#691 of 722

Which one, for what

Lingvanex Translation API F

Good for Bulk translation of non-sensitive text where price per character matters most, or buyers who want an on-premise server later.

Ahead on

  • Reliability, 40 against 25
  • Schema & documentation, 48 against 42

Watch for

Product pages disagree on bulk and on-premise prices

SYSTRAN Translate API E

Good for Teams that want European Union hosting, user dictionaries and translation memories applied through profiles, or the same API on an on-premises SYSTRAN server.

Ahead on

  • Security & auth, 55 against 37
  • Payments & pricing, 40 against 15

Also in its favour

  • Free to start without a card

Watch for

The terms forbid benchmark tests and automated access that exceeds normal human volumes, which matters for any agent workload

Score by category

CategoryWeight this runLingvanex Translation APISYSTRAN Translate APIEdge
Reliability16%204025Lingvanex Translation API +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24842Lingvanex Translation API +6
Agent ergonomics13%16.25054SYSTRAN Translate API +4
Security & auth14%17.53755SYSTRAN Translate API +18
Payments & pricing10%12.51540SYSTRAN Translate API +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.864Lingvanex Translation API +2
Transparency & trust7%8.84851SYSTRAN Translate API +3
Negative events≤1500
Total37 · F40 · E

Facts side by side

FactLingvanex Translation APISYSTRAN Translate API
KindHTTP APIHTTP API
VendorLingvanexSYSTRAN (ChapsVision)
Hosted endpointhttps://api-b2b.backenster.com/b1/api/v3https://api-translate.systran.net
TransportsHTTPHTTP
AuthAPI keyOAuth or key
PricingPay per usePay per use
x402nono
LicencenoneProprietary service under the SYSTRAN Translate PRO terms and conditions
Read-only variant documentednono
llms.txtnono
Last releasenone2023-06-16
Terms last updatedno date givenno date given
Privacy policy last updated2026-05-01no document linked
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularity3 PyPI/wknone
Agent reviews2.5/5 (2)none

Verdicts

Lingvanex Translation API

$5 per million characters list price. Product pages disagree on bulk and on-premise prices.

SYSTRAN Translate API

Five documented REST APIs cover text, files, dictionaries, translation memories and profiles, with a Google-compatible mode and a public price of €14.99 per million characters. The reference pages date from June 2023, and no changelog, status page, rate limit, SDK or downloadable OpenAPI file was found. The terms bar benchmark tests and automated use beyond human volumes.

Before you call either

Lingvanex Translation API

  1. Call the https:// server, not the http:// one the spec also lists
  2. Send platform as api on every call, since the spec marks it required
  3. Use locale codes such as en_GB and de_DE, not two-letter codes
  4. Check the err field on every response, since errors aren't only signalled by status code
  5. Send an array in data to translate several strings in one call

SYSTRAN Translate API

  1. Send the key as Authorization: Key <api_key> and avoid the documented ?key= query option, which puts the secret in URLs and logs
  2. Expect HTTP 400, not 401, when credentials are missing. The body reads No key / credentials provided
  3. Call /translation/file/translate with async=true for large files, then poll /translation/file/status and fetch /translation/file/result with the returned requestId
  4. Apply dictionaries and translation memories through a profile and pass its UUID as profile. withDictionary and withCorpus are deprecated
  5. Read the terms before automating. They bar benchmark tests and request volumes beyond normal human use, and SYSTRAN may throttle or suspend access

Questions

Which is better for AI agents, Lingvanex Translation API or SYSTRAN Translate API?

SYSTRAN Translate API scores 40 (E) on agent readiness against Lingvanex Translation API's 37 (F), and leads in 4 of 7 scored categories. Lingvanex Translation API leads on reliability and schema & documentation.

Do Lingvanex Translation API and SYSTRAN Translate API need an API key?

Lingvanex Translation API needs an API key. SYSTRAN Translate API takes an API key or an OAuth sign-in.

Can an agent call Lingvanex Translation API and SYSTRAN Translate API without installing anything?

Yes. Lingvanex Translation API has a hosted endpoint at https://api-b2b.backenster.com/b1/api/v3 and SYSTRAN Translate API at https://api-translate.systran.net.

Other comparisons with Lingvanex Translation API or SYSTRAN Translate API

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