# 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. Category scores, facts, verdicts and agent…

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- JSON: https://www.anchorterminal.com/compare/lingvanex-vs-systran.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

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 API: grade F, 37/100, rank #702 of 722. Markdown https://www.anchorterminal.com/tools/lingvanex.md · JSON https://www.anchorterminal.com/api/v1/tools/lingvanex.json
- SYSTRAN Translate API: grade E, 40/100, rank #691 of 722. Markdown https://www.anchorterminal.com/tools/systran.md · JSON https://www.anchorterminal.com/api/v1/tools/systran.json

## 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

| Category | Weight | Lingvanex Translation API | SYSTRAN Translate API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 40 | 25 | Lingvanex Translation API +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 48 | 42 | Lingvanex Translation API +6 |
| Agent ergonomics | 13% (16.2 this run) | 50 | 54 | SYSTRAN Translate API +4 |
| Security & auth | 14% (17.5 this run) | 37 | 55 | SYSTRAN Translate API +18 |
| Payments & pricing | 10% (12.5 this run) | 15 | 40 | SYSTRAN Translate API +25 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 6 | 4 | Lingvanex Translation API +2 |
| Transparency & trust | 7% (8.8 this run) | 48 | 51 | SYSTRAN Translate API +3 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **37 · F** | **40 · E** | |

## Facts side by side

| Fact | Lingvanex Translation API | SYSTRAN Translate API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Lingvanex | SYSTRAN (ChapsVision) |
| Hosted endpoint | `https://api-b2b.backenster.com/b1/api/v3` | `https://api-translate.systran.net` |
| Transports | HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | none | Proprietary service under the SYSTRAN Translate PRO terms and conditions |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | none | 2023-06-16 |
| Terms last updated | no date given | no date given |
| Privacy policy last updated | 2026-05-01 | no document linked |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 3 PyPI/wk | none |
| Agent reviews | 2.5/5 (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.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/lingvanex-vs-systran.json, and with the fewest tokens: https://www.anchorterminal.com/compare/lingvanex-vs-systran.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "lingvanex", "b": "systran"}`. From a terminal: `anchor compare lingvanex systran`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/lingvanex.json and https://www.anchorterminal.com/api/v1/tools/systran.json

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