# SYSTRAN Translate API vs TranslatePlus (slim)

> SYSTRAN Translate and TranslatePlus score within a point of each other for translation, 40.2 and 39.7 out of 100. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/systran-vs-translateplus.md (~4,800 tokens) · this version ~2,780 tokens · JSON https://www.anchorterminal.com/compare/systran-vs-translateplus.json · canonical https://www.anchorterminal.com/compare/systran-vs-translateplus
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
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SYSTRAN Translate API and TranslatePlus score within a point of each other on agent readiness, 40.2 (E) and 39.7 (E). TranslatePlus leads on reliability, schema & documentation, agent ergonomics and maintenance & community. Both do translation.

- SYSTRAN Translate API: E 40.2, rank #1305 of 1486 · https://www.anchorterminal.com/tools/systran.min.md
- TranslatePlus: E 39.7, rank #1316 of 1486 · https://www.anchorterminal.com/tools/translateplus.min.md
- SYSTRAN Translate API, 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 35; Payments & pricing, 40 against 30. Also A hosted endpoint, with nothing to install; Free to start without a card; No incidents deducted, where TranslatePlus loses 3 points for them.
- TranslatePlus, good for Low-cost per-request translation of short strings, HTML, emails, subtitles and i18n files for small projects. Ahead on Reliability, 45 against 25; Schema & documentation, 52 against 42; Agent ergonomics, 61 against 54; Maintenance & community, 10 against 4.

| Category | SYSTRAN Translate API | TranslatePlus |
| --- | --- | --- |
| Reliability (16%) | 25 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 42 | 52 |
| Agent ergonomics (13%) | 54 | 61 |
| Security & auth (14%) | 55 | 35 |
| Payments & pricing (10%) | 40 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 4 | 10 |
| Transparency & trust (7%) | 53 | 52 |

| Fact (where they differ) | SYSTRAN Translate API | TranslatePlus |
| --- | --- | --- |
| Vendor | SYSTRAN (ChapsVision) | PetaBytes, Inc. |
| Hosted endpoint | `https://api-translate.systran.net` | no (local only) |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Freemium |
| Licence | Proprietary service under the SYSTRAN Translate PRO terms and conditions | none |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2023-06-16 | 2026-01-11 |
| Terms last updated | no date given | 2024-12-18 |
| Privacy policy last updated | no document linked | no date given |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Popularity | none | 6 npm/wk, 4 PyPI/wk |
| Agent reviews | 2.8/5 (4) | none |

Why the edge:
- Reliability, TranslatePlus +20: SYSTRAN Translate API 25 (Hosted reading of the checklist. No status page was found on the vendor's site, docs or support page, and status.systran.net and status.systransoft.com did not resolve (0). With no page there is no incident history to read (5, the rubric's floor for unreadable history). Request size is documented at 50,000 paragraphs or 50 MB a call, and file size caps of 1, 5 and 15 MB by format are on the pricing page, but no request rate is published. The terms say SYSTRAN may slow or suspend an account that sends too many requests at once (5 of 15). No 429 response, Retry-After header, backoff advice or idempotency key is documented (0). The Translate PRO terms commit to 97 per cent availability over a year on a best-efforts basis with no credit schedule (5 of 10). The API is generally available (10). Total 25.); TranslatePlus 45 (Hosted lines. status.translateplus.io is the vendor's own page; on 6 November 2026 it showed 'All systems unknown' and a last update of 22 January 2026, with data loading by script (5). No incident history to read (5). The rate-limits guide gives 100,000 requests a minute and 100,000,000 an hour per key, while llms.txt gives 50 requests a second on the Free plan, so limits are published but inconsistent (10). 429 returns a JSON detail message, responses carry X-RateLimit-Limit, -Remaining and -Reset, and the guide shows waiting for the reset with capped retries (15). No SLA. The terms say TranslatePlus strives for 99.9% uptime 'but do not guarantee uninterrupted service' (0). API v2 is the current, non-beta version (10). 5+5+10+15+0+10 = 45.)
- Security & auth, SYSTRAN Translate API +20: SYSTRAN Translate API 55 (Model reading of the checklist, as for the other translation listings, with training and retention in place of the least-privilege and injection lines. API keys are created in the account console, and OAuth client credentials or PKCE tokens are accepted. The OpenID metadata lists only the `openid` and `offline_access` scopes, so no scoped keys were found (20). The key is also accepted as a `?key=` query parameter (minus 10). The terms forbid SYSTRAN any use of content beyond running the service, and the API page says data is not used for another purpose (18 of 20). Content is destroyed when no longer needed, with a 72-hour encrypted hold when error patterns are detected. Dictionaries and translation memories stay until the customer deletes them (12 of 15). An administrator's usage dashboard groups consumption by user agent. No audit log was found (5 of 15). The security page claims ISO 27001 certification and penetration tests at each release. No security.txt, disclosure policy or bug bounty was found (10 of 20). Total 55.); TranslatePlus 35 (One API key per account in the X-API-KEY header, which the docs say 'carries full access to your account's resources', and can be revoked in the dashboard (15). No scopes or read-only keys (5). Translations return the caller's own text, so little untrusted content (10). llms.txt claims request logging and an analytics dashboard, which we couldn't see without an account (5). translateplus.io/.well-known/security.txt returns 404 and no disclosure policy was found; llms.txt says 'SOC 2 compliant' and 'SOC 2 Type II certified infrastructure' with no report or auditor named (0). 15+5+10+5+0 = 35.)
- Schema & documentation, TranslatePlus +10: SYSTRAN Translate API 42 (The five reference pages are generated from Swagger definitions and show typed parameters and 60 operations, but no OpenAPI or Swagger file is linked for download, so an agent has only HTML (8 of 25). No llms.txt at docs.systran.net or www.systransoft.com, both 404 (0). Operations and parameters carry one or two sentence descriptions, deprecated parameters are marked with their replacement, and nothing says when not to use a call (12 of 20). Parameters are typed with enums for `encoding`, `size` and `autodetectionMode`, but `options` and `modelOptions` are free-form (10 of 15). Each operation has a response example, yet only 400 and 500 are documented and the 200 example for text translation shows an error body (7 of 15). Each API states a version (Translation 2.11.0, Profiles 1.8.0) and has an `apiVersion` endpoint, with no changelog found (5 of 15). Total 42.); TranslatePlus 52 (No OpenAPI or other machine-readable contract found in the docs or either llms.txt (0). llms.txt on the site and on docs.translateplus.io (10). Endpoint pages say what each call does, with little on when to choose HTML, email or i18n jobs over plain text (10). Required fields and per-plan character limits per request are documented, without enums for language codes beyond a supported-languages call (10). Code examples in several languages and an error-handling guide with status codes (12). Versioned /v1 and /v2 paths and a changelog, whose newest entry is 2.0.0 on 9 December 2024 (10). 0+10+10+10+12+10 = 52.)
- Payments & pricing, SYSTRAN Translate API +10: SYSTRAN Translate API 40 (No x402, MPP or L402 (0). The developer pricing page shows €14.99 for 1 million characters, billed monthly, without a login. The terms add that characters are billed by use above a minimum monthly commitment whose size is not stated (20). A 14-day trial with 500,000 characters, and the trial page says no credit card is required (20). A person creates the account in a browser, and paid plans go through a web checkout (0). Total 40.); TranslatePlus 30 (No x402, MPP or L402 (0). Per-request prices public, $0.001 a request after the free tier and $0.0001 to $0.0002 on the $49, $99 and $299 monthly plans (20). Free plan of 5,000 requests a month with 500 characters each; whether a card is needed isn't stated (10). A person signs up in a browser or with Google OAuth (0). 0+20+10+0 = 30.)
- Agent ergonomics, TranslatePlus +7: SYSTRAN Translate API 54 (API reading of the checklist. Text translation returns only the outputs by default, and `withInfo`, `withSource` and `withAnnotations` add detail on request (18 of 25). Dictionary and corpus lists take `skip`, `limit` and `sort`, and language and feature lists filter by source and target (15 of 20). Errors carry a message, a status code and an info object, but only 400 and 500 are documented, and a call without credentials returned 400 with an `authorizationUrl` when we tried `/translation/apiVersion` (8 of 20). No idempotency key or retry guidance. File jobs return a `requestId` that can be polled and cancelled (5 of 20). Text translation needs only `input` and `target`, and the Google-compatible paths ease a migration. No official SDK was found on the docs or the SYSTRAN GitHub organisation (8 of 15). Total 54.); TranslatePlus 61 (API reading. Batch translation of up to 100 texts a call and separate HTML, email, subtitle and i18n job endpoints (16). Few output controls or filters (10). Errors are a `detail` string with HTTP status codes (12). No idempotency key for i18n jobs, though text translation is stateless (8). Official SDKs listed for Python, JavaScript and TypeScript, Java and PHP, with few required fields (15). 16+10+12+8+15 = 61.)
- Maintenance & community, TranslatePlus +6: SYSTRAN Translate API 4 (No changelog or release notes for the API were found. The reference pages return a Last-Modified header of 16 June 2023 and a 2023 copyright line, which is the newest dated change we could establish (0). No dated entries in the last 90 days (0). Support runs through contact forms and a help centre at help.systrangroup.com, which answered our reader with 403, and there is no public issue tracker for the API (4 of 15). No official SDK was found. The SYSTRAN GitHub organisation lists seven public repositories, none an API client (0). No package to assess (0). Total 4.); TranslatePlus 10 (The newest dated change found is translateplus-python 2.0.7 and translateplus-js 2.0.1 on 11 January 2026, about ten months before this check, and the API changelog stops at 9 December 2024 (0). No release or dated change in the last 90 days (0). Support by email and a support portal; the status page hasn't updated since January (3). SDKs exist for four languages but haven't changed since January (5). Weekly downloads of 4 (PyPI) and 6 (npm) (2). 0+0+3+5+2 = 10.)