# Crowdin vs SYSTRAN Translate API

> Crowdin scores 69.6 (B) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments & pricing. Both do translate text. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/crowdin-vs-systran
- Markdown: https://www.anchorterminal.com/compare/crowdin-vs-systran.md (~2,450 tokens)
- Slim: https://www.anchorterminal.com/compare/crowdin-vs-systran.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/crowdin-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

Crowdin scores 69.6 (B) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments & pricing. Both do translate text.

- Crowdin: grade B, 69.6/100, rank #153 of 722. Markdown https://www.anchorterminal.com/tools/crowdin.md · JSON https://www.anchorterminal.com/api/v1/tools/crowdin.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

### Crowdin (B)

Good for: Teams that keep product strings and files in Crowdin and want an agent to upload sources, check progress, apply pre-translation, manage glossaries and pull builds.

Ahead on:
- Reliability, 78 against 25
- Schema & documentation, 80 against 42
- Agent ergonomics, 69 against 54
- Security & auth, 68 against 55
- Maintenance & community, 82 against 4
- Transparency & trust, 79 against 51

Watch for: The terms forbid accessing the service to monitor availability, performance or functionality, or for benchmarking, without Crowdin's prior written consent

### 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:
- Payments & pricing, 40 against 30

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 | Crowdin | SYSTRAN Translate API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 78 | 25 | Crowdin +53 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 80 | 42 | Crowdin +38 |
| Agent ergonomics | 13% (16.2 this run) | 69 | 54 | Crowdin +15 |
| Security & auth | 14% (17.5 this run) | 68 | 55 | Crowdin +13 |
| Payments & pricing | 10% (12.5 this run) | 30 | 40 | SYSTRAN Translate API +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 82 | 4 | Crowdin +78 |
| Transparency & trust | 7% (8.8 this run) | 79 | 51 | Crowdin +28 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **69.6 · B** | **40 · E** | |

## Facts side by side

| Fact | Crowdin | SYSTRAN Translate API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Crowdin OÜ | SYSTRAN (ChapsVision) |
| Hosted endpoint | `https://api.crowdin.com/api/v2` | `https://api-translate.systran.net` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Pay per use |
| x402 | no | no |
| Licence | Proprietary service under Crowdin's terms. The CLI and the official API clients are MIT | Proprietary service under the SYSTRAN Translate PRO terms and conditions |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | 2026-09-30 | 2023-06-16 |
| Terms last updated | 2026-09-24 | no date given |
| Privacy policy last updated | 2026-09-24 | no document linked |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | yes | yes |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 320 stars, 264k npm/wk, 14k PyPI/wk | none |

## Verdicts

**Crowdin.** The REST API has a public OpenAPI document with 374 operations, and tokens can be limited by scope, access level and project. Translation runs inside Crowdin projects and connected engines, so it is not a stateless per-character translation API. No Retry-After guidance, idempotency keys or SLA were found in the reviewed documentation.

**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

### Crowdin

1. Send `Authorization: Bearer <token>` to `https://api.crowdin.com/api/v2`. Crowdin Enterprise uses `https://<organization_domain>.api.crowdin.com/api/v2`
2. Use the MCP V2 endpoint `https://mcp.crowdin.com/v2/mcp` and set `crowdin-tool-sets`, because the server loads all 33 tool sets by default
3. Set `crowdin-read-only: true` on the MCP connection for exploration. It exposes only list and get tools
4. Keep to 20 concurrent requests an account across all tokens, and add your own backoff on 429
5. Upload a file to `/storages` first, then pass the `storageId` to the add-file call. Builds, exports and reports are asynchronous and need a status poll
6. `/mts/{mtId}/translations` takes at most 100 strings a call and needs the `mt` scope and a configured engine

### 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, Crowdin or SYSTRAN Translate API?

Crowdin scores 69.6 (B) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments & pricing.

### Do Crowdin and SYSTRAN Translate API need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Crowdin and SYSTRAN Translate API without installing anything?

Yes. Crowdin has a hosted endpoint at https://api.crowdin.com/api/v2 and SYSTRAN Translate API at https://api-translate.systran.net.


## For agents

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

## Other comparisons with Crowdin or SYSTRAN Translate API

- [Amazon Translate vs Crowdin](https://www.anchorterminal.com/compare/amazon-translate-vs-crowdin.md)
- [Amazon Translate vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/amazon-translate-vs-systran.md)
- [Azure Translator vs Crowdin](https://www.anchorterminal.com/compare/azure-translator-vs-crowdin.md)
- [Azure Translator vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/azure-translator-vs-systran.md)
- [Crowdin vs DeepL API](https://www.anchorterminal.com/compare/crowdin-vs-deepl-api.md)
- [Crowdin vs Google Cloud Translation](https://www.anchorterminal.com/compare/crowdin-vs-google-cloud-translation.md)
- [Crowdin vs Lara Translate API](https://www.anchorterminal.com/compare/crowdin-vs-lara-translate.md)
- [Crowdin vs LibreTranslate](https://www.anchorterminal.com/compare/crowdin-vs-libretranslate.md)
- [Crowdin vs Lingo.dev](https://www.anchorterminal.com/compare/crowdin-vs-lingo-dev.md)
- [Crowdin vs Lingvanex Translation API](https://www.anchorterminal.com/compare/crowdin-vs-lingvanex.md)
- [Crowdin vs Lokalise](https://www.anchorterminal.com/compare/crowdin-vs-lokalise.md)
- [Crowdin vs Phrase](https://www.anchorterminal.com/compare/crowdin-vs-phrase.md)
- [DeepL API vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/deepl-api-vs-systran.md)
- [Google Cloud Translation vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/google-cloud-translation-vs-systran.md)
- [Lara Translate API vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/lara-translate-vs-systran.md)
- [LibreTranslate vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/libretranslate-vs-systran.md)
- [Lingo.dev vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/lingo-dev-vs-systran.md)
- [Lingvanex Translation API vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/lingvanex-vs-systran.md)
- [Lokalise vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/lokalise-vs-systran.md)
- [Phrase vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/phrase-vs-systran.md)