# Phrase vs SYSTRAN Translate API

> Phrase scores 64.2 (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/phrase-vs-systran
- Markdown: https://www.anchorterminal.com/compare/phrase-vs-systran.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/phrase-vs-systran.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/phrase-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

Phrase scores 64.2 (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.

- Phrase: grade B, 64.2/100, rank #285 of 722. Markdown https://www.anchorterminal.com/tools/phrase.md · JSON https://www.anchorterminal.com/api/v1/tools/phrase.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

### Phrase (B)

Good for: Teams that keep translation projects, term bases and translation memories in Phrase and want an agent to run them, or to translate through engines chosen per language pair.

Ahead on:
- Reliability, 55 against 25
- Schema & documentation, 87 against 42
- Agent ergonomics, 70 against 54
- Maintenance & community, 83 against 4
- Transparency & trust, 74 against 51

Watch for: status.phrase.com lists 14 incidents between 10 July and 8 October 2026, two marked critical and ten major, most confined to one component

### 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

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 | Phrase | SYSTRAN Translate API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 25 | Phrase +30 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 87 | 42 | Phrase +45 |
| Agent ergonomics | 13% (16.2 this run) | 70 | 54 | Phrase +16 |
| Security & auth | 14% (17.5 this run) | 58 | 55 | Phrase +3 |
| 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) | 83 | 4 | Phrase +79 |
| Transparency & trust | 7% (8.8 this run) | 74 | 51 | Phrase +23 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **64.2 · B** | **40 · E** | |

## Facts side by side

| Fact | Phrase | SYSTRAN Translate API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Phrase a.s. | SYSTRAN (ChapsVision) |
| Hosted endpoint | `https://mcp.eu.phrase.com` | `https://api-translate.systran.net` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Pay per use |
| x402 | no | no |
| Licence | Proprietary service under the Phrase Terms of Service. The CLI, the Strings API clients and the deprecated local MCP server on GitHub are MIT | Proprietary service under the SYSTRAN Translate PRO terms and conditions |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| MCP registry | `io.github.phrase/mcp` | not listed |
| Last release | 2026-10-06 | 2023-06-16 |
| Terms last updated | no date given | no date given |
| Privacy policy last updated | 2026-10-06 | no document linked |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | yes | 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 | 49 stars, 40k npm/wk, 14k PyPI/wk | none |

## Verdicts

**Phrase.** Nine APIs with public OpenAPI specs, Markdown docs and a hosted MCP server that signs in with OAuth and separates view, create and delete consents. The status page lists 14 incidents in 90 days, 12 marked major or critical. Capacity top-up prices aren't public, and the terms permit training some models on customer content and prohibit benchmarking.

**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

### Phrase

1. Exchange a Phrase Platform API token at `https://eu.phrase.com/idm/oauth/token` (or `us.phrase.com`) for a Bearer JWT, which lasts about four hours, and refresh it before it expires
2. Send a `User-Agent` header naming your application on every Strings and TMS call. The Strings API answers 400 without one
3. Keep Strings calls under 1,000 in five minutes and four in parallel, and read `X-Rate-Limit-Reset` and `X-Rate-Limit-Reason` on a 429
4. Send at most six texts of 2,000 characters to `/v2/textTranslations`, with `consumerId` and `targetLang`. Term bases and translation memories work only with an AI translation agent profile
5. Use the MCP URL for the account's region, `https://mcp.eu.phrase.com` or `https://mcp.us.phrase.com`, and ask the user for the view consent alone unless the task writes

### 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, Phrase or SYSTRAN Translate API?

Phrase scores 64.2 (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 Phrase and SYSTRAN Translate API need an API key?

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

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

Yes. Phrase has a hosted endpoint at https://mcp.eu.phrase.com and SYSTRAN Translate API at https://api-translate.systran.net.


## For agents

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

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