{ "data": { "a": { "slug": "deepl-api", "name": "DeepL API", "vendor": "DeepL", "vendorUrl": "https://www.deepl.com/en/products/api", "kind": "http-api", "category": "translation", "summary": "Translation API for text and documents in over 100 languages, with glossaries, formality control, style rules, custom instructions, a writing endpoint and a voice API.", "url": "https://www.anchorterminal.com/tools/deepl-api", "markdownUrl": "https://www.anchorterminal.com/tools/deepl-api.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/deepl-api.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/deepl-api.json", "repo": "https://github.com/DeepL/deepl-mcp-server", "license": "MIT (MCP server)", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.deepl.com/v2/translate", "packages": [ { "registry": "npm", "name": "deepl-node" }, { "registry": "pypi", "name": "deepl" }, { "registry": "npm", "name": "deepl-mcp-server" } ], "auth": "mixed", "authNotes": "`Authorization: DeepL-Auth-Key \u003ckey\u003e` header. API Free keys end in `:fx` and go to api-free.deepl.com, paid keys to api.deepl.com. The hosted MCP at mcp.deepl.com signs in with OAuth 2.1 against a DeepL account and takes no API key. The local MCP server reads `DEEPL_API_KEY`.", "pricing": "freemium", "pricingNotes": "DeepL has replaced its API plans. API Free (500,000 characters a month) and API Pro can no longer be bought. API Developer, where the free API key sign-up leads, allows 1,000,000 characters in total and never resets. API Growth is a monthly or yearly subscription with 1 million characters a month included (12 million a year), pay-as-you-go above that, and caps of 50 million characters and 300 speech-to-text hours a month. Enterprise is custom (https://support.deepl.com/hc/en-us/articles/360021200939-DeepL-API-plans, https://www.deepl.com/en/ai-agents). Every source character counts, spaces included, but HTML and XML tags don't when tag handling is on. Word, PowerPoint, Excel and PDF files bill at least 50,000 characters each (https://support.deepl.com/hc/en-us/articles/360020685720-Usage-count-and-billing-in-DeepL-API). We couldn't read the per-character rates, which the pricing page renders only in a browser.", "priceSummary": "Freemium", "where": "both", "x402": { "level": "no", "endpoints": [] }, "toolCount": 13, "popularity": { "githubStars": 117, "npmWeekly": 328192, "pypiWeekly": 291467, "asOf": "2026-09-30" }, "docsUrl": "https://developers.deepl.com", "llmsTxt": "https://developers.deepl.com/llms.txt", "openapi": "https://developers.deepl.com/api-reference/openapi.yaml", "capabilities": [ "translate.text", "translate.documents", "translate.glossary", "translate.detect", "translate.formality", "speech.translation" ], "tags": [ "hosted", "freemium", "free-tier", "no-card", "mcp", "llms-txt", "openapi", "typescript", "python", "eu", "enterprise", "closed-source" ], "lastRelease": "2026-09-30", "graded": true, "anchor": { "graded": true, "score": 72, "grade": "BB", "agentReady": true, "rank": 98, "ranked": true, "rankOf": 722, "categoryRank": 2, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 83, "maintenance": 87, "payments": 30, "reliability": 52, "schema": 95, "security": 82, "transparency": 80 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Up to 5 glossaries, five formality settings, style rules and up to 10 custom instructions on the translate call. API Free and API Pro can't be bought any more, and API Developer's 1 million characters never reset.", "bestFor": "Agents that need terminology control, formality and document layout kept, in European and Asian languages, and teams that want an MCP server today.", "strengths": [ "Up to 5 glossaries, five formality settings, style rules and up to 10 custom instructions on the translate call", "OpenAPI document synced daily to GitHub, llms.txt and 17 dated changelog entries since 1 July 2026", "API Key Permissions scope a key to chosen endpoints, and keys travel only in a header", "Two official MCP servers, hosted with OAuth and local with an API key, the local one with CI and 15 releases since July", "Documented retry rules, retry 429, 529 and 5xx with backoff, don't retry 456" ], "weaknesses": [ "API Free and API Pro can't be bought any more, and API Developer's 1 million characters never reset", "Per-character rates only appear on a browser-rendered pricing page", "No published request rate and no SLA found for self-serve plans", "The privacy policy doesn't say how API Developer text is handled", "Office and PDF files bill at least 50,000 characters each" ], "agentNotes": [ "Match the host to the key. Keys ending `:fx` go to api-free.deepl.com, others to api.deepl.com", "Send the key in the `Authorization: DeepL-Auth-Key` header, since query and body keys now get 403", "Retry 429 and 529 with exponential backoff but stop on 456, which means the quota is spent", "Set `tag_handling` to html for markup so the tags survive and aren't billed", "Put a key-level usage limit on any key an agent holds, and scope it to the endpoints it needs" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 72 } ], "editorialScores": { "ergonomics": 83, "maintenance": 87, "payments": 30, "reliability": 52, "schema": 95, "security": 82, "transparency": 67 }, "provenanceScore": 93 }, "connect": { "install": "pip install deepl # or: npm i deepl-node", "http": "curl -X POST https://api.deepl.com/v2/translate -H \"Authorization: DeepL-Auth-Key $DEEPL_API_KEY\" \\\n -H \"Content-Type: application/json\" \\\n -d '{\"text\":[\"Your table is booked for seven.\"],\"target_lang\":\"FR\",\"formality\":\"prefer_more\"}'", "claudeCode": "claude mcp add --transport http deepl https://mcp.deepl.com/v1/mcp", "config": { "mcpServers": { "deepl": { "args": [ "-y", "deepl-mcp-server" ], "command": "npx", "env": { "DEEPL_API_KEY": "${DEEPL_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/translate.text", "tool": "https://letme.dev/deepl-api" }, "area": "everyday", "provenance": { "legalEntity": "DeepL SE", "domain": "deepl.com", "domainRegistered": "2010-04-22", "endpointOnVendorDomain": true, "terms": "https://www.deepl.com/en/pro-license", "privacy": "https://www.deepl.com/en/privacy", "statusPage": "https://status.deepl.com", "changelog": "https://developers.deepl.com/docs/resources/roadmap-and-release-notes", "securityTxt": "valid", "checked": "2026-10-01", "notes": [ "The privacy policy names DeepL SE and DeepL AI GmbH, Maarweg 165, 50825 Cologne, as controllers.", "security.txt is PGP-signed and expires on 2026-12-01, per the 30 September check.", "The changelog says status.deepl.com became one combined page with a dedicated API view on 2026-07-16. It renders only in a browser." ], "score": 93 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/deepl-api.json", "live": { "slug": "deepl-api", "probe": { "target": "https://api.deepl.com/v2/translate", "method": "get", "lastAt": "2026-10-08T21:12:08.65520986Z", "lastOk": true, "lastStatus": 403, "lastMs": 126, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 122, "p95ms24h": 154, "samples24h": 271, "samples30d": 1955, "days": [ { "date": "2026-10-01", "probes": 109, "ok": 109 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 239, "ok": 239 } ] }, "vendorStatus": { "page": "https://status.deepl.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:38:25.689562478Z" }, "versions": [ { "registry": "github", "name": "DeepL/deepl-mcp-server", "version": "v1.3.13", "released": "2026-10-08", "seenAt": "2026-10-08T16:08:33.533547283Z" }, { "registry": "npm", "name": "deepl-mcp-server", "version": "1.3.13", "seenAt": "2026-10-08T16:08:33.319349297Z" }, { "registry": "npm", "name": "deepl-node", "version": "1.28.0", "seenAt": "2026-10-08T16:08:30.819547806Z" }, { "registry": "pypi", "name": "deepl", "version": "1.32.0", "released": "2026-08-13", "seenAt": "2026-10-08T16:08:33.111257258Z" } ], "githubStars": 116, "npmWeekly": 333300, "pypiWeekly": 272428, "securityTxt": { "url": "https://deepl.com/.well-known/security.txt", "state": "valid", "expires": "2026-12-01T09:00:00.000Z", "checkedAt": "2026-10-08T15:39:08.610875618Z" }, "llmsTxt": { "url": "https://developers.deepl.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:19.238712612Z" }, "domain": { "domain": "deepl.com", "registered": "2010-04-22", "source": "https://rdap.verisign.com/com/v1/domain/deepl.com", "checkedAt": "2026-10-04T13:05:06.317725836Z" }, "pages": [ { "url": "https://developers.deepl.com/docs/resources/roadmap-and-release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:17:31.120332607Z", "changedAt": "2026-10-07T18:04:14.194353904Z", "fingerprint": "b1979ef50112" }, { "url": "https://www.deepl.com/en/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:27:21.429192924Z", "changedAt": "2026-10-06T16:14:39.26426417Z", "fingerprint": "fa594613dc10" }, { "url": "https://www.deepl.com/en/pro-license", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:27:23.57360392Z", "changedAt": "2026-10-06T16:14:41.437106775Z", "fingerprint": "c0c13dd80195" } ], "updatedAt": "2026-10-08T21:12:08.65520986Z" } }, "answer": "DeepL API scores 72 (BB) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments \u0026 pricing.", "b": { "slug": "systran", "name": "SYSTRAN Translate API", "vendor": "SYSTRAN (ChapsVision)", "vendorUrl": "https://www.systransoft.com", "kind": "http-api", "category": "translation", "summary": "Machine translation API from SYSTRAN, part of ChapsVision, for text and files in 55 languages, with user dictionaries, translation memories and translation profiles. Access needs an API key or OAuth token on a paid or trial subscription.", "url": "https://www.anchorterminal.com/tools/systran", "markdownUrl": "https://www.anchorterminal.com/tools/systran.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/systran.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/systran.json", "license": "Proprietary service under the SYSTRAN Translate PRO terms and conditions", "transports": [ "http" ], "remoteUrl": "https://api-translate.systran.net", "packages": [], "auth": "mixed", "authNotes": "An API key or an OAuth access token, both issued from the SYSTRAN Translate account. Keys go in `Authorization: Key \u003capi_key\u003e` or, as a documented option, in a `?key=` query parameter. Tokens come from client credentials or PKCE and go in `Authorization: Bearer`. Access is self-serve. A person signs up in a browser, and the API works only on the API, Premium or Infinite plans or the trial. No key scopes were found.", "pricing": "usage", "pricingNotes": "€14.99 per 1 million characters, billed monthly, on the developer pricing page (https://www.systransoft.com/pricing/developers/). A 14-day trial includes 500,000 characters and needs no credit card, so an agent's owner can start without a contract. The terms say API characters are billed by use above a minimum monthly commitment, whose size they don't state, and that prices are in dollars for North America. Enterprise plans are sold through sales.", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API reference, the pricing page or the terms (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://docs.systran.net/translateAPI/en/", "capabilities": [ "translate.text", "translate.documents", "translate.glossary", "translate.detect" ], "tags": [ "hosted", "closed-source", "api-key", "oauth", "usage-priced", "free-trial", "no-card", "eu", "iso27001", "sla", "async-jobs", "batch", "enterprise" ], "lastRelease": "2023-06-16", "graded": true, "anchor": { "graded": true, "score": 40, "grade": "E", "agentReady": false, "rank": 691, "ranked": true, "rankOf": 722, "categoryRank": 11, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 54, "maintenance": 4, "payments": 40, "reliability": 25, "schema": 42, "security": 55, "transparency": 51 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "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.", "bestFor": "Teams that want European Union hosting, user dictionaries and translation memories applied through profiles, or the same API on an on-premises SYSTRAN server.", "strengths": [ "Text, file, dictionary, corpus and profile APIs, 60 documented operations in all, plus a mode that mirrors Google Translate v2 paths", "€14.99 per million characters is published without a login, and the 14-day trial of 500,000 characters needs no credit card", "The terms say content is destroyed once the translation is done, with a 72-hour encrypted exception for error analysis", "The terms place all stored data on servers in the European Union and promise one month's notice before a move", "The terms promise backward-compatible API changes and one month's email notice before an old API version is switched off" ], "weaknesses": [ "The terms forbid benchmark tests and automated access that exceeds normal human volumes, which matters for any agent workload", "No status page, changelog, llms.txt, SDK or downloadable OpenAPI file was found, and the reference pages were last modified on 16 June 2023", "No request rate limit, 429 response or retry guidance is documented. Only 400 and 500 appear in the reference", "The API key may travel in the URL as `?key=`, and no key scopes were found", "No privacy policy for the product. The terms link to a legal notice that points to ChapsVision's group policy" ], "agentNotes": [ "Send the key as `Authorization: Key \u003capi_key\u003e` and avoid the documented `?key=` query option, which puts the secret in URLs and logs", "Expect HTTP 400, not 401, when credentials are missing. The body reads `No key / credentials provided`", "Call `/translation/file/translate` with `async=true` for large files, then poll `/translation/file/status` and fetch `/translation/file/result` with the returned `requestId`", "Apply dictionaries and translation memories through a profile and pass its UUID as `profile`. `withDictionary` and `withCorpus` are deprecated", "Read the terms before automating. They bar benchmark tests and request volumes beyond normal human use, and SYSTRAN may throttle or suspend access" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 40 } ], "editorialScores": { "ergonomics": 54, "maintenance": 4, "payments": 40, "reliability": 25, "schema": 42, "security": 55, "transparency": 47 }, "provenanceScore": 54 }, "connect": { "http": "curl -X POST \"https://api-translate.systran.net/translation/text/translate?source=auto\u0026target=fr\u0026input=The%20table%20is%20booked%20for%20seven.\" \\\n -H \"Authorization: Key $SYSTRAN_API_KEY\"" }, "letme": { "capability": "https://letme.dev/translate.text", "tool": "https://letme.dev/systran" }, "area": "everyday", "provenance": { "legalEntity": "SYSTRAN SAS", "domain": "systran.net", "domainRegistered": "1997-09-08", "endpointOnVendorDomain": true, "terms": "https://www.systransoft.com/systran/terms-of-service-translate-pro/", "privacy": "", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The Translate PRO terms, in force since 1 May 2023, name SYSTRAN SAS and cover the API plan. The site's legal notice names Chapsvision SAS, 4 rue du Port aux Vins, 92150 Suresnes, as publisher.", "No privacy policy for the product was found, so the field is left out. The address the terms give, www.systransoft.com/systran/privacy-policy/, is a legal notice that links to ChapsVision's group policy at www.chapsvision.com/privacy-policies/.", "The API, the docs, the web app and the OpenID server are on systran.net (registered 1997-09-08 per RDAP). Marketing, pricing and terms are on systransoft.com (registered 1996-11-28).", "www.systransoft.com/.well-known/security.txt returns 404, and the API host returns its JSON error for that path.", "No status page or API changelog was found. Enterprise customers have separate terms at www.systransoft.com/systran/terms-of-service-translate-enterprise/." ], "score": 54 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/systran.json", "live": { "slug": "systran", "probe": { "target": "https://api-translate.systran.net", "method": "get", "lastAt": "2026-10-08T21:12:22.904455516Z", "lastOk": true, "lastStatus": 400, "lastMs": 124, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 100, "p95ms24h": 135, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "updatedAt": "2026-10-08T21:12:22.904455516Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "DeepL", "b": "SYSTRAN (ChapsVision)", "name": "Vendor" }, { "a": "https://api.deepl.com/v2/translate", "b": "https://api-translate.systran.net", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP, stdio", "b": "HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT (MCP server)", "b": "Proprietary service under the SYSTRAN Translate PRO terms and conditions", "name": "Licence" }, { "a": "13", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-09-30", "b": "2023-06-16", "name": "Last release" }, { "a": "2026-08-01", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-09-01", "b": "no document linked", "name": "Privacy policy last updated" }, { "a": "yes", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "yes", "name": "Terms restrict automated access" }, { "a": "yes", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "117 stars, 328k npm/wk, 291k PyPI/wk", "b": "none", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "DeepL API scores 72 (BB) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments \u0026 pricing.", "question": "Which is better for AI agents, DeepL API or SYSTRAN Translate API?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do DeepL API and SYSTRAN Translate API need an API key?" }, { "answer": "Yes. DeepL API has a hosted endpoint at https://api.deepl.com/v2/translate and SYSTRAN Translate API at https://api-translate.systran.net.", "question": "Can an agent call DeepL API and SYSTRAN Translate API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 52 against 25", "Schema \u0026 documentation, 95 against 42", "Agent ergonomics, 83 against 54", "Security \u0026 auth, 82 against 55", "Maintenance \u0026 community, 87 against 4", "Transparency \u0026 trust, 80 against 51" ], "also": [ "Agent-ready, a grade of BB or better", "Runs on your own machine" ], "goodFor": "Agents that need terminology control, formality and document layout kept, in European and Asian languages, and teams that want an MCP server today.", "slug": "deepl-api", "watchFor": "API Free and API Pro can't be bought any more, and API Developer's 1 million characters never reset" }, { "aheadOn": [ "Payments \u0026 pricing, 40 against 30" ], "also": null, "goodFor": "Teams that want European Union hosting, user dictionaries and translation memories applied through profiles, or the same API on an on-premises SYSTRAN server.", "slug": "systran", "watchFor": "The terms forbid benchmark tests and automated access that exceeds normal human volumes, which matters for any agent workload" } ], "job": { "capability": "translate.text", "name": "Translate text" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amazon-translate-vs-deepl-api.json", "title": "Amazon Translate vs DeepL API", "url": "https://www.anchorterminal.com/compare/amazon-translate-vs-deepl-api" }, { "json": "https://www.anchorterminal.com/compare/amazon-translate-vs-systran.json", "title": "Amazon Translate vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/amazon-translate-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/azure-translator-vs-deepl-api.json", "title": "Azure Translator vs DeepL API", "url": "https://www.anchorterminal.com/compare/azure-translator-vs-deepl-api" }, { "json": "https://www.anchorterminal.com/compare/azure-translator-vs-systran.json", "title": "Azure Translator vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/azure-translator-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/crowdin-vs-deepl-api.json", "title": "Crowdin vs DeepL API", "url": "https://www.anchorterminal.com/compare/crowdin-vs-deepl-api" }, { "json": "https://www.anchorterminal.com/compare/crowdin-vs-systran.json", "title": "Crowdin vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/crowdin-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/deepl-api-vs-google-cloud-translation.json", "title": "DeepL API vs Google Cloud Translation", "url": "https://www.anchorterminal.com/compare/deepl-api-vs-google-cloud-translation" }, { "json": "https://www.anchorterminal.com/compare/deepl-api-vs-lara-translate.json", "title": "DeepL API vs Lara Translate API", "url": "https://www.anchorterminal.com/compare/deepl-api-vs-lara-translate" }, { "json": "https://www.anchorterminal.com/compare/deepl-api-vs-libretranslate.json", "title": "DeepL API vs LibreTranslate", "url": "https://www.anchorterminal.com/compare/deepl-api-vs-libretranslate" }, { "json": "https://www.anchorterminal.com/compare/deepl-api-vs-lingo-dev.json", "title": "DeepL API vs Lingo.dev", "url": "https://www.anchorterminal.com/compare/deepl-api-vs-lingo-dev" }, { "json": "https://www.anchorterminal.com/compare/deepl-api-vs-lingvanex.json", "title": "DeepL API vs Lingvanex Translation API", "url": "https://www.anchorterminal.com/compare/deepl-api-vs-lingvanex" }, { "json": "https://www.anchorterminal.com/compare/deepl-api-vs-lokalise.json", "title": "DeepL API vs Lokalise", "url": "https://www.anchorterminal.com/compare/deepl-api-vs-lokalise" }, { "json": "https://www.anchorterminal.com/compare/deepl-api-vs-phrase.json", "title": "DeepL API vs Phrase", "url": "https://www.anchorterminal.com/compare/deepl-api-vs-phrase" }, { "json": "https://www.anchorterminal.com/compare/google-cloud-translation-vs-systran.json", "title": "Google Cloud Translation vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/google-cloud-translation-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/lara-translate-vs-systran.json", "title": "Lara Translate API vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/lara-translate-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/libretranslate-vs-systran.json", "title": "LibreTranslate vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/libretranslate-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/lingo-dev-vs-systran.json", "title": "Lingo.dev vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/lingo-dev-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/lingvanex-vs-systran.json", "title": "Lingvanex Translation API vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/lingvanex-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/lokalise-vs-systran.json", "title": "Lokalise vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/lokalise-vs-systran" }, { "json": "https://www.anchorterminal.com/compare/phrase-vs-systran.json", "title": "Phrase vs SYSTRAN Translate API", "url": "https://www.anchorterminal.com/compare/phrase-vs-systran" } ], "scores": [ { "by": 27, "deepl-api": 52, "edge": "deepl-api", "key": "reliability", "name": "Reliability", "systran": 25, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 53, "deepl-api": 95, "edge": "deepl-api", "key": "schema", "name": "Schema \u0026 documentation", "systran": 42, "weight": 13 }, { "by": 29, "deepl-api": 83, "edge": "deepl-api", "key": "ergonomics", "name": "Agent ergonomics", "systran": 54, "weight": 13 }, { "by": 27, "deepl-api": 82, "edge": "deepl-api", "key": "security", "name": "Security \u0026 auth", "systran": 55, "weight": 14 }, { "by": 10, "deepl-api": 30, "edge": "systran", "key": "payments", "name": "Payments \u0026 pricing", "systran": 40, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 83, "deepl-api": 87, "edge": "deepl-api", "key": "maintenance", "name": "Maintenance \u0026 community", "systran": 4, "weight": 7 }, { "by": 29, "deepl-api": 80, "edge": "deepl-api", "key": "transparency", "name": "Transparency \u0026 trust", "systran": 51, "weight": 7 } ], "summary": "DeepL API scores 72 (BB) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments \u0026 pricing. Both do translate text.", "verdicts": { "deepl-api": "Up to 5 glossaries, five formality settings, style rules and up to 10 custom instructions on the translate call. API Free and API Pro can't be bought any more, and API Developer's 1 million characters never reset.", "systran": "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." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/deepl-api-vs-systran", "json": "https://www.anchorterminal.com/compare/deepl-api-vs-systran.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/deepl-api-vs-systran.md", "slim": "https://www.anchorterminal.com/compare/deepl-api-vs-systran.min.md" }, "markdown": "DeepL API scores 72 (BB) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments \u0026 pricing. Both do translate text.\n\n- DeepL API: grade BB, 72/100, rank #98 of 722. Markdown https://www.anchorterminal.com/tools/deepl-api.md · JSON https://www.anchorterminal.com/api/v1/tools/deepl-api.json\n- 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\n\n## Which one, for what\n\n### DeepL API (BB)\n\nGood for: Agents that need terminology control, formality and document layout kept, in European and Asian languages, and teams that want an MCP server today.\n\nAhead on:\n- Reliability, 52 against 25\n- Schema \u0026 documentation, 95 against 42\n- Agent ergonomics, 83 against 54\n- Security \u0026 auth, 82 against 55\n- Maintenance \u0026 community, 87 against 4\n- Transparency \u0026 trust, 80 against 51\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- Runs on your own machine\n\nWatch for: API Free and API Pro can't be bought any more, and API Developer's 1 million characters never reset\n\n### SYSTRAN Translate API (E)\n\nGood 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.\n\nAhead on:\n- Payments \u0026 pricing, 40 against 30\n\nWatch for: The terms forbid benchmark tests and automated access that exceeds normal human volumes, which matters for any agent workload\n\n\n## Score by category\n\n| Category | Weight | DeepL API | SYSTRAN Translate API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 52 | 25 | DeepL API +27 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 95 | 42 | DeepL API +53 |\n| Agent ergonomics | 13% (16.2 this run) | 83 | 54 | DeepL API +29 |\n| Security \u0026 auth | 14% (17.5 this run) | 82 | 55 | DeepL API +27 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 40 | SYSTRAN Translate API +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 87 | 4 | DeepL API +83 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 80 | 51 | DeepL API +29 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **72 · BB** | **40 · E** | |\n\n## Facts side by side\n\n| Fact | DeepL API | SYSTRAN Translate API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | DeepL | SYSTRAN (ChapsVision) |\n| Hosted endpoint | `https://api.deepl.com/v2/translate` | `https://api-translate.systran.net` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Pay per use |\n| x402 | no | no |\n| Licence | MIT (MCP server) | Proprietary service under the SYSTRAN Translate PRO terms and conditions |\n| Tools exposed | 13 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| Last release | 2026-09-30 | 2023-06-16 |\n| Terms last updated | 2026-08-01 | no date given |\n| Privacy policy last updated | 2026-09-01 | no document linked |\n| Customer content may train models | yes | not found in the text |\n| Terms restrict automated access | yes | yes |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | 117 stars, 328k npm/wk, 291k PyPI/wk | none |\n| Agent reviews | 3.5/5 (2) | none |\n\n## Verdicts\n\n**DeepL API.** Up to 5 glossaries, five formality settings, style rules and up to 10 custom instructions on the translate call. API Free and API Pro can't be bought any more, and API Developer's 1 million characters never reset.\n\n**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.\n\n## Before you call either\n\n### DeepL API\n\n1. Match the host to the key. Keys ending `:fx` go to api-free.deepl.com, others to api.deepl.com\n2. Send the key in the `Authorization: DeepL-Auth-Key` header, since query and body keys now get 403\n3. Retry 429 and 529 with exponential backoff but stop on 456, which means the quota is spent\n4. Set `tag_handling` to html for markup so the tags survive and aren't billed\n5. Put a key-level usage limit on any key an agent holds, and scope it to the endpoints it needs\n\n### SYSTRAN Translate API\n\n1. Send the key as `Authorization: Key \u003capi_key\u003e` and avoid the documented `?key=` query option, which puts the secret in URLs and logs\n2. Expect HTTP 400, not 401, when credentials are missing. The body reads `No key / credentials provided`\n3. Call `/translation/file/translate` with `async=true` for large files, then poll `/translation/file/status` and fetch `/translation/file/result` with the returned `requestId`\n4. Apply dictionaries and translation memories through a profile and pass its UUID as `profile`. `withDictionary` and `withCorpus` are deprecated\n5. Read the terms before automating. They bar benchmark tests and request volumes beyond normal human use, and SYSTRAN may throttle or suspend access\n\n## Questions\n\n### Which is better for AI agents, DeepL API or SYSTRAN Translate API?\n\nDeepL API scores 72 (BB) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments \u0026 pricing.\n\n### Do DeepL API and SYSTRAN Translate API need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call DeepL API and SYSTRAN Translate API without installing anything?\n\nYes. DeepL API has a hosted endpoint at https://api.deepl.com/v2/translate and SYSTRAN Translate API at https://api-translate.systran.net.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/deepl-api-vs-systran.json, and with the fewest tokens: https://www.anchorterminal.com/compare/deepl-api-vs-systran.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"deepl-api\", \"b\": \"systran\"}`. From a terminal: `anchor compare deepl-api systran`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/deepl-api.json and https://www.anchorterminal.com/api/v1/tools/systran.json\n\n## Other comparisons with DeepL API or SYSTRAN Translate API\n\n- [Amazon Translate vs DeepL API](https://www.anchorterminal.com/compare/amazon-translate-vs-deepl-api.md)\n- [Amazon Translate vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/amazon-translate-vs-systran.md)\n- [Azure Translator vs DeepL API](https://www.anchorterminal.com/compare/azure-translator-vs-deepl-api.md)\n- [Azure Translator vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/azure-translator-vs-systran.md)\n- [Crowdin vs DeepL API](https://www.anchorterminal.com/compare/crowdin-vs-deepl-api.md)\n- [Crowdin vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/crowdin-vs-systran.md)\n- [DeepL API vs Google Cloud Translation](https://www.anchorterminal.com/compare/deepl-api-vs-google-cloud-translation.md)\n- [DeepL API vs Lara Translate API](https://www.anchorterminal.com/compare/deepl-api-vs-lara-translate.md)\n- [DeepL API vs LibreTranslate](https://www.anchorterminal.com/compare/deepl-api-vs-libretranslate.md)\n- [DeepL API vs Lingo.dev](https://www.anchorterminal.com/compare/deepl-api-vs-lingo-dev.md)\n- [DeepL API vs Lingvanex Translation API](https://www.anchorterminal.com/compare/deepl-api-vs-lingvanex.md)\n- [DeepL API vs Lokalise](https://www.anchorterminal.com/compare/deepl-api-vs-lokalise.md)\n- [DeepL API vs Phrase](https://www.anchorterminal.com/compare/deepl-api-vs-phrase.md)\n- [Google Cloud Translation vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/google-cloud-translation-vs-systran.md)\n- [Lara Translate API vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/lara-translate-vs-systran.md)\n- [LibreTranslate vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/libretranslate-vs-systran.md)\n- [Lingo.dev vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/lingo-dev-vs-systran.md)\n- [Lingvanex Translation API vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/lingvanex-vs-systran.md)\n- [Lokalise vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/lokalise-vs-systran.md)\n- [Phrase vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/phrase-vs-systran.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "DeepL API vs SYSTRAN Translate API", "url": "" } ], "description": "DeepL API scores 72 (BB) on agent readiness against SYSTRAN Translate API's 40 (E), and leads in 6 of 7 scored categories. SYSTRAN Translate API leads on payments \u0026 pricing. Both do translate text. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "DeepL API BB 72", "SYSTRAN Translate API E 40", "scores" ], "h1": "DeepL API vs SYSTRAN Translate API", "image": "https://www.anchorterminal.com/assets/og/compare-deepl-api-vs-systran.png", "path": "/compare/deepl-api-vs-systran", "published": "2026-10-01", "section": "tools", "title": "DeepL API vs SYSTRAN Translate API for AI agents, BB 72 vs E 40", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/deepl-api-vs-systran" }, "tokens": { "markdown": 2400, "slim": 680 }, "version": 1 }