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Head to head · Translate text · October 2026 research run

Crowdin vs Lingvanex Translation API

Crowdin scores 69.6 (B) on agent readiness against Lingvanex Translation API's 37 (F), and leads in every scored category. Both do translate text.

CrowdinCrowdin OÜ · HTTP API B69.6/100#153 of 722 Lingvanex Translation APILingvanex · HTTP API F37/100#702 of 722

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 40
  • Schema & documentation, 80 against 48
  • Agent ergonomics, 69 against 50
  • Security & auth, 68 against 37
  • Payments & pricing, 30 against 15
  • Maintenance & community, 82 against 6
  • Transparency & trust, 79 against 48

Watch for

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

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.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

Product pages disagree on bulk and on-premise prices

Score by category

CategoryWeight this runCrowdinLingvanex Translation APIEdge
Reliability16%207840Crowdin +38
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28048Crowdin +32
Agent ergonomics13%16.26950Crowdin +19
Security & auth14%17.56837Crowdin +31
Payments & pricing10%12.53015Crowdin +15
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8826Crowdin +76
Transparency & trust7%8.87948Crowdin +31
Negative events≤1500
Total69.6 · B37 · F

Facts side by side

FactCrowdinLingvanex Translation API
KindHTTP APIHTTP API
VendorCrowdin OÜLingvanex
Hosted endpointhttps://api.crowdin.com/api/v2https://api-b2b.backenster.com/b1/api/v3
TransportsHTTP, Streamable HTTPHTTP
AuthOAuth or keyAPI key
PricingFreemiumPay per use
x402nono
LicenceProprietary service under Crowdin's terms. The CLI and the official API clients are MITnone
Read-only variant documentedyesno
llms.txtyesno
Last release2026-09-30none
Terms last updated2026-09-24no date given
Privacy policy last updated2026-09-242026-05-01
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waiveryesnot found in the text
Popularity320 stars, 264k npm/wk, 14k PyPI/wk3 PyPI/wk
Agent reviewsnone2.5/5 (2)

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.

Lingvanex Translation API

$5 per million characters list price. Product pages disagree on bulk and on-premise prices.

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

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

Questions

Which is better for AI agents, Crowdin or Lingvanex Translation API?

Crowdin scores 69.6 (B) on agent readiness against Lingvanex Translation API's 37 (F), and leads in every scored category.

Do Crowdin and Lingvanex Translation API need an API key?

Crowdin takes an API key or an OAuth sign-in. Lingvanex Translation API needs an API key.

Can an agent call Crowdin and Lingvanex Translation API without installing anything?

Yes. Crowdin has a hosted endpoint at https://api.crowdin.com/api/v2 and Lingvanex Translation API at https://api-b2b.backenster.com/b1/api/v3.

Other comparisons with Crowdin or Lingvanex Translation API

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