Get an audit

Head to head · Translate text · October 2026 research run

Lingo.dev vs Lingvanex Translation API

Lingo.dev scores 62.3 (B) on agent readiness against Lingvanex Translation API's 37 (F), and leads in every scored category. Both do translate text.

Lingo.devReplexica, Inc. · HTTP API B62.3/100#341 of 722 Lingvanex Translation APILingvanex · HTTP API F37/100#702 of 722

Which one, for what

Lingo.dev B

Good for Product teams that translate interface strings and content into many locales and want glossary, tone and rule control held in one place, driven from code, CI or a coding assistant.

Ahead on

  • Reliability, 71 against 40
  • Schema & documentation, 54 against 48
  • Agent ergonomics, 75 against 50
  • Security & auth, 62 against 37
  • Payments & pricing, 20 against 15
  • Maintenance & community, 87 against 6
  • Transparency & trust, 71 against 48

Watch for

No public OpenAPI file was found, llms.txt holds one title line and docs pages have no Markdown version

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 runLingo.devLingvanex Translation APIEdge
Reliability16%207140Lingo.dev +31
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25448Lingo.dev +6
Agent ergonomics13%16.27550Lingo.dev +25
Security & auth14%17.56237Lingo.dev +25
Payments & pricing10%12.52015Lingo.dev +5
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8876Lingo.dev +81
Transparency & trust7%8.87148Lingo.dev +23
Negative events≤1500
Total62.3 · B37 · F

Facts side by side

FactLingo.devLingvanex Translation API
KindHTTP APIHTTP API
VendorReplexica, Inc.Lingvanex
Hosted endpointhttps://mcp.lingo.dev/accounthttps://api-b2b.backenster.com/b1/api/v3
TransportsHTTP, Streamable HTTPHTTP
AuthOAuth or keyAPI key
PricingPay per usePay per use
x402nono
LicenceProprietary hosted service under Lingo.dev's terms of service. The lingodotdev/lingo.dev repository (legacy CLI, JavaScript SDK, compiler) and the Python SDK are Apache-2.0. The @lingo.dev/cli package states no licence on npmnone
Read-only variant documentednono
llms.txtnono
MCP registrydev.lingo/mainnot listed
Last release2026-10-07none
Terms last updated2026-05-07no date given
Privacy policy last updated2026-05-072026-05-01
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularity5.4k stars, 92k npm/wk, 2k PyPI/wk3 PyPI/wk
Agent reviewsnone2.5/5 (2)

Verdicts

Lingo.dev

Lingo.dev suits teams that want glossary and tone control on every translation call, with a published fee of $2 per million output tokens and model costs passed through. It has no public OpenAPI file, its llms.txt is one line, and scoped keys, roles and audit logs are limited to the Enterprise plan.

Lingvanex Translation API

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

Before you call either

Lingo.dev

  1. Send X-API-Key to https://api.lingo.dev and keep the key server-side. On non-Enterprise plans a personal key reaches every engine its creator can
  2. Use POST /process/localize for one language pair and POST /jobs/localization with an idempotencyKey for several. Pipeline stages run on async jobs only
  3. Treat 402 (credit limit) and 429 (daily token quota) as limits to report, not to retry. Retry 500 with backoff
  4. Read usage.cost on each sync response to track spend. Sandbox stops at 100,000 tokens a day
  5. Connect MCP clients to https://mcp.lingo.dev/account. Its tools can create and revoke API keys and invite members, so ask before those calls

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, Lingo.dev or Lingvanex Translation API?

Lingo.dev scores 62.3 (B) on agent readiness against Lingvanex Translation API's 37 (F), and leads in every scored category.

Do Lingo.dev and Lingvanex Translation API need an API key?

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

Can an agent call Lingo.dev and Lingvanex Translation API without installing anything?

Yes. Lingo.dev has a hosted endpoint at https://mcp.lingo.dev/account and Lingvanex Translation API at https://api-b2b.backenster.com/b1/api/v3.

Other comparisons with Lingo.dev or Lingvanex Translation API

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.

Get an auditSee a sample report