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Head to head · Translate text · October 2026 research run

Lingo.dev vs Phrase

Phrase scores 64.2 (B) on agent readiness against Lingo.dev's 62.3 (B), and leads in 3 of 7 scored categories. Lingo.dev leads on reliability and agent ergonomics. Both do translate text.

Lingo.devReplexica, Inc. · HTTP API B62.3/100#341 of 722 PhrasePhrase a.s. · HTTP API B64.2/100#285 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 55
  • Agent ergonomics, 75 against 70

Watch for

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

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

  • Schema & documentation, 87 against 54
  • Payments & pricing, 30 against 20

Also in its favour

  • Free to start without a card

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

Score by category

CategoryWeight this runLingo.devPhraseEdge
Reliability16%207155Lingo.dev +16
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25487Phrase +33
Agent ergonomics13%16.27570Lingo.dev +5
Security & auth14%17.56258Lingo.dev +4
Payments & pricing10%12.52030Phrase +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88783Lingo.dev +4
Transparency & trust7%8.87174Phrase +3
Negative events≤1500
Total62.3 · B64.2 · B

Facts side by side

FactLingo.devPhrase
KindHTTP APIHTTP API
VendorReplexica, Inc.Phrase a.s.
Hosted endpointhttps://mcp.lingo.dev/accounthttps://mcp.eu.phrase.com
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP
AuthOAuth or keyOAuth or key
PricingPay per usePaid
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 npmProprietary service under the Phrase Terms of Service. The CLI, the Strings API clients and the deprecated local MCP server on GitHub are MIT
Read-only variant documentednono
llms.txtnoyes
MCP registrydev.lingo/mainio.github.phrase/mcp
Last release2026-10-072026-10-06
Terms last updated2026-05-07no date given
Privacy policy last updated2026-05-072026-10-06
Customer content may train modelsnot found in the textyes
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingnot found in the textyes
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/wk49 stars, 40k npm/wk, 14k PyPI/wk

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.

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.

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

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

Questions

Which is better for AI agents, Lingo.dev or Phrase?

Phrase scores 64.2 (B) on agent readiness against Lingo.dev's 62.3 (B), and leads in 3 of 7 scored categories. Lingo.dev leads on reliability and agent ergonomics.

Do Lingo.dev and Phrase need an API key?

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

Can an agent call Lingo.dev and Phrase without installing anything?

Yes. Lingo.dev has a hosted endpoint at https://mcp.lingo.dev/account and Phrase at https://mcp.eu.phrase.com.

Other comparisons with Lingo.dev or Phrase

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