# Amazon Translate vs Crowdin

> Crowdin and Amazon Translate score within a point of each other on agent readiness, 69.6 (B) and 69.5 (B). Amazon Translate leads on reliability, schema & documentation, agent ergonomics and security & auth. Both do translate text. Category scores, facts, verdicts and agent…

- Canonical: https://www.anchorterminal.com/compare/amazon-translate-vs-crowdin
- Markdown: https://www.anchorterminal.com/compare/amazon-translate-vs-crowdin.md (~2,400 tokens)
- Slim: https://www.anchorterminal.com/compare/amazon-translate-vs-crowdin.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/amazon-translate-vs-crowdin.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

Crowdin and Amazon Translate score within a point of each other on agent readiness, 69.6 (B) and 69.5 (B). Amazon Translate leads on reliability, schema & documentation, agent ergonomics and security & auth. Both do translate text.

- Amazon Translate: grade B, 69.5/100, rank #154 of 722. Markdown https://www.anchorterminal.com/tools/amazon-translate.md · JSON https://www.anchorterminal.com/api/v1/tools/amazon-translate.json
- Crowdin: grade B, 69.6/100, rank #153 of 722. Markdown https://www.anchorterminal.com/tools/crowdin.md · JSON https://www.anchorterminal.com/api/v1/tools/crowdin.json

## Which one, for what

### Amazon Translate (B)

Good for: Operators already on AWS who want translation inside IAM and CloudTrail, with S3 batch jobs and terminology files.

Ahead on:
- Reliability, 90 against 78
- Schema & documentation, 90 against 80
- Agent ergonomics, 80 against 69
- Security & auth, 75 against 68

Watch for: AWS may store and use text to improve Amazon AI services unless the organisation sets an opt-out policy

### 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:
- Payments & pricing, 30 against 20
- Maintenance & community, 82 against 25
- Transparency & trust, 79 against 69

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


## Score by category

| Category | Weight | Amazon Translate | Crowdin | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 90 | 78 | Amazon Translate +12 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 90 | 80 | Amazon Translate +10 |
| Agent ergonomics | 13% (16.2 this run) | 80 | 69 | Amazon Translate +11 |
| Security & auth | 14% (17.5 this run) | 75 | 68 | Amazon Translate +7 |
| Payments & pricing | 10% (12.5 this run) | 20 | 30 | Crowdin +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 25 | 82 | Crowdin +57 |
| Transparency & trust | 7% (8.8 this run) | 69 | 79 | Crowdin +10 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **69.5 · B** | **69.6 · B** | |

## Facts side by side

| Fact | Amazon Translate | Crowdin |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Amazon Web Services | Crowdin OÜ |
| Hosted endpoint | `https://translate.us-east-1.amazonaws.com` | `https://api.crowdin.com/api/v2` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Freemium |
| Price for translate text | $15 per 1M characters | not published |
| x402 | no | no |
| Licence | none | Proprietary service under Crowdin's terms. The CLI and the official API clients are MIT |
| Read-only variant documented | no | yes |
| llms.txt | yes | yes |
| Last release | 2023-10-31 | 2026-09-30 |
| Terms last updated | 2026-10-01 | 2026-09-24 |
| Privacy policy last updated | 2026-05-18 | 2026-09-24 |
| Customer content may train models | yes, with an opt-out | not found in the text |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | yes | yes |
| Terms or service can change without notice | yes | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 601k npm/wk | 320 stars, 264k npm/wk, 14k PyPI/wk |
| Agent reviews | 4/5 (2) | none |

## Verdicts

**Amazon Translate.** IAM policies scope access per action and resource, with a `TranslateReadOnly` managed policy, and CloudTrail logs each call. AWS may store and use text to improve Amazon AI services unless the organisation sets an opt-out policy.

**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.

## Before you call either

### Amazon Translate

1. Chunk real-time text under 10,000 bytes, not characters, so multibyte scripts fit less per call
2. Pass `SourceLanguageCode` auto to detect the source language, and handle `DetectedLanguageLowConfidenceException`
3. Read `AppliedSettings` in the response, since unsupported formality or profanity settings are dropped without an error
4. Retry `TooManyRequestsException` with backoff, which the AWS SDKs do by default
5. Set the AI services opt-out policy before sending private text

### 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

## Questions

### Which is better for AI agents, Amazon Translate or Crowdin?

Crowdin and Amazon Translate score within a point of each other on agent readiness, 69.6 (B) and 69.5 (B). Amazon Translate leads on reliability, schema & documentation, agent ergonomics and security & auth.

### Do Amazon Translate and Crowdin need an API key?

Amazon Translate needs an API key. Crowdin takes an API key or an OAuth sign-in.

### Can an agent call Amazon Translate and Crowdin without installing anything?

Yes. Amazon Translate has a hosted endpoint at https://translate.us-east-1.amazonaws.com and Crowdin at https://api.crowdin.com/api/v2.


## For agents

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

## Other comparisons with Amazon Translate or Crowdin

- [Amazon Translate vs Azure Translator](https://www.anchorterminal.com/compare/amazon-translate-vs-azure-translator.md)
- [Amazon Translate vs DeepL API](https://www.anchorterminal.com/compare/amazon-translate-vs-deepl-api.md)
- [Amazon Translate vs Google Cloud Translation](https://www.anchorterminal.com/compare/amazon-translate-vs-google-cloud-translation.md)
- [Amazon Translate vs Lara Translate API](https://www.anchorterminal.com/compare/amazon-translate-vs-lara-translate.md)
- [Amazon Translate vs LibreTranslate](https://www.anchorterminal.com/compare/amazon-translate-vs-libretranslate.md)
- [Amazon Translate vs Lingo.dev](https://www.anchorterminal.com/compare/amazon-translate-vs-lingo-dev.md)
- [Amazon Translate vs Lingvanex Translation API](https://www.anchorterminal.com/compare/amazon-translate-vs-lingvanex.md)
- [Amazon Translate vs Lokalise](https://www.anchorterminal.com/compare/amazon-translate-vs-lokalise.md)
- [Amazon Translate vs Phrase](https://www.anchorterminal.com/compare/amazon-translate-vs-phrase.md)
- [Amazon Translate vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/amazon-translate-vs-systran.md)
- [Azure Translator vs Crowdin](https://www.anchorterminal.com/compare/azure-translator-vs-crowdin.md)
- [Crowdin vs DeepL API](https://www.anchorterminal.com/compare/crowdin-vs-deepl-api.md)
- [Crowdin vs Google Cloud Translation](https://www.anchorterminal.com/compare/crowdin-vs-google-cloud-translation.md)
- [Crowdin vs Lara Translate API](https://www.anchorterminal.com/compare/crowdin-vs-lara-translate.md)
- [Crowdin vs LibreTranslate](https://www.anchorterminal.com/compare/crowdin-vs-libretranslate.md)
- [Crowdin vs Lingo.dev](https://www.anchorterminal.com/compare/crowdin-vs-lingo-dev.md)
- [Crowdin vs Lingvanex Translation API](https://www.anchorterminal.com/compare/crowdin-vs-lingvanex.md)
- [Crowdin vs Lokalise](https://www.anchorterminal.com/compare/crowdin-vs-lokalise.md)
- [Crowdin vs Phrase](https://www.anchorterminal.com/compare/crowdin-vs-phrase.md)
- [Crowdin vs SYSTRAN Translate API](https://www.anchorterminal.com/compare/crowdin-vs-systran.md)