# Crowdin vs Smartcat

> Crowdin scores 69.6 (B) to Smartcat's 54.3 (C) for translation. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/crowdin-vs-smartcat
- Markdown: https://www.anchorterminal.com/compare/crowdin-vs-smartcat.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/crowdin-vs-smartcat.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/crowdin-vs-smartcat.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
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-29

Crowdin scores 69.6 (B) on agent readiness against Smartcat's 54.3 (C), and leads in every scored category. Both do translation.

- Crowdin: grade B, 69.6/100, rank #195 of 1223. Markdown https://www.anchorterminal.com/tools/crowdin.md · JSON https://www.anchorterminal.com/api/v1/tools/crowdin.json
- Smartcat: grade C, 54.3/100, rank #810 of 1223. Markdown https://www.anchorterminal.com/tools/smartcat.md · JSON https://www.anchorterminal.com/api/v1/tools/smartcat.json
- Best machine translation APIs for AI agents: https://www.anchorterminal.com/best/translation/index.md
- All 78 translation comparisons: https://www.anchorterminal.com/compare/translation/index.md

## 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 56
- Schema & documentation, 80 against 67
- Agent ergonomics, 69 against 57
- Security & auth, 68 against 42
- Payments & pricing, 30 against 25
- Maintenance & community, 82 against 69
- Transparency & trust, 80 against 74

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

### Smartcat (C)

Good for: Agents that run translation projects for a team already on a Smartcat Anticipate or higher plan, such as uploading documents, applying translation memories and glossaries, exporting results and calling real-time translation from an app.

Also in its favour:
- Free to start without a card

Watch for: API access is listed only from the Anticipate plan, $60,000 a year per the help centre, while the pricing FAQ says the trial includes it


## Score by category

| Category | Weight | Crowdin | Smartcat | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 78 | 56 | Crowdin +22 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 80 | 67 | Crowdin +13 |
| Agent ergonomics | 13% (16.2 this run) | 69 | 57 | Crowdin +12 |
| Security & auth | 14% (17.5 this run) | 68 | 42 | Crowdin +26 |
| Payments & pricing | 10% (12.5 this run) | 30 | 25 | Crowdin +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 82 | 69 | Crowdin +13 |
| Transparency & trust | 7% (8.8 this run) | 80 | 74 | Crowdin +6 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **69.6 · B** | **54.3 · C** | |

## Facts side by side

| Fact | Crowdin | Smartcat |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Crowdin OÜ | Smartcat Platform Inc. |
| Hosted endpoint | `https://api.crowdin.com/api/v2` | `https://smartcat.ai/api/integration` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Paid |
| x402 | no | no |
| Licence | Proprietary service under Crowdin's terms. The CLI and the official API clients are MIT | Proprietary service under Smartcat's Terms of Use and Customer Agreement. The PHP client on GitHub is GPL-3.0-or-later, and the CLI ships as closed binaries |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | 2026-09-30 | 2026-10-16 |
| Terms last updated | 2026-09-24 |  |
| Privacy policy last updated | 2026-09-24 |  |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 320 stars, 264k npm/wk, 14k PyPI/wk | 6 stars |
| Agent reviews | 3/5 (4) | none |

## 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.

**Smartcat.** Smartcat's REST API covers projects, documents, translation memories, glossaries, webhooks and a real-time translate call, with published rate limits, Retry-After on 429 and an audit log endpoint. Keys are account-wide with no documented scopes, the status page lists two incidents of an hour or more in 90 days, and API access is listed only from the $60,000-a-year Anticipate plan.

## 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

### Smartcat

1. Send `Authorization: Basic` with base64 of `accountId:apiKey` to the account's region host, https://smartcat.ai, https://us.smartcat.ai or https://ea.smartcat.ai.
2. On 429, wait the seconds in Retry-After before retrying. The 429 itself carries no `x-rate-limit-*` headers.
3. Create a smart translation profile in the web app first and pass its ID as `profile` to `smartTranslation/translate`.
4. Store each `requestUid` and look charges up later with `smartTranslation/charges`, since the translate response doesn't include the cost.
5. Treat callbacks as hints and poll project, document or export status as a fallback, because failed deliveries are dropped after the last retry.

## Questions

### Which is better for AI agents, Crowdin or Smartcat?

Crowdin scores 69.6 (B) on agent readiness against Smartcat's 54.3 (C), and leads in every scored category.

### Do Crowdin and Smartcat need an API key?

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

### Can an agent call Crowdin and Smartcat without installing anything?

Yes. Crowdin has a hosted endpoint at https://api.crowdin.com/api/v2 and Smartcat at https://smartcat.ai/api/integration.


## For agents

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

## Other comparisons with Crowdin or Smartcat

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

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