The copy-localization stack
Claude writes the source, DeepL translates with a glossary, Grammarly is the last QA. Not a support chatbot.
Who owns what
Claude
The source — one English (or Spanish) master. Not the glossary engine.
Try Claude (opens in a new tab)DeepL
The translation — glossary, detect, no invented benefits. Not the brand voice rewrite.
Try DeepL (opens in a new tab)Grammarly
The QA pass — grammar and tone in the target language. Not the corpus RAG.
Try Grammarly (opens in a new tab)
How to use this stack
- Lock the source in Claude. Freeze claims. Do not translate a draft.
- DeepL with a glossary for product names. Languages you cannot review stay out.
- A native speaker or Grammarly (where it actually covers that language) marks issues.
- This is not the polyglot RAG concierge. That answers tickets. This ships marketing copy.