Overview
How might we design instant translation so people can trust and act on AI output?
When to use
- Essential for global applications, multilingual platforms, and international user bases where instant language switching improves accessibility and user experience.
When to skip
- Monolingual apps with no localization budget.
- Legal text that requires certified human translation.
- Toggle that silently drops culturally specific nuance with no notice.
Rules
Language switch that clears conversation history.
No indicator of which language is active.
Machine translation with no quality disclaimer.
Toggle buried five levels deep in settings only.
Evidence
| Product | Implementation |
|---|---|
| DeepL | Instant rewrite of pasted or typed text across languages. |
| Google Translate | One-tap swap of input and output languages. |
| ChatGPT | Respond in language X on request or UI locale hint. |
| Claude | Multilingual replies with consistent thread context. |