Translation/localisation (Customer Experience). Translate listings and support replies while keeping brand voice consistent. Requirements: Multilingual quality; consistency. Best pick: GPT-5.2 Thinking - Strongest multilingual capabilities with brand voice preservation. Alternative: Gemini 3 Pro - Good multilingual support; strong if using Google Workspace. Budget pick: Claude Sonnet 4.5 - Reliable translations at balanced cost. Recommended models: GPT-5.2 Thinking, Gemini 3 Pro, Gemini 3 Flash, Claude Opus 4.6, Claude Sonnet 4.5. Use with caution: GPT-5.2 Instant, Claude Haiku 4.5, Grok 4.1 Fast (Non-reasoning), Llama 4 Maverick (Instruct), Llama 4 Scout (Instruct). Roles: Support & CX, Marketing. Stacks: Shopify.