- Create an API key: Claude ↗
- Open settings → Claude → API key.
- Choose a model: claude-sonnet-5 · claude-sonnet-4-6 · claude-haiku-4-5-20251001
- Save settings. Ask from text (OCR) / Ask from image / diagram.
API use is billed separately from a Claude consumer plan.
Keep your key private. Check current limits in your provider account.
Provider charges and quotas are separate from LuciQA.
Claude · Official source ↗