- Create an API key: OpenRouter ↗
- Open settings → OpenRouter → API key.
- Choose a model: google/gemma-4-31b-it:free · google/gemma-4-26b-a4b-it:free
- Save settings. Ask from text (OCR) / Ask from image / diagram.
Free model endpoints share account limits and can have limited capacity.
Keep your key private. Check current limits in your provider account.
Provider charges and quotas are separate from LuciQA.
OpenRouter · Official source ↗