Choose a file to import into the spreadsheet grid. Only .csv and .txt supported for now.
1. Enter your OpenRouter API key.
2. Choose a model (GPT-3.5, GPT-4, Claude).
3. Type prompts in the formula bar (e.g. =GPT("Summarize row 10")).
4. Upload CSV/TXT files to populate the grid.
5. Output shows in the panel on the right. Scroll & copy as needed.