Free & open-source AI spreadsheet
The spreadsheet
that thinks.
Import a CSV, describe a new column in plain English, and free AI models fill in every row — right here in your browser. No accounts, no uploads, no server ever sees your data.
No sign-up · Works offline · Scales to 100k rows
Why it's different
Runs on your machine
DuckDB-WASM over OPFS keeps every sheet on-device — 100k rows, fully offline, nothing to upload.
AI columns in plain English
Describe a column, reference others as {{name}}, and batched, budget-aware jobs fill each row. Approve a cell to teach the model.
Free & open source
Apache-2.0. Use free OpenRouter models, or run fully on-device with WebLLM — zero keys, zero cost.
Your sheets
Loading your sheets…
Bring your own models
OpenRouter
Connect once to unlock free AI models. No account with us, no pasting keys.