The agent-first
spreadsheet engine.

Your agents, your spreadsheets, your apps. Together.

See the products Watch it work

Businesses run on spreadsheets.

Your apps and your agents work in every system. They can't run your spreadsheets.

Your apps

PortalWorkflowReports

REST

Your agents

ClaudeCodexCopilotGemini

MCP

CRMAPI

ERPAPI

DatabaseQuery

FilesRead

SpreadsheetsBy hand

The app shows a grid. The agent reads a file. You import, export and copy-paste.

Agents get full context. Humans keep full control.

Humans plan. Agents do. Spreadsheets show the work.

Human

Agent

Source

Plan

Collect

ERP, CRM, files

Build

Spreadsheets

Check

Review

Fix

Deliver

Because the agent runs the model, not the file.

An open spreadsheet changes three things about how your agent works.

Together

workbook, shared live

One grid, no copy and paste

The agent works where you work. It highlights the cell it means and asks in the grid, and you answer there. Nothing is exported, pasted or re-keyed.

Better agent

97%

on SpreadsheetBench, where the same model in Excel scores 15.4%

The agent that already has your code, your data and your back office gets the spreadsheet as one more thing it can run. Every write is recalculated and read back, so it verifies a result instead of hoping for one.

Fewer tokens

7×

fewer output tokens per task

A fraction of the tokens

The engine does the arithmetic, so the model does not. Fewer tokens per task means lower cost, faster answers and fewer mistakes along the way.

Proof

Same model. Different surface.

A public benchmark, the same tasks and the same models. The gap is the surface the agent works through, not the model.

How the run was made

SpreadsheetBench · verified-400

tasks solved · October 2026

SheetXL
97%
Grid Agent
91.25%
Shortcut.ai
86%
Claude Opus 4.6, bash agent
28.75%
Claude in Excel
15.36%
GPT-5.2, bash agent
14.29%

SheetXL: our SpreadsheetBench submission, November 2026. The highest score of any vendor that has published its results. Other figures from the public leaderboard (V1 Verified), which also carries higher entries with no published outputs or method.

7×fewer output tokens per task

SheetXL3.3k
Agent alone≈23.1k

Also fewer tool calls and faster per task, for the same reason.

Agent alone: Claude Code reading the file with Python, no engine. SheetXL measured per task over the same 400 SpreadsheetBench tasks, October 2026. The agent-alone figure is derived from Grid Agent's published savings over a bare Python agent and SheetXL's measured 3.0× over Grid Agent.

The question everyone asks

Why not a standalone agent, or an Excel plugin?

One never gets into the spreadsheet. The other never gets out of it.

Claim	SheetXL	Standalone agent	Excel plugin
The agent sees all of your work: your systems, your files and the live spreadsheet
You and the agent work in the same grid, live
An audit log of every change the agent made, and why
Undo any agent change, or roll back the whole session
Every change recalculated and verified by a real engine
Works with the agent you already run
Runs inside your own app
Runs on your server or air-gapped, and the file never leaves
Open UI and skills you can read, in the build that scored the benchmark

Standalone agent: Claude Code or Codex reading the file with Python. Excel plugin: Copilot, Claude in Excel.

Copilot and Claude in Excel are an agent plugged into a spreadsheet. SheetXL is a spreadsheet plugged into your agent.

It is a surface problem, not a model problem. The best model in the world working through Excel's surface scores 15.4%. The same model on SheetXL scores 97%. Better models do not change the surface.

One engine

Three ways in.

Add it where your agents, your apps or your servers already are. Same engine underneath, one file in and out.

model.xlsx

Anything wrong in Q1?C3 is hard-codedFix it →

Plugin

SheetXL for Agents

A plugin for Claude Code, Codex, Cursor and VS Code. The agent you already use gets a spreadsheet it can calculate, check and fix, on your own machine, with you in the grid beside it.

See the plugin

Your app

Component

SheetXL for Apps

An Excel-grade spreadsheet component for React. Your users and their agents work in the same spreadsheet, inside your product, not in a chat window beside it.

See the component

server

$ npx sheetxl -e "wb.getRange('Pricing!B14').getValue()" model.xlsx1,284,400$ npx sheetxl -e "wb.getRange('Inputs!B2').setValue(0.0834); wb.getRange('Pricing!B14').getValue()" model.xlsx1,311,650

Library