Endex.ai raises $14M in funding led by OpenAI Startup Fund to bring AI agents directly into Excel

A quiet experiment in the finance world just became a big headline. Endex.ai, a tech startup that’s been building an AI agent that lives inside Microsoft Excel, has raised $14 million in funding. The round was led by the OpenAI Startup Fund, signaling that even one of the most traditional tools in business—Excel—isn’t staying untouched by the AI wave.

Founded in 2022 by Tarun Amasa and Kevin Yang, Endex.ai has spent the past year working behind the scenes with financial institutions to fine-tune its product. Now it’s ready to open the gates.

“It’s official. We’ve raised $14m led by @OpenAI Startup Fund to bring AI to Excel,” Amasa announced on X. “Endex is the first AI agent to live inside Excel. For the past year, we’ve been working with financial firms. Today we’re releasing it to the world. Our capacity is limited; comment below for an early invite.”

OpenAI-Backed Endex AI Brings AI Modeling Directly into Excel—No Software Required

Endex isn’t trying to replace Excel—it’s trying to supercharge it. The tool sits inside spreadsheets and helps finance pros handle time-consuming tasks like financial modeling, data cleanup, and detailed analysis. It understands financial language, offers smart suggestions, and can even point to the source of the numbers it’s using.

The company describes its product as “an Excel-native AI Agent that accelerates financial modeling and data analysis backed by OpenAI and ChatGPT.” The idea is to give financial analysts something that feels familiar, but works smarter—without needing to switch apps or learn a new interface.

That’s part of why OpenAI’s involvement stands out. The fund’s backing sends a clear message: this isn’t a lightweight plugin or gimmick. It’s a bet that AI tools embedded directly into the apps people already use could reshape entire industries.

Unlike general-purpose tools that analyze documents or dashboards, Endex is built with finance professionals in mind. It adapts to user preferences, asks follow-up questions when things are unclear, and references sources like CapIQ, VisibleAlpha, FactSet, SEC filings, and earnings reports—key data for anyone modeling a company’s performance.

The startup is currently keeping access limited, offering early invites to help manage demand as it scales. Based on the response from the financial community so far, there’s plenty of demand. Traditional modeling work that once took hours—or longer—can now be done far faster, with a helping hand that doesn’t miss details.

Of course, Endex isn’t alone in this space. Other companies like Sinequa, Squirro, and Adarga are also working on AI-driven insights for enterprise users. But Endex’s Excel-native approach gives it an edge. There’s no learning curve, no data migration—just Excel, with a whole lot more intelligence baked in.

The fresh funding will help the company ramp up development and expand its reach. The AI agent is already live on both Mac and Windows, and with OpenAI’s support, the startup now has the firepower to scale.

For finance teams juggling massive spreadsheets and outdated models, Endex offers a different way forward—one that doesn’t ditch the old tools, but makes them smarter. And that might be the smartest move of all.