Investing.com-- OpenAI agreed to buy artificial intelligence coding tool Windsurf for about $3 billion just weeks after reportedly being in talks over the deal, Bloomberg reported on Monday, citing people familiar with the matter.

The acquisition is OpenAI’s biggest to date, but has not yet closed, Bloomberg reported.

Reports in April had shown the AI startup was in talks to buy Windsurf, which was formerly known as Codeium.

But the reports had also flagged some concerns over the acquisition, given that it could put OpenAI in direct competition with several other AI coding assistant providers, many of which are backed directly by OpenAI’s Startup Fund.

Monday’s report comes just hours after OpenAI said it will dial back plans to restructure into a for-profit company, as the AI startup faces a storm of criticism and legal challenges over the move. Most notable of these is a high-profile lawsuit from co-founder Elon Musk.

The Microsoft (NASDAQ: MSFT ) and Softbank-backed AI startup is among the most valuable private companies in the world, and is at the heart of an AI boom over the past two years.