Microsoft is building its own GPT-4 rival, MAI-1

Microsoft is quietly building its own GPT-4 rival

According to a report from The Information, Microsoft is developing an entirely new in-house artificial intelligence language model dubbed MAI-1.

This marks the first time Microsoft has built a frontier model of this magnitude internally since investing over $10 billion into OpenAI. Until now, products like Microsoft Copilot have leaned almost entirely on OpenAI's GPT-4.

The project is spearheaded by Mustafa Suleyman, the former DeepMind co-founder and Inflection CEO whom Microsoft brought onboard in March after a $650 million talent and IP acquisition. Two Microsoft insiders confirmed that while MAI-1 may incorporate techniques from Inflection, it is an entirely new build.

MAI-1 is slated to carry roughly 500 billion parameters. That dwarfs Microsoft's smaller open-source releases like Phi-3 and places it far beyond the popular 70-billion-parameter open-source tier, putting it in direct competition with the likes of Google Gemini and GPT-4.

Why it matters

Partnering with OpenAI gave Microsoft a massive head start, but outsourcing your primary tech engine always carries long-term risk.

We think MAI-1 is Microsoft's ultimate strategic hedge. Suleyman was brought in to build serious sovereign horsepower within Redmond, ensuring the company has a safety valve if OpenAI hits technical plateaus or governance issues down the road.

For the broader industry, it is a clear signal that no matter how deep the partnership goes, big tech will always fight to control its own core stack.