Microsoft’s Copilot makes Anthropic’s Claude and OpenAI’s GPT team up

Microsoft’s Copilot makes Anthropic’s Claude and OpenAI’s GPT team up

By Frederic Lardinois
Publication Date: 2026-03-30 13:00:00

Microsoft’s AI strategy has, for the most part, been about using third-party large language models (LLMs). First this was mostly about using OpenAI’s GPT models, but more recently, this also included Anthropic’s Claude — and now Microsoft is using both of them in tandem to improve Copilot’s Researcher agent.

The Researcher agent, which Microsoft recommends for problems where deeper reasoning or problem solving across multiple sources is necessary, now includes an optional ‘critique’ feature. With this, GPT will write the draft, which Claude then reviews. As Microsoft notes in its announcement, this review will include checks for “accuracy, completeness, and citation integrity.”

In the future, Microsoft says, it may also give users the option to switch this flow around and have Claude write and GPT check.

Claude and GPT: Better together?

This workflow may feel a bit hacky at first, but it’s also not all that different from how developers…