Microsoft is injecting new vitality into its AI assistant Copilot through a new strategic partnership with Anthropic. Starting from this Wednesday, advanced AI models from Anthropic will be officially integrated into Copilot, whereas the core technology of Copilot has mainly been provided by OpenAI until now.
This move marks the gradual breakdown of Microsoft's previous exclusive partnership with OpenAI. Just a few weeks ago, Microsoft had signed an agreement to apply Anthropic's AI technology to Office 365 applications such as Word, Excel, and Outlook. The introduction of Anthropic models into Copilot is undoubtedly a further deepening of their collaboration.
For commercial users of Copilot, this update brings greater flexibility and choice. They will be able to choose between OpenAI's deep reasoning model and Anthropic's Claude Opus4.1 and Claude Sonnet4 to complete specific advanced tasks:
Claude Opus4.1: Designed for complex reasoning, coding, and deep architectural planning, especially suitable for tasks requiring in-depth thinking and complex logic.
Claude Sonnet4: More suitable for routine development tasks, large-scale data processing, and content generation for daily and efficiency-oriented work.
Users can now flexibly use these models to assist with complex research, building custom AI tools, and enterprise-level agents according to task requirements.
