Agents pushed deeper into everyday work software this week — and the capital kept flowing.
Replit raises $400M at a $9B valuation
On March 11, Replit raised a $400M Series D at a $9B valuation (led by Georgian), roughly tripling its ~$3B mark from six months earlier, and announced Replit Agent 4. "Describe an app, get a working app" is one of software's hottest categories.
Microsoft unveils Copilot Cowork
On March 9, Microsoft announced Copilot Cowork, a Microsoft 365 agent for long-running, multi-step autonomous work across files — built on a multi-model architecture combining Microsoft's models with Anthropic's Claude, via the Frontier early-access program.
Claude comes to Excel and PowerPoint
On March 11, Anthropic launched Claude add-ins for Excel and PowerPoint that share context across both apps and add one-click reusable "Skills" — the agent moving into the tools knowledge workers already live in.
Legora raises $550M for legal AI
On March 10, legal-AI platform Legora raised a $550M Series D at a $5.55B valuation (led by Accel), roughly tripling its October mark to fund US expansion.
What it means if you're picking tools
Coding, office, and vertical work agents all advanced. See coding, automation, and data & spreadsheets.
Sources: Replit $9B (TechCrunch) · Copilot Cowork (Microsoft) · Claude in Excel/PowerPoint (VentureBeat) · Legora $550M (Bloomberg)