AI News Summary — Week 13.2, 2026

Another busy week in AI as the competition for the enterprise market heats up. Here's what's been happening.

OpenAI Launches GPT-5.4 for Enterprise

OpenAI has released GPT-5.4, the company's most capable model yet for professional use. The new model combines advanced reasoning, coding capabilities, and the ability to autonomously operate computers and software — putting it in direct competition with Anthropic's Claude for enterprise customers.

Key features:

Agentic capabilities out of the box — the model can navigate desktops, browsers, and software autonomously without developers needing to build that infrastructure themselves
33% fewer false claims compared to GPT-5.2, and 18% fewer errors in full responses
More token-efficient — uses fewer tokens to solve problems despite a slightly higher price point
Rolling out to ChatGPT Plus, Team, and Pro subscribers, plus API access

OpenAI also launched ChatGPT for Excel and Google Sheets in beta — a version embedded directly in spreadsheets to build and analyze financial models. New integrations with FactSet, MSCI, Third Bridge, and Moody’s let teams pull market data into a single workflow.

Microsoft Partners with Anthropic for Copilot Cowork

Microsoft announced Copilot Cowork, a new set of AI agent products built in collaboration with Anthropic. The feature is designed to handle long-running, multi-step tasks — like preparing for a customer meeting by assembling a presentation, pulling financials, emailing the team, and scheduling prep time — all from a single request.

Key points:

Claude powers the reasoning behind Copilot Cowork, using the same agentic harness as Anthropic's Claude Cowork
Runs in the cloud within Microsoft 365 tenant (vs. Claude Cowork running locally)
Integrated with Microsoft's "Work IQ" — intelligence drawn from emails, files, documents, meetings, and chats
Anthropic's Claude is now available across the full Copilot Chat experience — not just Researcher and Excel features
Agent 365 (control plane for AI agents) launches May 1 at $15/user/month
Microsoft 365 E7 Frontier Worker Suite launches May 1 at $99/user/month (combining E5, Copilot, Agent 365, and security features)
80% of Fortune 500 now using Microsoft AI agents in some capacity

Microsoft's shift to a multi-model approach is notable — they're no longer exclusive to OpenAI, letting customers pick any model to power their AI assistants.

Google Gemini Reaches 750 Million Users

Google's Gemini AI platform has surpassed 750 million monthly active users as of Q4 2025, cementing its position as one of the fastest-growing AI products ever. The platform continues to expand with new models including Gemini 3.1 Pro, Flash-Lite, and Deep Think — the latter focused on science, research, and engineering challenges.

What's Hot This Week

Enterprise AI agents are the battleground — OpenAI, Anthropic, and Microsoft are all racing to capture enterprise customers with tools that can do real work
Multi-model strategies are winning — Microsoft adding Claude to Copilot shows the era of exclusive model partnerships is over
Agent governance is becoming a real concern — Microsoft launching Agent 365 shows enterprises need tools to monitor and secure AI agents just like human employees

That's it for this week. Stay tuned for more AI news next week!

Sources: Fortune, TechCrunch, Google DeepMind