This Week in AI: Claude Learns Excel, OpenAI Ships a Browser, and EU Sets New Reporting Rules

Date: October 28, 2025

AI didn’t take a day off. Here are the shifts that matter for builders, marketers, and ops leads—and how to use them.

1) Claude gets serious about spreadsheets (and memory)

Anthropic rolled out a Finance-focused update with an Excel add-in, real-time market data connectors, and pre-built “Agent Skills” (think: DCF models and coverage reports). Translation: more analyst-grade workflows without leaving your workbook. Anthropic

Separately, Claude’s memory feature—already in enterprise—expanded to more paid tiers, letting the assistant carry context between chats with clear controls to view, edit, or delete what’s saved. If you’ve avoided AI because of the “start over every time” tax, this chips away at it. The Verge

Why it matters: Marketing teams living in sheets (budgets, cohorts, ROAS slices) can now offload more analysis to agents without brittle CSV exports. Memory means faster iteration on brand voice, ad angles, and recurring briefs.

2) OpenAI launches a browser with ChatGPT built in

OpenAI announced ChatGPT Atlas, a desktop browser that bakes ChatGPT directly into the browsing flow. Expect native “explain/summarize/automate this page” patterns to become more mainstream. OpenAI

OpenAI’s Fall slate also included platform upgrades like Sora 2 (next-gen video) and new developer capabilities shown at DevDay earlier this month. OpenAI+1

Why it matters: Research, content briefs, and competitive teardowns will compress from hours to minutes. For site owners, assume more AI-mediated reading—clear structure and schema matter even more.

3) Google/DeepMind keep threading science into AI

DeepMind highlighted work applying AI to fusion energy control and shared a Gemma-based model that helped surface a new potential cancer-therapy pathway with Yale. Not marketing tech per se, but a signal: smaller, specialized models are punching above their weight in tough domains. Google DeepMind+1

Separately, OpenFold3—an open reconstruction of AlphaFold3—launched today, widening access to state-of-the-art biomolecular predictions (with some license limits). Science News

Why it matters: Expect the “small-but-smart” model trend to continue for business use cases—niche models fine-tuned on your domain data, not just giant generalists.

4) Meta restructures its AI push

Meta is cutting ~600 roles in its Superintelligence Labs to “move faster,” even as it continues massive capex on AI infrastructure. The signal is mixed: big spending continues, but org charts are shifting. Reuters+1

Why it matters: For marketers riding the Llama ecosystem, roadmap volatility is real; hedge with multi-model tooling where you can.

5) EU AI Act: fresh guidance on incident reporting

The European Commission published draft guidance on reporting “serious AI incidents” under Article 73 of the AI Act—open for comment until November 7. If you operate or sell into the EU, bookmark this. Latham & Watkins

Why it matters: Compliance workstreams aren’t optional anymore. Build basic incident logging into your AI automations (prompts, data sources, fallbacks, human handoff) now, not later.