Anthropic caught up to OpenAI this fortnight. Almost nobody's noticed

Anthropic caught up to OpenAI this fortnight. Almost nobody's noticed.

That's because OpenAI made the louder noise. Codex on Mac got computer use, GPT-5.5 went underneath it, and the headlines wrote themselves. The Anthropic release was quieter and is, in my view, the bigger one for anyone running a small business: Cowork artifacts can now call MCP tools live, every time you open them. A single HTML page that's actually wired into your real tools, refreshed on each load.

I dropped a prompt on Tuesday that proves the point. It builds a live status page inside Cowork. Your calendar, email, Stripe, Drive, whatever you've connected, all in one page that pulls fresh data on open. (Hits MCP on every load.)

I've been running it every morning since. It surfaced an unanswered email from a member I'd lost in the inbox. Paid for the half day I spent building it.

It's free tier. Members can grab it now. Friday's Drop In, we'll build one for _your_ business, live.

What actually shipped

OpenAI, 16 April: Codex on Mac got the ability to see your screen, move its own cursor, click buttons and type into other apps. A week later GPT-5.5 went in underneath it. 88.7% on SWE-bench Verified, 60% fewer hallucinations than 5.4. Three million weekly Codex users now, roughly 5x growth in three months. Computer use isn't available in the EU, UK or Switzerland. Australia's fine.

Anthropic, rolling: Cowork moved to Pro plans. Cowork artifacts can call MCP tools every time the artifact opens, which is the part that should make people sit up. Up till now, an artifact was a one-shot HTML page. Now it's a live dashboard that hits your real APIs on every load.

What most people are missing

Computer-use is the better demo, and the more fragile system. The minute a button moves or a popup appears, the flow goes sideways. Useful for one-off jobs and UI testing. Risky for anything you run every day.

Cowork artifacts pulling live data through MCP look boring next to a robot mouse. They're holding up in production though, because they speak to APIs and APIs hold their shape.

The depth most people aren't seeing yet is what you can build on top of that. Picture a Mac Mini in the office. One Cowork window open. Every overnight Stripe charge, the last 24 hours of email, the day's calendar, all pulled live and surfaced before the team walks in. A working business cockpit you wrote in plain English on a Tuesday afternoon.

Codex couldn't hold that for long. Three days before a Gmail UI tweak would break a click path somewhere. The MCP route skips the UI entirely, which is why it holds.

For most owners reading this, the skill that matters now is briefing the agent well. Describe a workflow clearly and a CLI agent, Claude Code or Codex, both fine, will build it. That's the real edge right now. Pick one this month.

The Command Centre prompt

Properly called _"Live Today Status Page (Claude Cowork)"_ in the Academy. Built for non-technical owners.

What it does, in order:

1. Lists every MCP connector you have, grouped by domain.
2. Checks your skill files for brand colours and uses them. Falls back to a clean default if nothing's there.
3. Asks you four to six multiple-choice questions about what matters today.
4. Probes each connector with a real call before building, so it sees actual data shapes. (This was the bit that took longest to get right.)
5. Proposes 3 to 6 cards with what's wired versus read-only.
6. Builds the HTML artifact with action buttons that hit MCP directly.
7. Tells you what's working, what's read-only, and the one most important thing on the page right now.

The rule that makes it useful: it won't draw an action button it can't actually wire up. If your connector lacks a delete endpoint, the card links you out to Gmail. No fake buttons.

Free tier. Anyone with an Academy account can run it. Connect at least three MCP tools first. With one connector it's a glorified inbox. With three it starts feeling like a cockpit.

Search "Live Today Status Page" in the Academy → academy.techhorizonlabs.com/prompts

Friday's Drop In: build yours live

Two sessions on Friday 15 May, both included with Academy membership.

Operators Drop In (Strategy & Ops focus). For owners who want the dashboard pointed at the parts of the business they spend most of their week chasing.

Builders Drop In (Apps & Web focus). For people who want to extend the prompt and wire in custom MCP tools.

Same prompt, different angles. You bring your laptop and your connectors. I bring the prompt and the patience.

Sixty minutes per session. We open Cowork, run the prompt, answer the questions for _your_ business, ship a working dashboard you walk away with.

What you need:

• Claude Pro plan (Cowork is Pro-only, macOS Desktop)
• At least two MCP connectors set up. Calendar plus email is the floor. Calendar plus email plus Stripe or Xero or your CRM is much better.
• A laptop running Claude Desktop

Join us → academy.techhorizonlabs.com/membership

If you can't run Cowork yet, hit reply with what tools you use day to day and I'll send a 5-minute setup guide before Friday.

Attachment: voluntary-ai-safety-standard.pdf (2.71 MB, PDF)

Three things worth knowing this week

1. Privacy Act 10 December 2026 deadline is now seven months out. If you use AI in any decision affecting customers, you'll need to disclose it in your privacy policy. OAIC has guidance.
2. Codex computer use is genuinely good for one-shot work. UI testing, design iteration, anything you'd otherwise ask an intern to do. Don't put a recurring workflow on it.
3. Cowork is still macOS only. I get asked about Windows weekly. No date. If you're on Windows and want most of the same value, Claude Code in the terminal does the job with a bit of setup. Happy to walk anyone through.

Reply if you need help getting set up before Friday.

— Huxley Tech Horizon Labs · Tech Horizon Academy