AI's December Sprint: o3, Gemini Thinking, and the Tools That Changed Everything

90-Day Health Roadmap: Feed Your Wearable Data Into ChatGPT

Export 90 days of wearable data, upload to ChatGPT-4o, and get a prioritized plan with 3 habit stacks, weekly milestones, and a stop-doing list: the difference between a resolution and a roadmap.

• Export your 90-day CSV from Apple Health (Health Export app, free) or Garmin Connect
• Write your 3 specific Q1 health goals in plain sentences
• Open ChatGPT-4o and upload the CSV file
• Paste the prompt below with your device name and goals filled in

THE PROMPT

"I'm attaching my health data export from [device]. My top goals for Q1 are [X, Y, Z]. Act as an evidence-based health coach, not a diagnostician. Identify the 2-3 metrics most worth improving and give me a specific 90-day action plan with weekly milestones. Flag where I should verify findings with my doctor."

This is not medical advice. Consult a qualified healthcare professional before making changes to your health routine.

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Ask AI to Explain Your Favorite Topic 3 Ways

• Pick any topic the child loves: dinosaurs, Minecraft, space, a sport
• Ask ChatGPT to explain it simply for a child, then in technical detail, then with a real-world example
• Read all three responses side by side and compare them
• Evaluate: which explanation is most accurate? Which is most useful for learning?

AGE 11+ PROMPT

"Explain [topic] in 3 ways: (1) simply, the way you would explain it to a 10-year-old; (2) in technical detail, as if writing for a science textbook; (3) with a real-world example that shows how it works in everyday life."

The child learns that phrasing changes AI output: the most important AI literacy concept for 2025.

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That is the January 1 edition: the last two weeks of December 2024 produced more major AI releases than most full quarters, and the ones that matter most for Q1 are already live and free.

o3 and Flash Thinking represent a step change in reasoning quality. ChatGPT Projects and Canvas represent a step change in workflow continuity. Apple Intelligence with ChatGPT in Siri closes the gap between the AI you open on your phone and the one that runs natively in your operating system. These are not incremental updates. They are the foundation on which Q1 automation builds.

If you try the delegation triage prompt this week, I would genuinely like to know which tasks topped your automation list. Hit reply and share: the patterns across readers tell a better story than any single executive's list.

December ended with the biggest AI sprint of 2024. OpenAI announced o3: a reasoning model that scored near-perfect on graduate math and outperformed every model before it on science benchmarks. Google responded the next day with Gemini 2.0 Flash Thinking, a free reasoning model that shows every step of its logic before answering. Both ship to the public this quarter.

This week, the practical priority: OpenAI Projects, now live for all plans, turns ChatGPT from a chat window into a persistent work context that remembers your files and instructions across every session. The Pro Tip this issue is a delegation planning prompt that turns your task list into a prioritized Q1 AI action plan in 5 minutes. The Productivity Gem builds a self-refreshing Monday morning briefing inside ChatGPT Projects. Every item below passes the executive test.