PromptHacker Weekly -- Issue #108
The cheapest move you can make this week saves real money: ChatGPT Go went worldwide at $8, and moving the staff who never touch the Thinking model off Plus cuts a typical team's AI bill by 40 to 60 percent with no loss of capability.
What matters today
The cheapest move you can make this week saves real money: ChatGPT Go went worldwide at $8, and moving the staff who never touch the Thinking model off Plus cuts a typical team's AI bill by 40 to 60 percent with no loss of capability.
Welcome byte
This issue gives executives a clean scan of PromptHacker Weekly -- Issue #108. Start with the quick hits, then use the companion guides for the workflows worth testing this week.
Quick Hits
OpenAI launches ChatGPT Go worldwide at $8 a month
Go went live everywhere on a $8 US price with GPT-5.2 Instant and 10x the messages, uploads, and image generations of the free tier. Read more
Copilot Agent Mode reaches Excel on desktop and Mac
Microsoft's January wave lets Copilot build pivots, formulas, and charts directly in the live worksheet, with PowerPoint following in February. Read more
Gemini's Nano Banana edits images by drawing on them
Circle, doodle, or point directly on a photo to target an edit instead of describing the region in text, live on web, Android, and iOS. Read more
ChatGPT Go Just Went Worldwide at $8: How to Cut Your Team's AI Bill by 60 Percent Without Losing Capability
The exact per-seat math that decides who should move to Go and who should stay on Plus Read more
Claude Cowork Now Runs on the $20 Plan: A Desktop Agent That Works Your Files Without the Copy-Paste Loop
What Claude Cowork is and why running it inside Claude Desktop changes how you do file work Read more
Top AI Updates
1. ChatGPT Go Just Went Worldwide at $8: How to Cut Your Team's AI Bill by 60 Percent Without Losing Capability
The exact per-seat math that decides who should move to Go and who should stay on Plus
2. Claude Cowork Now Runs on the $20 Plan: A Desktop Agent That Works Your Files Without the Copy-Paste Loop
What Claude Cowork is and why running it inside Claude Desktop changes how you do file work
3. Copilot Agent Mode Reaches Excel on Desktop and Mac: Stop Copying Output Into Cells
The difference between Copilot suggesting an analysis and Copilot building it in the cells
Pro Tip
A complete copy-paste prompt for a board summary, a competitive analysis, and a proposal
Action items:
- Copy the prompt or framework into ChatGPT, Claude, or Gemini.
- Test The Plan-First Prompt: One Habit That Kills the Revision Cycle on Complex ChatGPT Tasks on one live decision, document, or meeting artifact.
- Save the best version as a reusable team template.
Copy-ready guide The Plan-First Prompt: One Habit That Kills the Revision Cycle on Complex ChatGPT Tasks
Productivity Gem
The monthly run sequence that takes the report from raw export to finished in under 30 minutes
Action items:
- Choose one recurring workflow with a clear before and after.
- Run the Build Your Monthly Report Once, Run It Forever: A Reusable Copilot Agent Mode Workflow workflow once with real work, not sample data.
- Keep it only if it saves at least 30 minutes this week.
Put it to work Build Your Monthly Report Once, Run It Forever: A Reusable Copilot Agent Mode Workflow
Health Tip
Why a generic cold-and-heat routine ignores the one thing that should drive it: your recovery
This information is for educational purposes only and is not medical advice. Please consult a qualified healthcare professional before making changes to your health routine.
Step-by-step guide Let AI Design Your Cold Plunge and Sauna Schedule From Your Apple Watch Recovery Data
Kids Tip
Kids create a hands-on AI project: MLK Day Activity: Ask AI to Explain the Dream, Then Help Your Child Write Their Own. A parent or educator helps them build, test, and explain what the AI tool gets right and wrong.
Try the activity MLK Day Activity: Ask AI to Explain the Dream, Then Help Your Child Write Their Own
Wrap Up
Pick one workflow from this issue, run it with real work, and keep the result only if it makes the next decision clearer or faster.
About the author
Pierre has spent 25+ years building growth systems across fintech, real estate, lending, campaigns, and AI workflows, with $1.5B+ in client value delivered.
Email usThree deep dives. Four useful moves. One email worth opening.
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