🧭 THIS WEEK AT BuildProven
Howdy, a quick one this week. Claude cowork - here’s an invite for free week but i only have 3 sorry :(. Did more work on QA Architect and Claude Kit Pro this week - nearly finished/ready for release.
as usual, would love it if you could share this newsletter, give feedback via the poll at the end, or best, just hit 'reply' and tell me what you need/want with AI. I will definitely reply and try to help best i can.🧰 Worth Your Click
Here are a few things I found recently:
Anthropic released new models Mythos 5 and Fable 5. Fable is the one most people will get access to. For now, it’s included in subscriptions but only for a couple of weeks. It will then go to paid API usage which will become very expensive. Following some capacity build out by Anthropic, it will become available via subscriptions again.
The jump in coding scores is what stands out —> 70% to 80%!!
Loop Engineering - the next step of building stuff. Trying to create more automation and reduce manual inputs, prompting.
Claude for personal - free Anthropic training, base/introduction - heaps of courses for free within this site!!
🗺️ FEATURED INSIGHT
Anthropic released Cowork this year and it’s time we check out what it does.
Unlike Chat, Cowork lets Claude complete work on its own. Describe the outcome and cadence, and it takes action and keeps you informed. Come back to the result.
What that actually means
Cowork lets Claude work on your computer, examples: open the apps, navigate the browser, fill the spreadsheet, organise the files. Not advice about doing it. The doing.
A few things it's built for, straight from Anthropic's own examples:
Pull this week's analytics into your standard report template
Turn a folder of receipts or screenshots into a formatted spreadsheet
Draft a quarterly report from your scattered meeting notes
Run a task on a schedule — check email every morning, pull metrics every Friday
That last one is the tell. It's not a chatbot you visit. It's a colleague you hand recurring work to.
Simple way to use it
Create or open a Cowork project
Think of it as a workspace for one job, client, project, or workflow.
Claude Projects are self-contained spaces with their own chats and knowledge base.
Give it the materials
Upload or connect the relevant files: meeting notes, docs, spreadsheets, emails, transcripts, plans.
Cowork is meant to work directly with files, folders, and apps, not just answer questions.
Tell it the outcome
Don’t say: “Analyze this.”
Say: “Create an executive summary, risk register, decision log, and follow-up email from these files.”
Let it work, then steer
It should plan, inspect the material, create outputs, and ask/flag gaps.
You review, correct, and redirect.
Reuse the workflow
Same folder structure.
Same prompt.
New project/materials each time.
Review the files in this project.
Create:
1. executive-summary.md
2. decision-log.md
3. risk-register.md
4. action-plan.md
5. follow-up-email.md
Use only the material provided. If something is missing or unclear, create a missing-context section.
Focus on decisions, risks, owners, dependencies, and next actions.
Keep the output executive-ready and concise.Weekly build logs from a 25-year program manager who codes with AI.
— Brett
👉 Hit “Reply” and share your experience — I read every one!
Picture by xxx on Unsplash.