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Twelve tasks today across five workstreams: a desktop Electron application from architecture document through Phase 1 implementation, reference data compilation and matching pipelines, patent portfolio documentation, ML pipeline evaluation and architecture work, and static site tooling improvements including unit test backfills.

Eighteen tasks today across five workstreams: a resume generator built from scratch and iterated through three major revisions, knowledge synthesis tooling enhancements, reference architecture documentation, an ML validation pipeline, and a technical article on decision fatigue in agentic coding workflows.

Nineteen tasks today across three distinct workstreams: patent figure generation, cloud certification tooling, and technical writing. The patent work dominated in volume (11 tasks) while the infrastructure design document dominated in leverage factor.

Daily accounting of what Claude Opus 4.6 built today, measured against how long a senior engineer familiar with each codebase would need for the same work. Twenty tasks across six projects. The day split between building a custom patent diagram renderer from scratch, standing up an interactive learning frontend with multiple activity modes, implementing a server-side scoring engine, writing three architecture articles, and iterating on layout engine improvements. The patent diagrammer hit the session's highest leverage at 200x.

Daily accounting of what Claude Opus 4.6 built today, measured against how long a senior engineer familiar with each codebase would need for the same work. Nine tasks across five projects. The production API implementation dominated the day in both scope and wall-clock time. Three architecture articles were written and deployed in parallel.

Daily accounting of what Claude Opus 4.6 built today. Twenty-eight tasks across seven projects. The day was dominated by standing up four product vertical websites with full AWS deployments, fixing diagram rendering issues across a large document set, and building out cloud infrastructure and backend services. This was the highest-volume day so far.

Daily accounting of what Claude Opus 4.6 built today, measured against how long a senior engineer familiar with each codebase would need for the same work. These are leverage factors, not time savings. Most of these projects are ones I would not have started without AI. The leverage factor measures how much more I can ship, not how much faster I finish.

I cloned GitHub. The result is a full-featured, single-user Git hosting platform with repository management, code browsing with syntax highlighting, pull requests with three merge strategies, issues with labels and comments, releases, search, activity feeds, insights, dark mode, and 50+ API endpoints. 111 files. 18,343 lines of code. 155 passing tests. The whole thing took 49 minutes, entirely within the scope of a Claude subscription.

Day three. Another SaaS subscription, another Single Serving Application. I've now replaced Harvest (time tracking) and Trello (project management) with AI-generated clones. Today's target: Confluence, Atlassian's knowledge management and wiki platform. Claude Opus 4.6 built a fully functional Confluence clone in 16 minutes, consuming 106,000 tokens. That's the fastest build yet, down from 18 minutes for Harvest and 19 for Trello. The pattern holds: requirements in, working application out, no human intervention needed.

Last week I had Claude Opus 4.6 and GPT-5.3-Codex race to build a Harvest clone. Claude won decisively. That experiment killed a $180/year SaaS subscription. Naturally, I started looking at my other subscriptions. Trello was next on the list. I've used it for years to manage personal projects, product roadmaps, and random ideas. Trello is a solid product, but it is also a multi-tenant, collaboration-heavy platform where I use maybe 20% of the features. A perfect candidate for a Single Serving Application. So I wrote a requirements document, handed it to Claude Opus 4.6, and walked away. 19 minutes and 137,000 tokens later, I had a fully functional Kanban board running on localhost.