Blog

Dense business essays and tech insights, written where experience meets code.

OpenAI API Model Shutdown: IDs and Official Replacements

OpenAI API Model Shutdown: IDs and Official Replacements

Check the official shutdown date and replacement for four legacy OpenAI API models, then find, test, and safely migrate their usage.

Sep 29, 2026·5 min read

Claude API Refusal Billing Rules and Retry Audit Guide

Claude API Refusal Billing Rules and Retry Audit Guide

Learn when Claude API refusals are billed, how fallback attempts affect costs, and why HTTP 200 responses still need review.

Sep 25, 2026·7 min read

Planning a new project?

Browse the archive, or reach out for a casual chat over coffee.

View portfolio Get in touch