Teardown
Career layer2 essays
Recent launches and announcements, taken apart as a product manager.
Essays on Teardown
October 20262 essays
27Oct 2026
A model lineup is a pricing portfolio
OpenAI's GPT-6.1 Terra cuts price 50% while keeping the premium tier intact. The product lesson for PMs building on top of AI APIs is that model choice is cost architecture, not just capability selection.
06Oct 2026
Mistral Large 4 makes the wait part of the launch
Mistral announced a public API preview for Large 4 while saying the weights would arrive later. That staged release is a product promise about who can test what, and when.
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