Anthropic rolls back Fable 5 while Microsoft builds its own AI model | Now Shipping

Mike Belsito on this week's episode of Now Shipping covers three stories shaping how product teams build on AI.

We cover:
— Why Microsoft built its own code generation model despite investing $13 billion in OpenAI
— What the retirement of GPT-4.5 on 27 June means for product teams — and why model deprecation is now a product management problem
— How a multi-agent safety bypass led the US government to give Anthropic 90 minutes to pull its most powerful model, and what that means for teams building on single AI providers

Chapters
(01:37) Microsoft launches MAI Code One Flash
(04:22) What this means for product teams
(06:26) GPT-4.5 retirement on 27 June
(09:45) How to manage model dependencies
(10:59) Anthropic's Fable 5 pulled by US government order
(13:50) AI vendor risk as a product architecture decision
(15:38) Closing thoughts