notes

Writing

Notes from running agent CLIs on real hardware. Mostly investigations that started as a one-line fix and turned out to have a reason underneath.

• 10 August 2026

  Three numbers for one context window

  Claude Code assumes 200K tokens for any model it doesn't recognise — including whatever your proxy is serving. Finding the right number for GPT-5.6 meant reading the binary, and the answer turned out not to be the one in the API docs.