Claude Code, the codex train, OpenAI's Python SDK - Week of August 17, 2026

No new models this week - just four frontier labs breaking and hardening the interfaces they already shipped, from a coding tool with no source in its own repo to eleven breaking changes in one physics release.

(0:00) - Cold open

(0:42) - anthropics/claude-code - source

(1:58) - openai/codex - source

(2:59) - openai/openai-python - source

(4:00) - openai/openai-agents-python - source

(5:05) - google/adk-python - source

(6:05) - google-deepmind/mujoco - source

(7:13) - Trend watch

(7:52) - Sign-off

Sources: the labs' public GitHub — every story links its repo above. More at cortech.online/frontier-commits.