feat: env-gated codex preamble stripping for benchmark runs

↗ view on GitHub · Eli Ziff · 2026-07-28 · e52c9779

MIKE_CODEX_BASE_INSTRUCTIONS replaces the Codex base prompt and
MIKE_CODEX_FEATURES_OFF disables tool-suite features via thread/start
overrides. Measured 15.8k -> 9.7k input tokens/turn on the ChatGPT
backend; the rest is server-side and not removable.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016yXxuitxX5h4wm1v88hnga
Repository eliziff/Beaver
Author Eli Ziff <eliasziff@gmail.com>
Authored
Parents 0684b794
Stats 1 file changed , +18
Part of Codex integration and hardening

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