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v1.59.1.0 codex: refresh model docs to GPT-5.6 family (+ max reasoning level)#2211

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v1.59.1.0 codex: refresh model docs to GPT-5.6 family (+ max reasoning level)#2211
cathrynlavery wants to merge 3 commits into
garrytan:mainfrom
cathrynlavery:cat/codex-5.6-models

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@cathrynlavery

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Documentation-only refresh of the /codex skill for the GPT-5.6 model family. No behavior change/codex still hardcodes no model and auto-uses whatever Codex's frontier default is.

What changed

  • Model & Reasoning section: names the current frontier as the GPT-5.6 family (sol > terra > luna, bare gpt-5.6 aliases to sol), while keeping the deliberate no-hardcode default.
  • -m examples: updated from the retired gpt-5.1-codex-max / gpt-5.2 to gpt-5.6-sol / gpt-5.6-luna.
  • Reasoning effort: documented the new max level 5.6 adds above xhigh. gstack wires no flag for it (per-mode defaults and the --xhigh override are unchanged); users can pass -c model_reasoning_effort=max manually.

Why

The illustrative model names had gone stale (gpt-5.2, gpt-5.1-codex-max). This keeps the docs pointing at models that actually exist without touching the auto-frontier design, so /codex still picks up future models automatically.

Mechanics

  • Edited codex/SKILL.md.tmpl, regenerated via bun run gen:skill-docs (only codex/SKILL.md changed).
  • VERSION 1.58.5.01.59.1.0 (patch; queue-advanced past PR v1.59.0.0 feat: /land skill + trunk.io merge-queue integration #1815's claimed 1.59.0.0 via gstack-next-version).
  • CHANGELOG entry added in the required release-summary format. Numbers in it are sourced from OpenAI's GPT-5.6 launch + OpenRouter and labeled as such (not gstack benchmarks).
  • bun test (skill validation + gen-docs quality) passes.

Keeps the no-hardcode default (auto-frontier). Updates the illustrative
model names in the Model & Reasoning section to the current GPT-5.6
family (sol/terra/luna, bare gpt-5.6 -> sol) and documents the new
`max` reasoning-effort level above xhigh.
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trunk-io Bot commented Jul 9, 2026

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@github-actions github-actions Bot changed the title codex: refresh model docs to GPT-5.6 family (+ max reasoning level) v1.59.1.0 codex: refresh model docs to GPT-5.6 family (+ max reasoning level) Jul 9, 2026
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