Notes on "OpenAI"

Here’s what I missed in the AI field this week — I was on holiday in Tokyo.

Two new models dropped within about 15 minutes of each other: Claude Opus 4.6 and GPT-5.3-Codex. Amp immediately adopted Opus 4.6 for its smart mode, but GPT-5.3-Codex is only available in their Codex app, not yet via the API. I believe Amp will adopt it for its deep mode once it’s generally available.

Amp is sunsetting the editor extension next month. It hasn’t been officially announced yet, but the team mentioned it in their latest Raising An Agent podcast episode. I use Amp exclusively through the editor extension, so unfortunately I’ll have to switch to the TUI version and get used to it.

Ghostty’s author Mitchell Hashimoto has been busy lately:

• Ghostty’s updated AI usage policy for contributions. More and more open source projects are drowning in AI-generated issues and PRs submitted without human review — the slop. He proposed a new policy for dealing with this trend. It’s not against AI, but makes every AI-generated contribution accountable to a human.
• Vouch, a community trust management system. A tool that puts the policy above into practice. To mitigate the slop burden, open source projects should build a network to identify trustworthy contributors.
• My AI Adoption Journey. Mitchell’s reflections on his AI adoption journey. Most of it resonates with me — and probably with every thoughtful developer.

OpenAI Codex now officially supports skills. After a few days of people finding OpenAI was quietly adopting skills¹, the announcement came today. The thread on X goes through how skills work in Codex and shows examples on how to install third-party pre-built skills like Linear and Notion.

Two baked-in skills skill-creator and skill-installer are available in Codex, making bootstrapping and installing skills easier. See details in their official documentation.

Codex’s choice of skills location is .codex/skills, joining the war with .claude/skills, .github/skills, and .agents/skills. I really want to see a unification here.