Codex Release Notes

Codex now supports

agent skills: reusable bundles of instructions (plus optional scripts and resources) that help Codex reliably complete specific tasks.
Skills are available in both the Codex CLI and IDE extensions.
You can invoke a skill explicitly by typing

$skill-name

(for example,

$skill-installer

or the experimental

$create-plan

skill after installing it), or let Codex select a skill automatically based on your prompt.
Learn more in the

skills documentation
.

Folder-based standard (agentskills.io)

Following the open

agent skills specification
, a skill is a folder with a required

SKILL.md
and optional supporting files:

my-skill/
SKILL.md       # Required: instructions + metadata
scripts/       # Optional: executable code
references/    # Optional: documentation
assets/        # Optional: templates, resources

Install skills per-user or per-repo

You can install skills for just yourself in

~/.codex/skills

, or for everyone on a project by checking them into

.codex/skills

in the repository.
Codex also ships with a few built-in system skills to get started, including

$skill-creator

and

$skill-installer
```. The

$create-plan

skill is experimental and needs to be installed (for example:

$skill-installer install https://github.com/openai/skills/tree/main/skills/.experimental/create-plan

).

#### Curated skills directory

Codex ships with a

small curated set of skills

inspired by popular workflows at OpenAI. Install them with

$skill-installer

, and expect more over time.

Original source Report a problem

GPT-5.2-Codex Release

Today we are releasing GPT-5.2-Codex, the most advanced agentic coding model yet for complex, real-world software engineering.

GPT-5.2-Codex is a version of GPT-5.2 further optimized for agentic coding in Codex, including improvements on long-horizon work through context compaction, stronger performance on large code changes like refactors and migrations, improved performance in Windows environments, and significantly stronger cybersecurity capabilities.

Starting today, the CLI and IDE Extension will default to gpt-5.2-codex for users who are signed in with ChatGPT. API access for the model will come soon.

If you have a model specified in your config.toml configuration file, you can instead try out gpt-5.2-codex for a new Codex CLI session using:

codex --model gpt-5.2-codex

You can also use the /model slash command in the CLI. In the Codex IDE Extension you can select GPT-5.2-Codex from the dropdown menu.

If you want to switch for all sessions, you can change your default model to gpt-5.2-codex by updating your config.toml configuration file:

model = "gpt-5.2-codex"

Original source Report a problem