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Codex CLI

OpenAI’s coding helper for the terminal. Full changelog →

Main Course

Main Course · 👋 Easy read · Oct 20, 2026 · ~6 min

Closed Codex, but it’s still running? The background helper explained

Closed your terminal and found Codex still humming in the background? The Codex CLI now starts a shared background helper on its own, so your chats and remote control can share one server.

If you would rather Codex open and close with its window, one flag skips the helper for a single run and one command switches it off for good.

Read the full Main Course →

Sources

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Everything we covered, by ship date

Dailies and Snack Pack items about this tool, each linked to its official source.

Daily · Nov 2, 2026 · 🌶️🌶️Worth a look

ChatGPT and Codex will share one usage limit in December

Billing change: starting in December, Plus, Pro and Business plans get one usage allowance shared across ChatGPT and Codex. OpenAI’s Help Center page on the change went up on Oct 31, 2026, and says usage will be measured in tokens.

Source: OpenAI Help Center: understanding ChatGPT and Codex usage limits, Oct 31, 2026

Daily · Oct 28, 2026 · 🌶️🌶️Worth a look

Codex CLI gets a built-in Vertex AI provider

Codex CLI now talks to Google Cloud on its own. The latest release adds a built-in Google Cloud Vertex AI provider, set with model_provider = "gcp", and puts GPT-6.1 Terra in the model catalogs.

Source: Codex CLI 0.165.0 release notes, Oct 27, 2026

Daily · Oct 15, 2026 · 🌶️🌶️Worth a look

Codex lets you cut in mid-answer

Change your mind mid-answer and Codex listens. In the latest Codex CLI, send a follow-up while it’s still answering and it steers right away. New /config searches every setting, and independent read-only tools now run in parallel.

Source: Codex CLI 0.163.0 release notes

Daily · Oct 8, 2026 · 🌶️Nice to know

Codex sets up side workspaces for you

Run side tasks without the Git gymnastics. The new Codex CLI release can create and list managed Git worktrees from trusted local projects once the worktrees feature is on. It also lets you pin tasks in the agent Command Center with p.

Source: Codex CLI v0.162.0 release notes

Daily · Oct 7, 2026 · 🌶️🌶️Worth a look

Codex quietly moved you to GPT-6.1 Sol

Check your model: Codex now defaults to GPT-6.1 Sol. The new Codex CLI release makes it the default in the bundled and Amazon Bedrock catalogs. You can also sign in to MCP servers from a session with /mcp login <name>.

Source: Codex CLI v0.161.0 release notes

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