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docs: refresh faq defaults

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Thibault Sottiaux
2025-10-20 14:52:02 -07:00
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@@ -8,7 +8,7 @@ In 2021, OpenAI released Codex, an AI system designed to generate code from natu
### Which models are supported?
We recommend using Codex with GPT-5 Codex, our best coding model. The default reasoning level is medium, and you can upgrade to high for complex tasks with the `/model` command.
We recommend using Codex with GPT-5 Codex, our best coding model. Reasoning effort is unset by default, so the provider applies its own default; set `/reasoning high` when you need extra depth.
You can also use older models by using API-based auth and launching codex with the `--model` flag.
@@ -22,7 +22,7 @@ Yes. [`codex exec`](./exec.md) runs Codex in non-interactive mode with streaming
### How do I stop Codex from editing my files?
By default, Codex can modify files in your current working directory (Auto mode). To prevent edits, run `codex` in read-only mode with the CLI flag `--sandbox read-only`. Alternatively, you can change the approval level mid-conversation with `/approvals`.
Codex starts in read-only sandbox mode with `AskForApproval::OnRequest`, so it asks before modifying your workspace. To allow automatic writes, launch with `--sandbox workspace-write` or change approvals mid-conversation with `/approvals`.
### How do I connect Codex to MCP servers?