Codex

Usage

const session = await client.createSession({
  agent: "codex",
});

Capabilities

Category	Values
Models	gpt-5.3-codex (default), gpt-5.3-codex-spark, gpt-5.2-codex, gpt-5.1-codex-max, gpt-5.2, gpt-5.1-codex-mini
Modes	read-only (default), auto, full-access
Thought levels	low, medium, high (default), xhigh