Agent•active

Codex CLI

Codex CLI is OpenAI's open-source coding agent that runs locally in a terminal. It can inspect a repository, edit files, and run commands under configurable approval controls.

Official site RepositoryVerified Oct 3, 2026

Provider

OpenAI

Direct models

Selectable models

API integrations

Open source

Yes

Overview

Codex CLI is the local command-line client in the Codex product family. It is distributed as an Apache-2.0 licensed repository and supports macOS, Linux, and Windows.

Agent details

Type: Coding
Autonomy: Supervised
Environments: Local, Cli
Human in loop: Yes
Pricing: —
Categories: AI Coding, Open-source Coding Agents, Terminal Coding Agents

Capabilities

Repository inspectionFile editingTerminal commandsApproval controls

Models explicitly used

Shown only where current source evidence assigns a model to the product or one of its operating modes.

Modelactive

GPT-6.1 Sol

GPT-6.1 Sol is an OpenAI model positioned below Astra on price while retaining support for complex coding, computer use, reasoning, and tool-based workflows.

Selectable or integrated models

These are documented as selectable or accessible, not necessarily the product's default models.

Modelactive

GPT-6 Astra

GPT-6 Astra is OpenAI's flagship API model for complex reasoning, coding, computer use, research, and other tool-heavy professional workflows.

API integrations

APIactive

DeepSeek API

DeepSeek API provides access to the current DeepSeek V4 models through OpenAI-compatible and Anthropic-compatible interfaces.

Alternatives

Alternative relationships are editorial navigation, not rankings.

Agentactive

Claude Code

Claude Code is Anthropic's coding agent for working directly with a codebase from the terminal, supported IDEs, the web, GitHub, Slack, and other product surfaces.

Provider

Companyactive

OpenAI

OpenAI is an AI research and deployment company that develops model, developer, and coding products including the Codex product family.