OpenAI Codex CLI

by OpenAI

Open-source terminal coding agent

Pricing

Free (open source)

Difficulty

advanced

Time to Start

15 min

Privacy

high

Free Tier

Free and open-source; uses your own OpenAI API key

Limits: Unlimited (API costs apply); rate limits based on OpenAI API tier

When to upgrade: N/A (open-source); upgrade OpenAI API tier for higher rate limits

Terminal-based code generation; shell command help; quick scripts; file manipulation via chat

Type: web

Offline: No

API: Yes

Languages: All major programming languages

Integrations: Terminal, Git, any CLI tool, shell scripts

Developers comfortable with terminalopen-source enthusiastsOpenAI API users

Codeshell commands

Code filesterminal outputshell commands

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