Disclosure: CodeAgentChart is run by the GnamiSI team, which makes GnamiSI, one of the tools listed here. We list GnamiSI using the same fields and the same sourcing rules as every other tool. Every fact links to the official page it came from; anything we could not verify is marked Unknown.

OpenAI Codex CLI

By OpenAI · Official site ↗

Field	Detail
Pricing tiers	Included in ChatGPT plans: Free $0, Go $8/mo, Plus $20/mo, Pro $100, $200 or $500/mo; Business, Edu and Enterprise also include it. API-key use is billed at API pricing. Source: developers.openai.com/codex/pricing · Checked 2026-10-12
Free tier	Yes. Free plan: GPT-6 Luna at Standard speed in the desktop app, subject to rollout. Plus lists Codex in the CLI; the CLI is also usable with an API key. A fixed Free-plan message limit is not published. Source: developers.openai.com/codex/pricing · Checked 2026-10-12
Models	GPT-6.1 Sol, GPT-6 Sol, GPT-6 Luna, GPT-6 Astra (plus GPT-5.6 family, GPT-5.5 retiring Oct 14, 2026). With an API key, the models available to that key. Source: developers.openai.com/codex/pricing · Checked 2026-10-12
Local vs cloud	Both: local CLI/IDE/desktop chats plus Codex cloud tasks (cloud features not available with API-key auth). Source: developers.openai.com/codex/pricing · Checked 2026-10-12
Platforms	CLI, IDE extension, ChatGPT desktop app, web, iOS (Plus and up). Source: developers.openai.com/codex/pricing · Checked 2026-10-12
Key features	Local code review with /review Sandboxing and permission controls Worktrees and built-in Git tools AGENTS.md, skills, plugins, MCP Subagents and custom agents GitHub PR delegation and automatic reviews (cloud) codex exec / SDK for scripting and CI Source: developers.openai.com/codex/pricing · Checked 2026-10-12
Best for	ChatGPT subscribers who want a terminal agent plus cloud tasks and GitHub review in one plan. Source: Editorial summary of the sourced facts · Checked 2026-10-12

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