How much does Codex cost?

Codex pricing, read from the vendor's page on 2026-08-21: Free — $0 /month; Go — $8 /month; Plus — $20 /month; Pro 5x — $100 /month; Pro 20x — $200 /month; Business / Enterprise — Not published; API Key — Pay only for the tokens Codex uses, based on API pricing.

Yes. Codex has a free plan (Free) — Local messages and cloud chats per 5h are not published in the limits table for Free. Voice on desktop is not available. Sites available only during public beta.. Verified against the vendor's pricing page on 2026-08-21.

What platforms does Codex support?

Codex runs on web, mac, win, linux, cli, vscode-ext.

What are the alternatives to Codex?

Similar tools in AI Coding Agents on vibedonalds: Fluree AI, Moxie Docs: Knowledgebases, box, Kastra.

What are the downsides of Codex?

Locked to OpenAI's GPT models — no Claude or Gemini out of the box. Fewer built-in customization primitives (hooks, sub-agents) than some rivals.

AI Coding Agents·Freemium·San Francisco, USA

Codex

OpenAI's coding agent — works in the terminal, IDE, and cloud, reviews GitHub pull requests, and runs on GPT-5 models.

What is Codex, in two sentences

Codex — OpenAI's coding agent — works in the terminal, IDE, and cloud, reviews GitHub pull requests, and runs on GPT-5 models. Runs one agent across CLI, IDE, desktop, and cloud — work moves between surfaces.

About Codex

Codex is OpenAI's agentic coding tool. It runs the same agent across a terminal CLI, an IDE extension, a desktop app, and a cloud environment, so work started in one surface can continue in another. It reads the shared AGENTS.md instructions file, speaks the Model Context Protocol (MCP), and can spin up a cloud code review on a GitHub pull request that comments inline and proposes fixes. Codex runs on OpenAI's GPT models — currently GPT-5.5 as the recommended frontier model — and is included with ChatGPT plans, from the free tier up through Pro.

Sources: the tool's official site, this listing

Codex pros and cons

Pros

Runs one agent across CLI, IDE, desktop, and cloud — work moves between surfaces.
Strong GitHub integration: a cloud code review on a pull request that catches real bugs and proposes fixes.
Reads the shared AGENTS.md standard and supports MCP tools.
Included with ChatGPT plans, from the free tier up through Pro.

Cons

Locked to OpenAI's GPT models — no Claude or Gemini out of the box.
Fewer built-in customization primitives (hooks, sub-agents) than some rivals.

Tagged

Supports GPT
VS Code Extension
CLI
Web-based
MCP Support
Agentic Mode
Multi-file Edits
Git Integration
Terminal Execution
Enterprise Plan
Freemium

Codex alternatives

Codex pricing

Read off the vendor’s own pricing page on 2026-08-21.

Plan	Price	Best for
Free	$0 /month	Trying Codex on quick coding tasks
Go	$8 /month	Lightweight coding tasks
Plus	$20 /month	A few focused coding sessions each week, plus Codex on web, CLI, IDE extension, and iOS
Pro 5x	$100 /month	Heavier daily coding than Plus can absorb; needed for Codex-Spark research preview
Pro 20x	$200 /month	Sustained heavy Codex work
Business / Enterprise	Not published	Teams needing SAML SSO, MFA, RBAC, SCIM, EKM, compliance and audit APIs, and Cloud-managed config
API Key	Pay only for the tokens Codex uses, based on API pricing	Automation in shared environments like CI

Full Codex pricing breakdown — limits, hidden costs, change log →

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Frequently asked questions

What is Codex?: Codex — OpenAI's coding agent — works in the terminal, IDE, and cloud, reviews GitHub pull requests, and runs on GPT-5 models.
How much does Codex cost?: Codex pricing, read from the vendor's page on 2026-08-21: Free — $0 /month; Go — $8 /month; Plus — $20 /month; Pro 5x — $100 /month; Pro 20x — $200 /month; Business / Enterprise — Not published; API Key — Pay only for the tokens Codex uses, based on API pricing.
Is Codex free?: Yes. Codex has a free plan (Free) — Local messages and cloud chats per 5h are not published in the limits table for Free. Voice on desktop is not available. Sites available only during public beta.. Verified against the vendor's pricing page on 2026-08-21.
What platforms does Codex support?: Codex runs on web, mac, win, linux, cli, vscode-ext.
What are the alternatives to Codex?: Similar tools in AI Coding Agents on vibedonalds: Fluree AI, Moxie Docs: Knowledgebases, box, Kastra.
What are the downsides of Codex?: Locked to OpenAI's GPT models — no Claude or Gemini out of the box. Fewer built-in customization primitives (hooks, sub-agents) than some rivals.