Free ChatGPT
Free source (opens in a new tab)
Month
For: Trying Codex
Limits
- Desktop app only listed
- Usage limits apply
Includes
- Try Codex
No API
Coding · pricing
OpenAI Codex pricing in 2026: Free, Go, Plus, Pro, Business and API key explained
Choose Codex if you already use ChatGPT and want one coding agent across a local CLI, IDE extension, desktop app and cloud/web, with the option to pay by API instead.
- Starting price
- $8/mo (Go)
- Free option
- Yes
- Plans
- 6
- Prices checked
- Sep 29, 2026
OpenAI Codex plans and what they include
Codex usage is included in ChatGPT plans (Free, Go, Plus, Pro, Business and Enterprise/Edu), and usage limits apply on every plan. You can also use Codex with an API key and pay API rates per token. Free access exists: a Free ChatGPT plan includes Codex, though Free and Go list the desktop app only. The Codex CLI itself is open source.
The lowest paid tier is Go at $8 per month, which lists the desktop app only. Plus at $20 per month adds Codex on the CLI, IDE, web and iOS. Pro starts from $100 per month, with tiers listed at $100, $200 or $500; we could not confirm which tier maps to which usage, so we do not state one price. Business is $20 per user per month billed annually, or $25 billed monthly. Enterprise/Edu is contact sales.
OpenAI Codex plans compared
| Plan | Price | Billing | Who it is for | Key limits | API |
|---|---|---|---|---|---|
| Free ChatGPT |
Free | Monthly | Trying Codex | Desktop app only listed; Usage limits apply | No |
| Go ChatGPT |
$8/mo | Monthly | Light use | Desktop app only listed; Usage limits apply | No |
| Plus ChatGPT |
$20/mo | Monthly | Individual developers | Usage limits apply | No |
| Pro ChatGPT |
See official pricing | Monthly | Heavy individual use | Higher usage than Plus | No |
| Business ChatGPT |
$25 per user per month, billed monthly | User/month annual commitment |
Teams | Usage limits apply | No |
| API key API |
Usage-based | Usage | CI and automation | No GitHub code review or Slack | Included |
Which OpenAI Codex plan to pick
| If you | Pick | Why |
|---|---|---|
| you want to try Codex before paying | Free ($0/mo) | A Free ChatGPT plan includes Codex with usage limits. Only the desktop app is listed. |
| you have light, occasional coding tasks | Go ($8/mo) | Go gives Codex access for light use. It lists the desktop app only, with usage limits. |
| you are an individual developer who wants the CLI, IDE extension, web and iOS | Plus ($20/mo) | Plus lists Codex on CLI, IDE, web and iOS, with usage limits. |
| you hit Plus limits regularly | Pro (from $100/mo) | Pro lists higher usage than Plus. Tiers are $100, $200 or $500 per month, and the usage per tier is not confirmed. |
| you run Codex for a team | Business ($20/user/mo billed annually, $25 monthly) | Business adds workspace admin features. Usage limits still apply. |
| you run Codex in CI or automation | API key (pay per token) | You pay API rates, but GitHub code review and Slack are not available with an API key. |
What is free, what costs extra
Free access and trial
A Free ChatGPT plan includes Codex (desktop app listed).
Extra costs and taxes
API-key use is billed at API rates; Enterprise/Edu is contact sales.
Costs that are easy to miss
- API-key use is billed at API rates, so cost scales with tokens used rather than a flat fee.
- Usage limits apply on every ChatGPT plan, so heavy use can exhaust the quota.
- Business at $20 per user per month requires annual billing; monthly billing is $25 per user.
- Enterprise/Edu pricing is contact sales and is not published.
OpenAI Codex pricing and usage limits
Prices checked Sep 29, 2026 on the official US pricing page. Official pricing ↗ Prices and limits change often.
Free access and trial conditions
A Free ChatGPT plan includes Codex (desktop app listed).
Paid plans: what changes as you upgrade
Go ChatGPT
$8/mo source (opens in a new tab)
Month
For: Light use
Limits
- Desktop app only listed
- Usage limits apply
Includes
- Codex access
No API
Plus ChatGPT
$20/mo source (opens in a new tab)
Month
For: Individual developers
Limits
- Usage limits apply
Includes
- Codex on CLI, IDE, web and iOS
No API
Pro ChatGPT
See official pricing source (opens in a new tab)
Month
Seed lists tiers at $100, $200 or $500 per month; mapping of tier to usage was not confirmed, so no single price is set.
For: Heavy individual use
Limits
- Higher usage than Plus
Includes
- Codex access
No API
Business ChatGPT
$25 per user per month, billed monthly source (opens in a new tab)
User/month, annual commitment
$20 per user per month billed annually; $25 monthly.
For: Teams
Limits
- Usage limits apply
Includes
- Workspace admin features
No API
API key API
Usage-based source (opens in a new tab)
Usage
For: CI and automation
Limits
- No GitHub code review or Slack
Includes
- CLI/IDE use in CI
API included
Usage caps, credits and extra costs
API-key use is billed at API rates; Enterprise/Edu is contact sales.
How much OpenAI Codex costs per year
At the listed prices, a single user pays between $96 and $300 a year on the fixed-price plans, or nothing on the free tier within its limits. Annual billing discounts, taxes and usage-based extras are listed per plan above where the vendor publishes them.
OpenAI Codex FAQ
Which ChatGPT plans include Codex?
Free, Go, Plus, Pro, Business and Enterprise/Edu plans include Codex usage; Free and Go list the desktop app only. source (opens in a new tab)
Is Codex available on mobile?
Codex on the web and iOS is listed for the Plus plan in the seed research; other plan availability was not confirmed. source (opens in a new tab)
Is OpenAI Codex free?
Partly. A Free ChatGPT plan at $0 includes Codex with usage limits, and only the desktop app is listed. The Codex CLI is also open source.
How much is the Codex Pro plan?
Pro starts from $100 per month, with tiers listed at $100, $200 or $500. We could not confirm how usage maps to each tier, so check the official pricing page before choosing.
Is Codex cheaper with an API key than with a ChatGPT plan?
It depends on your usage. An API key bills per token at API rates with no flat fee, but it lacks cloud features such as GitHub code review and Slack. We do not have usage figures to compare the two.
What is the cheapest Codex plan with web and iOS access?
Plus at $20 per month. It lists Codex on the CLI, IDE, web and iOS, while Free and Go list the desktop app only.
More about OpenAI Codex
- Full OpenAI Codex guide: features, use cases, how-to and sources.
- OpenAI Codex alternatives with their prices.
- Best coding tools compared by price.
- LLM API token cost calculator if you pay per token instead of per seat.