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OpenAI · Plans

Codex pricing

Codex is included in ChatGPT's free plan; paid plans start at $8 a month (Go), up to $500 a month (Pro 500). Business seats start at $25 a seat a month, or $20 billed annually. You can also pay per token at API rates instead of subscribing.

Codex comes with ChatGPT plans and shares its usage with ChatGPT Work, or you can use it with an API key and pay per token.

Checked 21 Oct 2026 against OpenAI’s pricing page ↗

Plans at a glance

Codex plans: monthly and annual prices, and who each tier is for
TierMonthlyAnnualWho it’s for
ChatGPT FreeFreeFreeTrying Codex at no cost
ChatGPT GoThis plan may include ads$8 a monthMonthly onlyIndividuals who want more than the free plan
ChatGPT Plus$20 a monthMonthly onlyIndividuals who need more usage than Go
ChatGPT Pro 100The UK pricing page shows "From £89"$100 a monthMonthly onlyIndividuals who need more usage than Plus
ChatGPT Pro 200$200 a monthMonthly onlyIndividuals who need more usage than Pro 100
ChatGPT Pro 500Available through ChatGPT on the web at launch$500 a monthMonthly onlyThe heaviest individual users
ChatGPT Business Standard seatPer user. Minimum 2 seats in total$25 a seat a month$20 a seat a month$240 a seat a yearTeams of 2 or more
ChatGPT Business Premium seatPer user. Mix and match with Standard seats$125 a seat a month$100 a seat a month$1,200 a seat a yearTeam members who need more usage than a Business Standard seat
ChatGPT Enterprise & EduContact salesOrganisations that buy through sales
API keyPay per token at API ratesDevelopers who would rather pay per token

Prices as OpenAI lists them, in US dollars. Choose GBP in the currency menu to see OpenAI’s UK prices where we’ve checked them. Subscription prices aren’t converted.

Billing notes

  • Codex Cloud is not included with Free or Go.
  • Credit prices in USD aren't stated on the pages we checked.

Usage limits

Each tier’s limits in OpenAI’s own words. Where OpenAI publishes no number, we don’t add one.

ChatGPT Free

ChatGPT Go

  • OpenAI gives no usage figure for Go, only the word Limited. sources [1][2][3]

ChatGPT Plus

  • “Plus and Business Standard seats include limited Astra usage, with optional credits for additional usage afterward.” sources [1][3][4]
  • “Local messages and cloud chats share your plan's usage allowance. Weekly limits may also apply.” sources [1][3][4]

ChatGPT Pro 100

  • “Pro plans currently have no five-hour limit.” sources [1][3][4][5]
  • “Your plan still has an included usage allowance.” sources [1][3][4][5]
  • “Pro $100 and Pro $200 plans and Business Premium seats can use their full existing allowance for Astra.” sources [1][3][4][5]

ChatGPT Pro 200

  • “Pro plans currently have no five-hour limit.” sources [1][3][4][5]
  • “Your plan still has an included usage allowance.” sources [1][3][4][5]
  • “Pro $100 and Pro $200 plans and Business Premium seats can use their full existing allowance for Astra.” sources [1][3][4][5]

ChatGPT Pro 500

  • “Pro plans currently have no five-hour limit.” sources [1][3][4][5]
  • “Your plan still has an included usage allowance.” sources [1][3][4][5]

ChatGPT Business Standard seat

  • “Plus and Business Standard seats include limited Astra usage, with optional credits for additional usage afterward.” sources [1][3][6][7]
  • “Local messages and cloud chats share your plan's usage allowance. Weekly limits may also apply.” sources [1][3][6][7]

ChatGPT Business Premium seat

  • “5x the included usage of Standard seats, with the benefit of no 5-hour limit” sources [1][3][6][8]

ChatGPT Enterprise & Edu

  • “Enterprise/Edu users with flexible pricing have no fixed rate limits. Usage scales with credits.” sources [1][3][9]
  • “Enterprise and Edu plans without flexible pricing have the same per-seat usage limits as Plus for most features.” sources [1][3][9]

API key

  • No plan allowance: your API key's rate limits apply. sources [1][10]

How limits work

  • OpenAI: “ChatGPT Work and Codex share usage.”
  • OpenAI: “Pro plans currently have no five-hour limit.”
  • OpenAI: “Cloud tasks may use more of your allowance than local messages.”
  • OpenAI: “Local messages and cloud chats share your plan's usage allowance. Weekly limits may also apply.”

Local messages per five hours

OpenAI’s estimates of local messages per five-hour window
ModelPlusBusiness Standard seat
GPT-6 Astra5-455-45
GPT-6 Sol15-15015-150
GPT-6 Luna350-3,000350-3,000
OpenAI: “These estimates are not fixed message limits” source [1]

OpenAI's pages disagree on the GPT-6.1 Sol range, so it is not shown. GPT-5.6 ranges for Standard seats are listed separately by OpenAI and aren't repeated here.

Speed modes use your allowance faster

How many times faster each speed mode uses allowance, as OpenAI states it
Speed modeIncluded subscription usagePurchased credits / Enterprise pay as you go
Fast2.5x2x
GPT-6 Astra Ultrafast8x6x
GPT-6.1 Sol Ultrafast8x6x
Multiples of normal speed’s usage, from OpenAI’s pricing page source [1]

What each tier includes

ChatGPT Free

Free
  • Explore Codex capabilities on quick coding tasks
  • No Codex Cloud

ChatGPT Go

$8 a month
  • Use Codex for lightweight coding tasks.
  • GPT-6 Luna at Standard speed in the desktop app, subject to rollout
  • No Codex Cloud

ChatGPT Plus

$20 a month
  • Power a few focused coding sessions each week
  • Codex on the web, in the CLI, in the IDE extension, and on iOS
  • Automatic code review and Slack integration
  • Flexibly extend usage with ChatGPT credits

ChatGPT Pro 100

$100 a month
  • Everything in Plus
  • Composer predictions (beta)

ChatGPT Pro 200

$200 a month
  • Everything in Plus
  • Composer predictions (beta)

ChatGPT Pro 500

$500 a month
  • Everything in Plus
  • Ultrafast mode access
  • Composer predictions (beta)

ChatGPT Business Standard seat

$25 a seat a month
  • Larger virtual machines to run cloud chats faster
  • SAML SSO, MFA
  • No training on your business data by default
  • Codex access tokens for trusted automation

ChatGPT Business Premium seat

$125 a seat a month
  • Everything in Business Standard

ChatGPT Enterprise & Edu

Contact sales
  • Priority request processing
  • SCIM, EKM, RBAC
  • Compliance API audit logs
  • Data residency
  • Codex Security
  • Analytics dashboard and API

API key

Pay per token at API rates
  • Codex in the CLI, SDK, or IDE extension
  • No cloud-based features (GitHub code review, Slack, etc.)
  • Model availability follows the API models available to your key

Teams and seats

Codex team and enterprise tiers: seat price and seat limits
TierPriceSeats
ChatGPT Business Standard seatPer user. Minimum 2 seats in total$25 a seat a monthor $20 a seat a month billed annuallyAt least 2 seats
ChatGPT Business Premium seatPer user. Mix and match with Standard seats$125 a seat a monthor $100 a seat a month billed annuallyAt least 2 seats
ChatGPT Enterprise & EduContact salesContact salesAgreed with sales
Estimate your team’s cost

Codex vs Claude Code

Tiers paired by their US price. Where one side has nothing at that price, its cell says No equivalent.

Codex and Claude Code tiers paired by US price point
Price pointCodexClaude Code
FreeChatGPT FreeFreeNo equivalent
$8 a monthChatGPT Go$8 a monthNo equivalent
$20 a monthChatGPT Plus$20 a monthClaude Pro$20 a month
$100 a monthChatGPT Pro 100$100 a monthClaude Max 5x$100 a month
$200 a monthChatGPT Pro 200$200 a monthClaude Max 20x$200 a month
$500 a monthChatGPT Pro 500$500 a monthNo equivalent
$25 a seat a monthChatGPT Business Standard seat$25 a seat a monthClaude Team Standard seat$25 a seat a month
$125 a seat a monthChatGPT Business Premium seat$125 a seat a monthClaude Team Premium seat$125 a seat a month
EnterpriseChatGPT Enterprise & EduContact salesClaude Enterprise$20 a seat a month, billed annually, plus usage at API rates
Pay per token at API ratesAPI keyPay per token at API ratesClaude Console (API pay-as-you-go)Pay per token at API rates
See Claude Code plans →

API key

On the API key route there’s no plan: Codex is billed per token at OpenAI’s API rates.

OpenAI API rates for the models Codex uses, per million tokens
ModelInputOutput
GPT-6.1 SolPrompts over 272K tokens: $4.00 / $15.00$2.00$10.00
GPT-6 LunaPrompts over 272K tokens: $0.20 / $0.75$0.10$0.50
GPT-6 AstraPrompts over 272K tokens: $20.00 / $75.00$10.00$50.00
Per 1M tokens · US dollars, converted by the currency select · Rates shown are for prompts up to the size given; longer prompts cost more
All OpenAI API prices →

Codex plans FAQ

How much does Codex cost?

Codex is included in ChatGPT's free plan; paid plans start at $8 a month (Go), up to $500 a month (Pro 500). Business seats start at $25 a seat a month, or $20 billed annually. You can also pay per token at API rates instead of subscribing.

Is Codex free?

Yes, with limits: ChatGPT Free includes it (“Limited Codex access”). Paid plans start at $8 a month (ChatGPT Go).

How much does Codex cost on the API?

On the pay-per-token route (API key), Codex is billed at API rates, per million input / output tokens: GPT-6.1 Sol $2.00 / $10.00 for prompts up to 272K tokens ($4.00 / $15.00 over), GPT-6 Luna $0.10 / $0.50 for prompts up to 272K tokens ($0.20 / $0.75 over) and GPT-6 Astra $10.00 / $50.00 for prompts up to 272K tokens ($20.00 / $75.00 over).

All OpenAI API prices
How do Codex usage limits work?

In OpenAI's words: “ChatGPT Work and Codex share usage.” “Pro plans currently have no five-hour limit.” “Cloud tasks may use more of your allowance than local messages.” “Local messages and cloud chats share your plan's usage allowance. Weekly limits may also apply.”

How much faster do Codex speed modes use your allowance?

OpenAI's pricing page gives each mode's multiple of included subscription usage, with purchased credits or Enterprise pay as you go in brackets: Fast 2.5x (2x), GPT-6 Astra Ultrafast 8x (6x) and GPT-6.1 Sol Ultrafast 8x (6x).

How many Codex messages do you get on ChatGPT Plus?

OpenAI estimates local messages per five-hour window on ChatGPT Plus: 5-45 with GPT-6 Astra, 15-150 with GPT-6 Sol and 350-3,000 with GPT-6 Luna. OpenAI adds: “These estimates are not fixed message limits”.

Sources

OpenAI’s pages, checked 21 Oct 2026; API rates from our monthly price check.

  1. developers.openai.com/codex/pricing ↗
  2. help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-plan ↗
  3. chatgpt.com/pricing ↗
  4. help.openai.com/en/articles/20001275-chatgpt-work-and-codex ↗
  5. help.openai.com/en/articles/20001516-managing-usage-with-gpt-6-astra-in-work-and-codex ↗
  6. help.openai.com/en/articles/8792828-chatgpt-business-overview ↗
  7. help.openai.com/en/articles/12003714-chatgpt-business-models-and-limits ↗
  8. openai.com/index/premium-seats-chatgpt-business ↗
  9. help.openai.com/en/articles/8265053-what-is-chatgpt-enterprise ↗
  10. developers.openai.com/api/docs/pricing ↗
  11. platform.openai.com/docs/pricing ↗