How the limit works

Metering
5-hour message estimates per model on Plus and Business (none on Pro) + possible weekly limits; credits beyond the allowance
ChatGPT Plus: Overage
Additional ChatGPT credits can be purchasedSource
ChatGPT Pro 100: Overage
Additional ChatGPT credits can be purchasedSource
ChatGPT Pro 200: Overage
Additional ChatGPT credits can be purchasedSource
ChatGPT Pro 500: Overage
Additional ChatGPT credits can be purchasedSource
ChatGPT Business: Overage
Workspace credits can be purchased on plans with flexible pricingSource

Codex usage limits, official page

Limits by plan

Codex plans: recorded usage limits
Plan5-hour windowWeekly capOverageIncluded modelsVerified
ChatGPT Free Cite this row: ChatGPT FreeNot trackedNot trackedNot trackedGPT-6 Luna at Standard speed in the desktop app, subject to rollout1Official: Stated by the vendor on its own pricing page, docs or help center., verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Go Cite this row: ChatGPT GoNot trackedNot trackedNot trackedGPT-6 Luna at Standard speed in the desktop app, subject to rollout2Official: Stated by the vendor on its own pricing page, docs or help center., verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Plus Cite this row: ChatGPT Plus15-150 local messages (GPT-6 Sol)3Note on ChatGPT Plus, 5-hour windowOfficial: Stated by the vendor on its own pricing page, docs or help center.Weekly limits may also apply (no published number)4Official: Stated by the vendor on its own pricing page, docs or help center.Additional ChatGPT credits can be purchased5Official: Stated by the vendor on its own pricing page, docs or help center.GPT-6.1 Sol and GPT-6 Luna as named on the Plus card; the usage table also gives Plus estimates for GPT-6 Astra and GPT-6 Sol6Note on ChatGPT Plus, Included modelsOfficial: Stated by the vendor on its own pricing page, docs or help center., verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Pro 100 Cite this row: ChatGPT Pro 100No five-hour limit currently7Note on ChatGPT Pro 100, 5-hour windowOfficial: Stated by the vendor on its own pricing page, docs or help center.Weekly limits may also apply (no published number)4Official: Stated by the vendor on its own pricing page, docs or help center.Additional ChatGPT credits can be purchased5Official: Stated by the vendor on its own pricing page, docs or help center.Not tracked, verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Pro 200 Cite this row: ChatGPT Pro 200No five-hour limit currently7Note on ChatGPT Pro 200, 5-hour windowOfficial: Stated by the vendor on its own pricing page, docs or help center.Weekly limits may also apply (no published number)4Official: Stated by the vendor on its own pricing page, docs or help center.Additional ChatGPT credits can be purchased5Official: Stated by the vendor on its own pricing page, docs or help center.Not tracked, verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Pro 500 Cite this row: ChatGPT Pro 500No five-hour limit currently7Note on ChatGPT Pro 500, 5-hour windowOfficial: Stated by the vendor on its own pricing page, docs or help center.Weekly limits may also apply (no published number)4Official: Stated by the vendor on its own pricing page, docs or help center.Additional ChatGPT credits can be purchased5Official: Stated by the vendor on its own pricing page, docs or help center.Not tracked, verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Business Cite this row: ChatGPT Business15-150 local messages (GPT-6 Sol)3Note on ChatGPT Business, 5-hour windowOfficial: Stated by the vendor on its own pricing page, docs or help center.Weekly limits may also apply (no published number)4Official: Stated by the vendor on its own pricing page, docs or help center.Workspace credits can be purchased on plans with flexible pricing8Official: Stated by the vendor on its own pricing page, docs or help center.Not tracked, verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Enterprise & Edu Cite this row: ChatGPT Enterprise & EduNot trackedNot trackedNot trackedNot trackedNot tracked

Audit trail 8 sources and 6 notes. All Official: OpenAI. Accessed . Archived copies linked.

Sources for “Codex plans: recorded usage limits”

  1. OpenAI, Pricing | ChatGPT Learn$0/month Get Free GPT-6 Luna at Standard speed in the desktop app, subject to rolloutAccessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  2. OpenAI, Pricing | ChatGPT Learn$8/month Get Go GPT-6 Luna at Standard speed in the desktop app, subject to rolloutAccessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  3. OpenAI, Pricing | ChatGPT LearnGPT-6 Sol | 15-150 | 15-150Accessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  4. OpenAI, Pricing | ChatGPT LearnLocal messages and cloud chats share your plan’s usage allowance. Weekly limits may also apply.Accessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  5. OpenAI, Pricing | ChatGPT LearnChatGPT Plus and Pro users who reach their usage limit can purchase additional credits to continue working without needing to upgrade their existing plan.Accessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  6. OpenAI, Pricing | ChatGPT LearnGPT-6.1 Sol and GPT-6 Luna Flexibly extend usage with ChatGPT creditsAccessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  7. OpenAI, Pricing | ChatGPT LearnPro plans currently have no five-hour limit.Accessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  8. OpenAI, Pricing | ChatGPT LearnBusiness, Edu, and Enterprise plans with flexible pricing can purchase additional workspace credits to continue working.Accessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value

Notes on “Codex plans: recorded usage limits”

  • ChatGPT Plus, 5-hour window: Model: GPT-6 Sol. OpenAI: “These estimates are not fixed message limits”. Back to the value
  • ChatGPT Plus, Included models: OpenAI Help Center: “Plus and Business Standard seats include limited Astra usage, with optional credits for additional usage afterward.” OpenAI also says “GPT-6.1 Sol is rolling out for eligible paid plans.” The pricing page also says “GPT-5.5 retires from ChatGPT, ChatGPT Work, and Codex on all plans on October 14, 2026.” Back to the value
  • ChatGPT Pro 100, 5-hour window: OpenAI: “Weekly limits may also apply.” Back to the value
  • ChatGPT Pro 200, 5-hour window: OpenAI: “Weekly limits may also apply.” Back to the value
  • ChatGPT Pro 500, 5-hour window: OpenAI: “Weekly limits may also apply.” Back to the value
  • ChatGPT Business, 5-hour window: Model: GPT-6 Sol, Standard Business seats (the Standard Business column). OpenAI: “These estimates are not fixed message limits”. Back to the value

Vendors often describe limits loosely. Where a source gives a range or a multiplier, the table shows exactly that, with the source's own words in the source list. Values labeled Reported, Community or Measured are not the vendor's own statement.

More limit details

Codex: additional recorded limit details
PlanWhatValueNoteVerified
ChatGPT Plus Cite this row: ChatGPT Plus5-hour window5-45 local messages (GPT-6 Astra)1Note on ChatGPT Plus, ValueOfficial: Stated by the vendor on its own pricing page, docs or help center.Model: GPT-6 Astra. OpenAI: “These estimates are not fixed message limits”., verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Plus Cite this row: ChatGPT Plus5-hour window350-3,000 local messages (GPT-6 Luna)2Note on ChatGPT Plus, ValueOfficial: Stated by the vendor on its own pricing page, docs or help center.Model: GPT-6 Luna. OpenAI: “These estimates are not fixed message limits”., verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Plus Cite this row: ChatGPT Plus5-hour window15-160 local messages (GPT-6.1 Sol)3Note on ChatGPT Plus, ValueOfficial: Stated by the vendor on its own pricing page, docs or help center.Model: GPT-6.1 Sol. OpenAI: “These estimates are not fixed message limits”. OpenAI also says “GPT-6.1 Sol is rolling out for eligible paid plans.”, verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Business Cite this row: ChatGPT Business5-hour window5-45 local messages (GPT-6 Astra)1Note on ChatGPT Business, ValueOfficial: Stated by the vendor on its own pricing page, docs or help center.Model: GPT-6 Astra, Standard Business seats (the Standard Business column). OpenAI: “These estimates are not fixed message limits”., verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Business Cite this row: ChatGPT Business5-hour window350-3,000 local messages (GPT-6 Luna)2Note on ChatGPT Business, ValueOfficial: Stated by the vendor on its own pricing page, docs or help center.Model: GPT-6 Luna, Standard Business seats (the Standard Business column). OpenAI: “These estimates are not fixed message limits”., verified 17 days agoMay be outdatedAI-assisted check
ChatGPT Business Cite this row: ChatGPT Business5-hour window15-160 local messages (GPT-6.1 Sol)3Note on ChatGPT Business, ValueOfficial: Stated by the vendor on its own pricing page, docs or help center.Model: GPT-6.1 Sol, Standard Business seats (the Standard Business column). OpenAI: “These estimates are not fixed message limits”. OpenAI also says “GPT-6.1 Sol is rolling out for eligible paid plans.”, verified 17 days agoMay be outdatedAI-assisted check

Audit trail 3 sources and 6 notes. All Official: OpenAI. Accessed . Archived copies linked.

Sources for “Codex: additional recorded limit details”

  1. OpenAI, Pricing | ChatGPT LearnGPT-6 Astra | 5-45 | 5-45Accessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  2. OpenAI, Pricing | ChatGPT LearnGPT-6 Luna | 350-3,000 | 350-3,000Accessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value
  3. OpenAI, Pricing | ChatGPT LearnGPT-6.1 Sol | 15-160 | 15-160Accessed Archived copy Official: Stated by the vendor on its own pricing page, docs or help center. Back to the value

Notes on “Codex: additional recorded limit details”

  • ChatGPT Plus, Value: Model: GPT-6 Astra. OpenAI: “These estimates are not fixed message limits”. Back to the value
  • ChatGPT Plus, Value: Model: GPT-6 Luna. OpenAI: “These estimates are not fixed message limits”. Back to the value
  • ChatGPT Plus, Value: Model: GPT-6.1 Sol. OpenAI: “These estimates are not fixed message limits”. OpenAI also says “GPT-6.1 Sol is rolling out for eligible paid plans.” Back to the value
  • ChatGPT Business, Value: Model: GPT-6 Astra, Standard Business seats (the Standard Business column). OpenAI: “These estimates are not fixed message limits”. Back to the value
  • ChatGPT Business, Value: Model: GPT-6 Luna, Standard Business seats (the Standard Business column). OpenAI: “These estimates are not fixed message limits”. Back to the value
  • ChatGPT Business, Value: Model: GPT-6.1 Sol, Standard Business seats (the Standard Business column). OpenAI: “These estimates are not fixed message limits”. OpenAI also says “GPT-6.1 Sol is rolling out for eligible paid plans.” Back to the value

Codex prices by plan

Limit history

  1. BeforePro was sold as a $100 tier and a $200 tier, described as 5x or 20x more Codex usage than Plus, with five-hour message estimates listed for both; new sign-ups and upgrades to the $200 plan had been paused since September 10, 2026.

    AfterPro 100 ($100), Pro 200 ($200) and Pro 500 ($500) are on sale, and only Pro 500 includes Astra Ultrafast. New Pro 200 subscriptions that are not eligible for grandfathering get a lower allowance, and eligible existing ones move to it after October 29, 2026. Pro plans currently have no five-hour limit; weekly limits may also apply.

  2. BeforeOne ChatGPT Pro plan, at $200 a month.

    AfterTwo Pro tiers: Pro 5x at $100 a month (5x Plus Codex usage) and Pro 20x at $200 a month (20x Plus).

All changesAtom feed

Every plan side by side in the sheet

Cite this

LimitSheet, "Codex usage limits: 5-hour and weekly", verified Oct 2, 2026, https://limitsheet.com/tools/codex/limits/, CC BY 4.0

Data: CC BY 4.0. Please link to this page, where the number and its source live. To cite one table row, use the row's “Cite” link.