ChatGPT Credits: What They Are, What They Cost and When to Buy Them

ChatGPT credits are a pay-as-you-go balance that lets Plus and Pro subscribers keep using Codex, ChatGPT Work, Word, Excel and PowerPoint after their plan's included limits run out. Your plan's usage is always spent first. Credits only start draining after that, and they last 12 months. OpenAI's pricing pages never say what one costs in dollars, but its own figures put the price at $0.04 per credit.

That missing number is why so many people search for it. This guide works out the price from OpenAI's published figures and converts the rate cards into real money for common tasks. It also covers what credits are not for, such as ordinary Chat and the OpenAI API, and ends with a simple test for whether to top up or upgrade to Pro.

The Key Takeaways

• What they cover: ChatGPT credits pay for Codex, ChatGPT Work, Word, Excel and PowerPoint after your plan limit. Ordinary Chat is not on that list, and they are not API credits.
• The price: OpenAI's pricing pages give no dollar rate, but its student offer calls 2,500 credits "equivalent to $100". That is $0.04 per credit, the API list price in another unit.
• Real costs: a typical Excel message uses 5 to 20 credits (about $0.20 to $0.80), a PowerPoint message 10 to 50 (about $0.40 to $2.00).
• No reset: credits do not reset like plan limits. They expire 12 months after purchase, do not roll over, and are non-refundable and non-transferable.
• Buy or upgrade: if you would top up more than about $80 a month, compare Pro before buying another bundle.

What Are ChatGPT Credits?

ChatGPT credits are a prepaid balance for OpenAI's agentic features, used only after your plan's own allowance is gone. OpenAI's help article on credits for personal plans says they "let you continue using eligible features after reaching your plan's included limits". It lists the eligible features as Codex, ChatGPT Work, Word, Excel and PowerPoint, "depending on your plan and account".

On Plus and Pro, those five features draw on one shared allowance. Codex, ChatGPT Work, the Word, Excel and PowerPoint add-ins all spend from the same agentic usage pool. A credit bought in the Codex app can fund a PowerPoint task later. Nothing about the plan itself changes when you buy credits. The plan keeps its included usage, and credits sit on top of it.

What ChatGPT Credits Do Not Cover

ChatGPT credits on a personal plan are not a way to buy more Chat messages. OpenAI's list of supported features does not include Chat, and its Pro help page says credits "do not provide additional usage for every ChatGPT model or feature". Those caps follow the separate rules in our guide to ChatGPT limits and when they reset.

ChatGPT credits are also not OpenAI API credits. The help article says so in one line: "These credits are not API credits." A developer calling the API from their own code needs a separate prepaid balance on platform.openai.com. Nothing in a Plus or Pro subscription pays for it.

Business, Enterprise and Edu workspaces use credits differently. There, a shared workspace pool can meter Chat models too: OpenAI's Business rate card charges about 10 credits per GPT-6 Sol message and 50 per GPT-6 Pro message, while Instant stays unlimited. Everything else in this guide is about personal Plus and Pro accounts unless it says otherwise.

How Much Do ChatGPT Credits Cost?

ChatGPT credits cost $0.04 each, but you will not find that figure on a pricing page. OpenAI's Codex pricing page says only that "credit purchase prices and applicable discounts depend on your plan or agreement". The purchase screen in your account shows the bundles on offer to you, and those can vary by region and plan.

Where the 4-Cent Price Comes From

Three OpenAI figures and one university price list pin the credit at 4 cents:

The student offer: OpenAI gives verified university students in the US and Canada $100 in Codex credits. Its terms say that once the offer is applied, "you should see 2,500 credits, which is equivalent to $100". That is the only place OpenAI puts a dollar value on a credit in writing, and it comes to $0.04.

Codex voice: OpenAI's Codex pricing page bills desktop voice at $0.05 per minute of a plan's usage budget, and at 1.25 credits per minute when a Plus or Pro user is spending credits. $0.05 divided by 1.25 is $0.04.

The API price list: Codex charges GPT-6 Astra at 250 credits per million input tokens and 1,250 per million output tokens. At $0.04 a credit, that is $10 and $50, exactly the GPT-6 Astra prices on OpenAI's API pricing page. GPT-6.1 Sol (50 and 250 credits, $2 and $10) and GPT-6 Luna (2.5 and 12.5 credits, $0.10 and $0.50) match the same way.

A university licence: the University of Maryland sells ChatGPT seats with monthly credit allocations. Each step up its ladder adds credits at the same rate: $70 more buys 1,750 more credits, $100 more buys 2,500, and $200 more buys 5,000. All three steps work out to 4 cents.

The practical reading: a ChatGPT credit is the OpenAI API list price in a different unit. Buying credits is neither a discount nor a markup on the API. It is the same meter, paid through your ChatGPT account.

What Common Tasks Cost in Credits

OpenAI gives typical credit ranges for several tasks. The dollar column applies the $0.04 rate.

Read the ranges as averages, not quotes. OpenAI warns that "tasks that look similar can consume different amounts of your allowance", because model choice, context, reasoning, tool use and caching all change the bill.

How ChatGPT Credits Are Calculated

ChatGPT credits are calculated from tokens. Every Codex, ChatGPT Work and Office add-in task is billed in credits per million tokens. Input, cached input and output tokens each have their own rate, set by the model that does the work. If tokens are new to you, our explainer on what AI tokens are covers the basics. Credits are simply the price tag attached to them.

The Codex and ChatGPT Work Rate Card

These are the Standard-speed rates from OpenAI's Codex pricing page, which ChatGPT Work shares.

The GPT-5.6 Sol rate is promotional: OpenAI says it is available "at least through November 21, 2026". The Word, Excel and PowerPoint add-ins bill "at API model rates" on their own list in the credits help article, which names the GPT-5.6 family plus GPT-6 Astra. On Plus and Pro, ChatGPT for Word defaults to GPT-5.6 Sol at 100 credits in and 500 out. Free and Go accounts use GPT-5.6 Luna there, at 5 and 30.

A Worked Example and the Speed Multipliers

Model choice moves the bill by two orders of magnitude. Take one Codex turn that reads 100,000 tokens of code and writes 5,000 tokens back, with no caching:

On GPT-6 Luna: 0.25 credits for the input plus 0.06 for the output, about 0.31 credits, or roughly 1 cent.

On GPT-6 Astra: 25 credits for the input plus 6.25 for the output, about 31 credits, or roughly $1.25.

Speed modes multiply that again. On purchased credits, Fast mode costs 2x the Standard rate and Ultrafast costs 6x. Among personal plans, Ultrafast is only on Pro 500 for now, and OpenAI says that at launch, buying credits on Pro 100 or Pro 200 does not unlock it. Image generation inside Codex also spends allowance "~3-5x faster on average", and draws on credits once the plan limit is gone. Picking the smallest model that can do the job is the single biggest saving available.

Do ChatGPT Credits Reset or Expire?

ChatGPT credits do not reset. They expire. Your plan's included usage refills on its own schedule, including a five-hour window for Codex on Plus, and weekly limits may also apply. Purchased credits sit in your balance until you spend them or until they hit OpenAI's cut-off: "Credits are valid for 12 months from purchase. Unused credits expire and do not roll over after the expiry date."

Three other rules from the same help article are worth knowing before you buy:

Refunds are rare. Credits are non-refundable unless the law, a contract or an approved exception says otherwise, such as a verified billing error or confirmed unauthorized use.

You cannot pass them on. Credits are "non-transferable, have no cash value, and cannot be resold or gifted".

The balance can go negative. If a task starts while you have credits and finishes after a parallel task drained them, the balance dips below zero, and your next purchase or reload pays that off first.

How to Buy ChatGPT Credits

You buy ChatGPT credits from the usage settings in ChatGPT or in the Codex app, and OpenAI also offers them at the moment you hit a limit.

1. At a limit: when Codex stops on a Plus or Pro plan, an option to add credits appears, so you can keep working without changing plan.
2. In ChatGPT: open Settings > Usage to see your balance and buy credits.
3. In the Codex app on Mac: open Usage & Billing for the same balance and the same purchase flow.
4. Automatic reload: if your account offers it, set a minimum balance, a target balance and a maximum monthly spend. OpenAI then tops you up whenever the balance drops below the minimum. Turning it on while already below the minimum can trigger a purchase straight away.

Free and Go users mostly cannot buy credits yet. OpenAI says purchases are "currently available to a limited group of Free and Go users", and that buying credits does not change the plan or raise its included limits. Gifted credits are a separate product that is still rolling out. An eligible buyer pays on the web and sends a one-time claim link. A Free, Go, Plus or Pro personal account, or the Personal workspace linked to a Business account, can redeem it within 30 days. Gifted credits then last 12 months from redemption. Business and Enterprise workspaces cannot redeem them.

Credits, Wallet, Gift Cards and API Credits Are Four Different Balances

OpenAI now runs four money-like balances that are easy to mix up, and they are not interchangeable.

Two consequences catch people out. Redeeming an OpenAI gift card adds dollars to the wallet, not credits to the usage balance, although checkout may then apply those dollars to an eligible one-time credit purchase on the web. Third-party apps connected through Sign in with ChatGPT are the second trap. Such an app can only spend your credits after your plan runs out if you have "explicitly allowed apps to use credits", and that setting is off by default. If you build your own tools, our guide to getting an AI API key explains the API side.

Should You Buy ChatGPT Credits or Upgrade to Pro?

Buy ChatGPT credits when you hit limits occasionally. Upgrade when you hit them every week. Credits are a top-up. The jump from Plus at $20 to Pro 100 at $100 a month is $80. At $0.04 a credit, $80 buys about 2,000 credits: roughly 100 to 400 Excel messages, or 130 to 1,000 typical GPT-5.6 Sol tasks in Codex. If you are weighing Pro 100 against Anthropic's $100 plan instead, ChatGPT Pro vs Claude Max compares the two.

Pro changes the shape of the limit as well as its size. As of 23 October 2026, OpenAI's Codex pricing page says "Pro plans currently have no five-hour limit", so a heavy Codex day does not stall at the same point it would on Plus. If your monthly top-ups are drifting towards $80, run the numbers in our ChatGPT Plus vs Pro comparison and the full list of ChatGPT plans and prices before you buy another bundle.

When the Job Is a Document, Not Code

Some people buy credits only because the Excel or PowerPoint add-in ran out mid-task, not because they write code. If the job is a finished deck, report or spreadsheet, Fello AI turns a chat into a PowerPoint, Word or Excel file on your Mac, iPhone or iPad. GPT, Claude and Gemini sit behind one subscription instead of three.

Conclusion

ChatGPT credits are worth buying when you need a few more Codex or Office tasks in a month, and only then. At 4 cents each they cost exactly what the API costs, they expire after a year, and they do not extend ordinary Chat. Set a monthly cap on automatic reload, pick the smallest model that does the job, and treat a habit of topping up past $80 a month as the signal to move to Pro.

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