Information checked on September 5, 2026. Rates and feature availability may change.
You already pay for ChatGPT, yet you encounter a usage limit or an option to buy credits. Before topping up, three questions are worth answering: which allowance have you exhausted, which feature do you want to keep using, and how will that additional usage be measured?
The answers depend on your plan and the tool you use. For businesses, understanding these differences helps with budgeting. For individual users, it helps determine whether a one-time purchase is worthwhile.
Subscriptions, usage limits and credits: what’s the difference?
Your subscription provides the features and usage included in your plan. Usage limits define how much you can use them. Credits pay for eligible activity billed on a consumption basis. In Work and Codex, the same number of requests can represent very different amounts of work. OpenAI’s explanation of pricing and usage
Start by identifying the result you need. Preparing for a meeting might involve summarizing a few documents, conducting detailed market research, or producing a complete briefing with several deliverables. Defining that outcome makes it easier to understand which part of the rate card applies.
How do credits work on business and education plans?
ChatGPT Business Standard and Premium seats come with included usage. Purchased credits can extend eligible features beyond those allowances. Workspace owners manage billing through their workspace settings. ChatGPT Business billing documentation
Buying additional credits is optional for Business workspaces. Without available credits, a feature that has reached its limit may remain unavailable until the included allowance resets or credits are added.
Enterprise and Edu workspaces using flexible pricing draw on a shared credit pool for advanced usage, under the terms of their agreement. Workspaces without flexible pricing remain subject to their plan limits. Check your organization’s arrangement before estimating costs. Flexible pricing for professional plans, Rate card scope
For a team, budgeting also means looking at activities: how many research tasks, visual assets or development jobs are needed each month? Headcount alone does not describe that workload.
How many credits do ChatGPT features use?
The professional rate card lists the following examples:
| ChatGPT feature | Billing unit | Approximate credits |
|---|---|---|
| Deep Research | One task | 50 |
| Image generation | One generation | 5 |
| Agent mode | One message | 30 |
These rates apply when the activity is billed in credits. They do not mean every action incurs an extra charge from the first use: included allowances and plan rules still matter. The image rate above should not be applied to image operations billed by token usage in Work and Codex. OpenAI’s professional credit rate card
Demystia’s worked example: suppose a team completes four Deep Research tasks and twelve image generations, all chargeable in credits under this table. That would consume approximately 260 credits: 200 for research and 60 for images.
This is a budgeting illustration, not a monthly bundle offered by OpenAI.
Work and Codex: costs depend on the work performed
Work and Codex distinguish between input tokens, cached input tokens and output tokens. Tokens are the units of information processed by the model; files and conversation history can also contribute to that usage.
For GPT-5.6 Terra, the published rates checked for this article are 50, 5 and 300 credits per million tokens, respectively. Work and Codex pricing
Consider a hypothetical task at the standard rate, using 20,000 uncached input tokens, 10,000 cached input tokens and 2,000 output tokens:
| Calculation | Credits |
|---|---|
| Uncached input: 20,000 ÷ 1,000,000 × 50 | 1.00 |
| Cached input: 10,000 ÷ 1,000,000 × 5 | 0.05 |
| Output: 2,000 ÷ 1,000,000 × 300 | 0.60 |
| Calculated total | 1.65 |
These token volumes are illustrative. They do not predict what a future task will consume. For a useful budget, record several representative jobs: a code fix, a document analysis and a content creation task. That gives you a starting point based on your own work.
What about ChatGPT Plus and Pro?
Credits also support certain uses on personal plans. OpenAI allows eligible features, including Codex, Work and ChatGPT for Excel, to continue beyond included allowances where available on the account. Purchasing credits keeps the existing subscription in place. These are separate from API credits and do not unlock every ChatGPT feature indiscriminately. Credit rules for personal plans
A one-off need, such as finishing an urgent report, can be assessed individually. If you regularly need extra capacity, compare your additional spending over several weeks with the subscription options actually offered to your account.
How do you turn credits into a budget?
Credit purchase prices depend on the plan or commercial agreement. Use the price applicable to your account when converting credit consumption into a monetary cost. OpenAI’s pricing guidance
The calculation is straightforward: credit pack price ÷ credits in the pack × credits consumed. Check the currency and taxes shown at checkout as well. You can then weigh the cost of a task against the time saved, the quality of the output and any revisions still needed.
Professional workspace owners can view credit balances and usage reports in billing settings. Business credits are valid for twelve months after purchase; Enterprise and Edu expiration terms depend on the agreement. Managing professional workspace credits
On eligible personal accounts, usage settings provide access to credit information. If you enable automatic reload, review its thresholds and monthly spending cap. That cap applies to automatic reloads, not one-time credit purchases. Managing credits on personal plans
Start by observing your normal workload. An estimate based on your own tasks will be more useful than a theoretical message count, especially when you move between research, creative work and development.
Sources
- OpenAI — Professional credit rate card.
- OpenAI — Flexible pricing explained.
- OpenAI — Credits for personal plans.
- OpenAI — Work and Codex pricing and usage.
- OpenAI — Business billing and seats.