OpenAI API Cost Calculator
Free calculator for OpenAI API spendingEstimate your API bill before you build
Highlights
What you can do with it
- Estimating cost before choosing an API model
- Tracking spend while developing a feature
- Budgeting a large data processing job
How to use it
- 1 Open the calculator page in your browser
- 2 Select the OpenAI model you plan to use
- 3 Enter your expected token or request volume
- 4 Read the estimated cost
- 5 Compare models by changing the selection
Who it is for
Pros
- Free and instant, no signup
- Covers many models in one place
- Simple enough to keep open in a tab
Limitations
- It is a static page, so built-in rates may lag official pricing
- No saved scenarios or account history
- Scope is limited to OpenAI models only
What the OpenAI API Cost Calculator is
The OpenAI API Cost Calculator is a free, single-page tool for estimating what OpenAI API usage will cost. You choose a model, including GPT-4, GPT-3.5 Turbo, the fine-tuning variants, and the image and audio processing models, then enter the volume you expect to run and read the total. There is no account and no setup; you open the page and use it. The interface is deliberately plain, which is what you want from something you check twice and close. It is a helper for decisions, not a billing dashboard.
What you can do with it
- Calculate the cost of different OpenAI API models
- Compare models such as GPT-4 against GPT-3.5 Turbo
- Include fine-tuning and image or audio models in an estimate
- Sanity check a budget before development starts
Who it is for
- Developers deciding which model a feature should use
- Teams and founders costing an AI feature before committing
- Data analysts estimating a large processing job
What to watch out for
The rates live inside the page, so they can drift out of date when official pricing changes. Always confirm a number against current published pricing before you make a decision based on it. The tool also has no memory: there are no saved scenarios, no history, and no exports, so each estimate starts from scratch. Scope is limited to OpenAI's models, which means it will not help if you are comparing across providers. It is a hosted page on a third-party domain, so treat it as an aid rather than an authoritative source. When quality matters, export a small draft first to confirm the result before producing the final file.
FAQ
Is the calculator free?
Yes, it is described as a free tool for calculating OpenAI API costs.
Which models does it cover?
GPT-4, GPT-3.5 Turbo, various fine-tuning models, and image and audio processing models.
Are the rates always current?
The rates are baked into the page, so confirm against official pricing before relying on a figure.
Why it is free
What the official page says： 免费
Free limits, trial length and features are decided by the official site and can change at any time.
Product preview
Screenshot archived from the listing page, for preview only.
