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Costs of Using the OpenAI API

OpenAI API pricing operates on a "pay for what you use" basis, rather than a fixed monthly plan. The cost of using CopyAid primarily depends on the amount of

  • text in your source text files, or
  • text enabled by copybreaks inserted into your source text files.

The default request settings (as of version 0.8) use the GPT-4.1 model gpt-4.1. You can expect to spend approximately $0.01 per thousand words using GPT-4.1.

CopyAid will send entire files in the absence of any copybreak lines. To achieve better copyediting performance and save money, use copybreak lines and/or divide large files into smaller ones, such as by using the \input macro in LaTeX.

For more details on API pricing, visit the OpenAI API pricing page. Note that CopyAid will incur the input cost of sending the source text plus the ouput cost of any returned revised text.