gotok is a lightweight command-line utility designed to count tokens in text using OpenAI's tokenization standards, making it easy to estimate input sizes for models like GPT-4o and older.

• Supports multiple OpenAI models and encodings.
• Flexible input and output options.
• Quiet mode for streamlined token counting.

• Go 1.19 or higher

Clone the repository and build the binary using Go:

git clone https://github.com/mattjoyce/gotok.git
cd gotok
go install

This will compile the gotok binary and place it in your $GOPATH/bin directory, making it accessible from your command line.

gotok [options] < [input]

• --model string
  Specifies the model to use for token embedding (default: gpt-4o). If set, the model's default encoding will be applied.

• --encoding string
  Sets a specific encoding manually, overriding the model's default. Must be one of the listed encodings (e.g., cl100k_base).

• --input string
  File path to the input text file. If both --input and stdin are provided, gotok will concatenate their contents.

• --output string
  Designates where to send the output. Choose between stderr, stdout, or specify a file path (default: stderr).

• --passthrough
  Outputs the original input text to stdout in addition to the token count. Set to false by default.

• --quiet
  Quiet mode suppresses all output except for the token count, overriding --passthrough.

• --list
  Lists the available models and encodings, providing an easy reference for compatible options.

Here is a list of available models and their associated encodings that can be used with gotok:

• code-search-ada-code-001 (r50k_base)
• code-davinci-001 (p50k_base)
• text-embedding-ada-002 (cl100k_base)
• text-similarity-curie-001 (r50k_base)
• code-search-babbage-code-001 (r50k_base)
• text-ada-001 (r50k_base)
• code-davinci-002 (p50k_base)
• text-embedding-3-small (cl100k_base)
• text-davinci-002 (p50k_base)
• ada (r50k_base)
• cushman-codex (p50k_base)
• code-davinci-edit-001 (p50k_edit)
• text-search-davinci-doc-001 (r50k_base)
• text-babbage-001 (r50k_base)
• code-cushman-002 (p50k_base)
• code-cushman-001 (p50k_base)
• text-similarity-davinci-001 (r50k_base)
• text-similarity-babbage-001 (r50k_base)
• text-similarity-ada-001 (r50k_base)
• text-search-ada-doc-001 (r50k_base)
• gpt2 (gpt2)
• davinci (r50k_base)
• babbage (r50k_base)
• text-search-curie-doc-001 (r50k_base)
• curie (r50k_base)
• davinci-codex (p50k_base)
• text-davinci-edit-001 (p50k_edit)
• text-embedding-3-large (cl100k_base)
• gpt-4 (cl100k_base)
• gpt-3.5-turbo (cl100k_base)
• text-curie-001 (r50k_base)
• text-search-babbage-doc-001 (r50k_base)
• gpt-4o (o200k_base)
• text-davinci-003 (p50k_base)
• text-davinci-001 (r50k_base)

1. Basic Usage
   Count tokens in input.txt, displaying output in stderr (default):

   gotok --input input.txt

2. Using Stdin Input
   Pipe input text from stdin:

   gotok < input.txt

3. Specify Encoding and Model
   Specify a particular encoding and model:

   gotok --encoding "cl100k_base" --model "gpt-4" < input.txt

4. Quiet Mode
   Count tokens only (suppress all other output):

   gotok --quiet --input input.txt

5. List Available Models and Encodings

   gotok --list

• When both --input and stdin input are provided, the content from both sources will be concatenated before processing.
• Use the --passthrough option to print the original input text to stdout while viewing token counts.

This utility simplifies text preprocessing tasks for token-based models by giving you quick insight into input size, which helps in better managing prompt limits and structuring inputs for optimal model performance.