openai-gpt-token-counter

Count the number of OpenAI tokens in a string. Supports all OpenAI Text models including GPT-5, GPT-4, GPT-3.5-turbo, and specialized models

v1.1.2 URL: https://unpkg.com/openai-gpt-token-counter@1.1.2/src/index.js

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@tokenlens/models

Tree-shakeable static models.dev catalog split by provider for TokenLens.

v1.3.0 URL: https://unpkg.com/@tokenlens/models@1.3.0/dist/index.js

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ai llm models.dev model registry catalog vercel ai openai anthropic google mistral xai deepseek llama gemini

gpt-tokens

Calculate the token consumption and amount of openai gpt message

v1.3.14 URL: https://unpkg.com/gpt-tokens@1.3.14/dist/index.js

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gpt chatGPT openai tiktoken token tokens consumption amount

@langchain/core

Core LangChain.js abstractions and schemas

v1.1.0 URL: https://unpkg.com/@langchain/core@1.1.0/dist/index.cjs

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llm ai gpt3 chain prompt prompt engineering chatgpt machine learning ml openai embeddings vectorstores

@langchain/openai

OpenAI integrations for LangChain.js

v1.1.3 URL: https://unpkg.com/@langchain/openai@1.1.3/dist/index.cjs

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llm ai gpt3 chain prompt prompt engineering chatgpt machine learning ml openai embeddings vectorstores