LLM Token Counter & Cost Estimator

import { encoding_for_model } from "js-tiktoken";

const enc = encoding_for_model("gpt-4o");
const tokens = enc.encode("Hello world!");
console.log("Token count:", tokens.length);

import tiktoken

encoding = tiktoken.encoding_for_model("gpt-4o")
tokens = encoding.encode("Hello world!")
print(f"Tokens: {len(tokens)}")