llm-info

Information on LLM models, context window token limit, output token limit, pricing and more, developed by 16x Prompt team.

Information provided includes:

• context window token limit
• output token limit
• pricing
• tokenizerId for loading tokenizer from @xenova/transformers
• and more

Models included:

• GPT-4
• GPT-4 Turbo
• GPT-4o
• GPT-4o mini
• GPT-4o Long Output
• o1
• Claude 3.5 Sonnet
• ... and more new models

Non-models (model-like) included:

• ChatGPT

Install:

$ yarn add llm-info

Usage

// Models
import { AllModels, ModelEnum, NonModelEnum, ModelInfoMap } from 'llm-info';

console.log(AllModels);
/*
[
  'gpt-4',
  'gpt-4o',
  'gpt-4-turbo',
  'gpt-4o-64k-output-alpha',
  'gpt-4o-mini',
  'claude-3-5-sonnet-20240620'
]
*/

console.log(AllModelLikes);
/*
[
  'gpt-4',
  'gpt-4o',
  'gpt-4-turbo',
  'gpt-4o-64k-output-alpha',
  'gpt-4o-mini',
  'claude-3-5-sonnet-20240620',
  'chatgpt'
]
*/

// Model Info
const modelInfo = ModelInfoMap['gpt-4o'];
console.log(modelInfo);
/*
{
  name: 'GPT-4o',
  provider: 'openai',
  contextWindowTokenLimit: 128000,
  outputTokenLimit: 4096,
  pricePerMillionInputTokens: 5,
  pricePerMillionOutputTokens: 15,
  tokenizerId: 'Xenova/gpt-4o'
}
*/

// Tokenizer
import { AutoTokenizer } from '@xenova/transformers';
const testSentence =
  "Many words map to one token, but some don't: indivisible.";
const results: string[] = [];
for (let i = 0; i < AllModels.length; i++) {
  const model = AllModels[i];
  if (ModelInfoMap[model].tokenizerId) {
    const tokenizer = await AutoTokenizer.from_pretrained(
      ModelInfoMap[model].tokenizerId
    );
    const tokens = tokenizer.encode(testSentence);
    results.push(`${model}: ${tokens.length}`);
  }
}
console.log(`Test sentence: ${testSentence}\n${results.join('\n')}`);
// Test sentence: Many words map to one token, but some don't: indivisible.
// gpt-4: 15
// gpt-4o: 14
// gpt-4o-mini: 14
// claude-3-5-sonnet-20240620: 16

Testing

$ yarn test