llm sdk python javascript

If you’re looking for LLM SDKs in Python and JavaScript, here are the most common options:

Python

Popular SDKs/libraries:

• OpenAI Python SDK — for OpenAI models
  • pip install openai
• Anthropic SDK — for Claude
  • pip install anthropic
• Google Gemini SDK
  • pip install google-generativeai
• LangChain — orchestration framework for multiple LLMs
  • pip install langchain
• LlamaIndex — retrieval + LLM apps
  • pip install llama-index

Example (OpenAI, Python):

from openai import OpenAI

client = OpenAI(api_key="YOUR_API_KEY")

resp = client.responses.create(
    model="gpt-4.1-mini",
    input="Write a short poem about the sea."
)

print(resp.output_text)

JavaScript / TypeScript

Popular SDKs/libraries:

• OpenAI JS SDK
  • npm install openai
• Anthropic SDK
  • npm install @anthropic-ai/sdk
• Google Gemini SDK
  • npm install @google/generative-ai
• LangChain JS
  • npm install langchain
• LlamaIndex TS
  • npm install llamaindex

Example (OpenAI, JavaScript):

import OpenAI from "openai";

const client = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });

const resp = await client.responses.create({
  model: "gpt-4.1-mini",
  input: "Write a short poem about the sea."
});

console.log(resp.output_text);

If you mean “which is better?”

• Python: better for AI/ML workflows, data processing, backend pipelines
• JavaScript: better for web apps, frontends, Node.js backends

Common choices

• Direct API SDK: OpenAI / Anthropic / Gemini
• Multi-model abstraction: LangChain
• RAG/document apps: LlamaIndex

If you want, I can also give you:

1. a comparison table of Python vs JavaScript LLM SDKs, or
2. a minimal working example for OpenAI in both languages.