Anthropic SDK

npm install @anthropic-ai/sdk

go get github.com/anthropics/anthropic-sdk-go

import os
import anthropic

client = anthropic.Anthropic(
  api_key=os.getenv('PIPELLM_API_KEY'),
  base_url='https://api.pipellm.com'
)

message = client.messages.create(
  model='claude-sonnet-4-5-20250929',
  max_tokens=1024,
  messages=[
    {'role': 'user', 'content': 'Why is the sky blue?'}
  ]
)

print(message.content[0].text)

import Anthropic from '@anthropic-ai/sdk';

const client = new Anthropic({
  apiKey: process.env.PIPELLM_API_KEY,
  baseURL: 'https://api.pipellm.com'
});

const message = await client.messages.create({
  model: 'claude-sonnet-4-5-20250929',
  max_tokens: 1024,
  messages: [
    { role: 'user', content: 'Why is the sky blue?' }
  ]
});

console.log(message.content[0].text);

package main

import (
  "context"
  "os"
  "github.com/anthropics/anthropic-sdk-go"
  "github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
  client := anthropic.NewClient(
    option.WithAPIKey(os.Getenv("PIPELLM_API_KEY")),
    option.WithBaseURL("https://api.pipellm.com"),
  )

  message, _ := client.Messages.New(context.TODO(), anthropic.MessageNewParams{
    Model:     anthropic.F("claude-sonnet-4-5-20250929"),
    MaxTokens: anthropic.Int(1024),
    Messages: anthropic.F([]anthropic.MessageParam{
      anthropic.NewUserMessage(anthropic.NewTextBlock("Why is the sky blue?")),
    }),
  })
}