Claude Sonnet Free API — Sonnet 4.6 with Starter pack

Free Access to Claude Sonnet 4.6

Claude Sonnet 4.6 is available for free through ClaudeStore's Starter pack. Sonnet is the most popular Claude model — it delivers near-Opus quality at a fraction of the cost, with faster response times. It's the recommended model for most developers.

Why Sonnet 4.6 Is the Best Value

Quick Start

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

const client = new Anthropic({
  apiKey: "YOUR_FREE_KEY",
  baseURL: "https://api2.claudestore.store",
});

const message = await client.messages.create({
  model: "claude-sonnet-4.6",
  max_tokens: 1024,
  messages: [
    { role: "user", content: "Refactor this React component to use hooks." }
  ],
});

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

# In Cursor Settings → Models:
# Provider: OpenAI Compatible
# Base URL: https://api2.claudestore.store/v1
# API Key: YOUR_FREE_KEY
# Model: claude-sonnet-4.6

Best Use Cases for Sonnet 4.6

• Daily coding assistance — code completion, debugging, refactoring
• Content writing — blog posts, documentation, emails
• Data analysis — parsing, summarization, pattern recognition
• Claude Code CLI — the default model for interactive coding sessions
• Cursor/VS Code — fast enough for inline completions

FAQ