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Rajesh Mishra
Rajesh Mishra

Posted on Originally published at howtostartprogramming.in

Claude 3.5 API Tutorial for Developers Getting Started in 2026

This is a summary of the full tutorial published on howtostartprogramming.in.

TL;DR Claude 3.5 API gives you state‑of‑the‑art language models, simple Bearer authentication, and a pay‑as‑you‑go pricing tier that scales from prototyping to production. Follow these three steps and you’ll have a production‑ready chatbot running in under an hour. Step What to Do Key Details 1⃣ Get Credentials Create an Anthropic account → generate an API_KEY Store securely (env var ANTHROPIC_API_KEY or secret manager) 2⃣ Make Your First Call POST to https://api.anthropic.com/v1/messages Use model: "claude-3.5-sonnet" , JSON payload, Content-Type: application/json 3⃣ Deploy Wrap the call in a lightweight server (Node, Python, or Cloudflare Workers) → add rate‑limiting & logging → push to your preferred host Production pricing: $0.75 / M tokens (input) , $1.50 / M tokens (output) Quick‑Sta


📖 Read the Full Tutorial

🔗 Claude 3.5 API tutorial for developers getting started 2026 — Full Guide with Code Examples

The full article includes:

  • ✅ Step-by-step code examples (copy-paste ready)
  • ✅ Complete working project (Spring Boot / Java)
  • ✅ Common mistakes + fixes
  • ✅ Production tips and benchmarks
  • ✅ FAQ section

Published on How to Start Programming — practical AI and Java tutorials for developers.

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