OpenAI has moved the GPT‑5.6 Luna model to the free ChatGPT tier, removing chat‑turn limits, adding a Think button, and clarifying product layers such as Sol, Codex, Work and API, while outlining practical use‑cases, enterprise efficiency gains, and guidance for developers.
Claude Code offers a great AI coding experience but quickly becomes costly, so this guide shows how to route its requests through Google AI Studio’s free Gemini 2.5 Flash model via OpenRouter or an open‑source proxy, compares performance and pricing, and provides step‑by‑step configuration, advanced switching tips, and common pitfalls.
This guide explains Alibaba Cloud ESA's free CDN tier, covering its generous unlimited‑traffic offering, step‑by‑step application, region‑selection modes, domain integration, special port and cache configurations, renewal tricks, performance benchmarks, and comparisons with competing services.
This step‑by‑step guide shows how to register for Amazon AWS, launch a free‑tier EC2 instance with Linux, bind an Elastic IP, set up a MySQL RDS database, and deploy a WordPress site, providing a practical hands‑on learning path for Linux operations and cloud computing.
