Replit

When you are building an LLM-powered application, your development environment is not just where you write code. It is where you run the model, iterate on prompts, manage API keys, handle dependencies, and eventually deploy. The choice between Replit and GitHub Codespaces is not just about which cloud IDE is nicer to use. It determines your entire development loop for building AI applications. Both platforms have invested heavily in AI features over the past two years, but they have taken very different approaches. Replit is betting on AI as the primary way you interact with your environment. Codespaces is betting on familiar tooling with AI as a powerful layer on top. Here is what each approach looks like in practice. ...

Disclosure: I earn a commission from Cursor when you sign up via my link. I also have an affiliate relationship with Replit. All opinions are based on hands-on use. The AI coding assistant space looked very different eighteen months ago. GitHub Copilot was the obvious default. Today there are four or five serious tools competing for the same keyboard real estate, and the performance gap between them is measurable in hours of developer time per week. Choosing the wrong one costs you more than the subscription fee. ...