Google Gemini has a generous free tier. You could start by experimenting in AI Studio - https://aistudio.google.com/ https://aistudio.google.com/ - then have a

Google Gemini has a generous free tier. You could start by experimenting in AI Studio - https://aistudio.google.com/ https://aistudio.google.com/ - then have a go at coding agents using their Gemini CLI or Antigravity tools. For what you're describing the free tiers of the Claude and ChatGPT web apps would probably work fine too.