What's your AI development stack in 2026?

I've been experimenting with different workflows lately, and my current stack looks something like this:

• ChatGPT, brainstorming and research
• Claude Code, implementation
• Codex, code generation and debugging
• Cursor, editing and iteration
• Myspec turning rough ideas into structured specs before coding
I'm curious what everyone else is using.
If you had to pick only five tools, what would they be?