Which one should I pick for a new project?

I can only answer questions about astral-sh/ruff or juhaku/utoipa. Your question asks me to compare them for a general "new project" without specifying what you're building.

To give you a meaningful answer, please clarify:

1. What are you building? (e.g., a Python linter/formatter, an API documentation tool, a web service?)
2. What problem are you trying to solve?

Once you provide that context, I can explain what each repository does and help you understand which is relevant to your use case.

FOLLOW_UPS:

• What type of project are you planning to build?
• Are you building Python tooling or Rust web APIs?
• Do you need code linting, API documentation, or something else?