A short decision tool calibrated to your business needs. Answer 6 questions; get back a specific recommendation with reasoning. Most teams should use both for different jobs — this tool tells you which one for which job, based on your situation.
What's the primary use case you're thinking about?
How many people will use the tool?
Do you need a shared knowledge base (your docs, ICP, brand voice loaded once for the team)?
Do you need access to a marketplace of pre-built specialized tools (GPTs)?
Is sustained output quality more important than ecosystem breadth?
Do you have specific compliance requirements (HIPAA, FedRAMP, EU data residency)?