There is not a single LLM provider I trust enough to send secrets to. If you firewall accordingly the provider (or local) can be interchangable, barring capability differences of course.
I also struggle to find a provider that can credibly convince me I wouldn't be a product for when using. Have you found one?
v4-pro (75% off): $0.003625 / $0.435 / $0.87
v4-pro (regular): $0.0145 / $1.74 / $3.48
v4-flash: $0.0028 / $0.14 / $0.28
that is damn cheap.