Short verdict
Zoom Phone is stronger when phone is part of a broader collaboration stack with SMS, recording, fax, and admin support. Google Voice is better for simple Workspace phone needs.
Decision matrix
Implementation take
The winning choice depends less on the logo and more on where the AI receptionist will sit in the call flow. Native AI can be faster when the provider already owns the number and routing rules. External AI can be more flexible when the business needs custom scripts, multi-system handoff, or a separate voice-agent platform.