Choosing an AI client is now a workflow decision, not a model beauty contest. With Ad Platform MCP, Claude and ChatGPT call the same tools — differences are setup friction, UI, and org licensing.
Claude Desktop Strengths
ChatGPT Strengths
Shared MCP360 Layer
Both clients:
Switching clients does not require reconnecting OAuth vendor accounts.
Recommendation by Team Shape
| Team | Suggested starting client |
|------|---------------------------|
| Technical agency | Claude Desktop |
| Marketing-led brand | ChatGPT |
| Mixed | Pilot both on read-only keys |
Evaluation Prompt
Run this on both clients after setup:
> "Top 5 campaigns by ROAS last 14 days with spend and frequency"
Compare accuracy, latency, and formatting — not just prose quality.