Cool experiment. I've been mostly using Claude with the various Chat apps - currently with LibreChat - and it does a pretty good job!
Although Gemini and Claude are doing very well in coding but I think chatgpt is much better in data analysis tasks
I didn't test with ChatGPT yet so this is a fair comment. I'm not sure how good their MCP offering is at this time? It was quite easy to connect MCP and ClickHouse for Claude Desktop, Claude Code and Gemini CLI.