VSCode, Claude Code in Terminal, OpenAI Codex in chat, this is my workflow. Checks and balances, also a very funny story.
I was working with both models designing my IT infrastructure agent team. I was ideating with Codex on using a mixed provider agent eco system, using both Anthropic and OpenAi models based solely on capability vs cost. Codex gladly designed the spec (and put it's models as the primary) fair and expected, when I had Claude code review the spec, Claude said "just drop the OpenAI fantasy" 🤣
I got a real good laugh out of that one lol