I'm genuinely asking, when you say Gemini 3.1 DT is an equivalent model of GPT 5.4 Pro, is there a specific benchmark/comparison you're referring to or is this more anecdotal?

And do you mean to say that you don't really use GPT 5.4 Pro unless it's for a hard bug? Curious which models you use for system design/architecture/planning vs execution of a plan/design.

TIA! I'm still trying to figure out an optimal system for leveraging all of the LLMs available to us as I've just been throwing 100% of my work at Claude Code in recent months but would like to branch out.

Pro and DT model are equivalents because

- internally same architecture of best of N

- not available in the code harness like Codex, only in the UI (gpt has API)

- GPT-5.4 pro is extremely expensive: $30.00 input vs $180.00 output

- both DT and Pro are really good at solving math problems