Here's a quick video on how I'm using gpt-5.5 + Opus 4.7 + Codex browser testing tool - all at the same time to ship a new feature (oh yeah, plus Claude design). For new features with a lot of UI, I have to work locally still so Devin isn't the perfect workflow for that. I'm doing all this and then shipping it up to Devin for a review in the cloud in our real dev env. Thx @danshipper for the tip about writing the PRD with Opus 4.7 and then handing off to gpt-5.5