blackocloud is an AI workspace built around changing models while keeping the conversation, files and project context together. It is for people who draft with one model and want another model to review the work without rebuilding the context by hand. It is in early access and is not open publicly yet. The linked page is the waitlist for gradual access.
A second opinion often means copying the question and answer into another chat, restating the constraints and uploading the files again. That handoff can leave the next model with less context than the first. blackocloud is being built to keep that work together when you change models.