$8/100k tokens strikes me as potentially a TON if the idea is that we're going to be running this as part of the iterative local development cycle (or god forbid letting agents run it whenever they decide). As you mentioned, one of the issues with AI generated code is often that it writes too much and needs direction on shrinking down.
I could easily see hitting 10k+ LOC on routine tickets if this is being run on each checkpoint. I have some tickets that require moving some files around, am I being charged on LOC for those files? Deleted files? Newly created test files that have 1k+ lines?
In your explanation here, you mention running it per PR - does this mean running it once? Several times?