I am doubtful as well.
I could imagine 30 percent among certain engineers for certain tasks, especially if you use a popular language with popular libraries and frameworks that are well-represented in the training dataset. I don’t know how typical of a codebase Salesforce has. They could also finetune a model on their own codebase or devote a small team of engineers to figuring out which prompts, models, etc. work best for their codebase and process. In theory, those advantages could boost it beyond what testing would typically show.
But a consistent increase of “more than” 30 percent across the whole engineering workforce seems less plausible, especially lacking details on how they measured that and uptake numbers. Edited to add: Are they even confident that their engineers are using it consistently? At this scale, that’s not a given.
I’d be interested to know whether Salesforce customers have noticed a change in the number or scope of features being announced. A change of this size seems like it should be noticeable from the outside. I’d like to hear from the engineers in particular.