How it works
AI output % measures the proportion of code output (PR estimates) that is attributed to AI assistants. This metric uses Weave’s proprietary Output algorithm to quantify productivity rather than raw line counts. It answers the question: “What percentage of our engineering output is coming from AI?” Because Output measures the meaningful impact of code changes rather than raw line counts, this metric provides a more accurate picture of AI’s contribution to your team’s productivity.Calculation
The AI output % is calculated as the total output attributed to AI assistants, divided by the total output overall, expressed as a percentage. Formula: AI output % = AI output / Total output Where:- AI output = sum of PR estimates for contributions attributed to AI assistants
- Total output = sum of PR estimates for all merged, non-ignored PRs (both human and AI)
Technical details
Why use output instead of lines of code?
Why use output instead of lines of code?
Weave’s code output algorithm analyzes the actual meaning and impact of code changes, providing a consistent measure that’s comparable across individuals, teams, languages, and organizations. This makes AI output % a more meaningful measure of AI’s contribution to your team.
What counts as AI output?
What counts as AI output?
Output is attributed to AI if Weave detects an AI assistant, such as Cursor or
Claude Code, from connected AI tool data or from signals in git like co-author
trailers. The attribution is determined at the PR level based on which
contributors (human or AI) made changes to the pull request.
Why does a mostly-AI PR appear when I click human output?
Why does a mostly-AI PR appear when I click human output?
Output is split within each PR, not assigned to one side. A PR that is 90% AI contributes 90% of its output to AI output and 10% to human output.When you click a slice of an AI vs human chart, the drill-down lists every PR that contributed to that slice:
- AI output lists PRs with any output attributed to AI.
- Human output lists PRs with any output not attributed to AI.
How is AI output attributed?
How is AI output attributed?
Weave uses multiple strategies to attribute output between humans and AI tools, automatically selecting the most accurate method based on available data. See AI output attribution for a detailed explanation of how attribution works.