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Weave raises $13.5M to measure AI coding productivity
The YC-backed startup tracks developer output, both human and AI, to give leaders a single score. Already used by 500 companies including Robinhood.
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A startup that tracks whether AI coding tools actually make engineers more productive has raised $13.5 million in Series A funding.
San Francisco-based Weave builds software that measures the work of human developers and AI agents, then rolls it into a single output score. The goal is to give business leaders a clear view of the return on AI spending.
"Sales gets judged on one hard number, revenue, while engineering, the most analytical discipline in the company, gets evaluated on vibes," Adam Cohen, Weave's cofounder and CEO, told Business Insider. "We wanted to bring that same quantitative rigor to engineering."
Legacy metrics like lines of code were designed for human output, not for AI. Cohen said that approach rewards volume over value and encourages what the industry calls tokenmaxxing – treating heavy AI usage as evidence of productivity rather than measuring actual output. Earlier this year, many companies ran gamified leaderboards to push AI adoption before pulling back and demanding clear returns on investment.