Weave

founder @ weave (yc w25) | Ending tokenmaxxing psychosis

Weave is an engineering intelligence platform aimed at CTOs and engineering leaders trying to figure out where their AI coding budget is actually going. The company plugs into Git and coding tools like Claude Code, Cursor, and Codex, then uses its own models to measure how engineers use AI on every pull request, benchmark that against other teams, and route each prompt to the most cost effective model for the job. The launch marks a $13.5M Series A led by Standard Capital , coming just months after a $4.2M seed earlier this year. The pitch lands at a moment when frontier model spend has become a real line item and most companies have little visibility into what they are paying per engineering hour. Weave claims that most prompts do not need a frontier model, and its router is designed to exploit that by picking a cheaper option when it will not hurt output quality. The open source router sits at localhost:8080 in front of tools like Claude Code, Codex, and Cursor, and advertises 40 to 70 percent cost reductions from a single endpoint change. Customers referenced in the launch include Robinhood, PostHog, and Telnyx. Weave was founded in 2024 by Andrew Churchill and Adam Cohen and is part of Y Combinator's W25 batch, with a team of 14 based in San Francisco. Cohen, who fronts the launch video, describes the company's mission on his profile as ending "tokenmaxxing psychosis," a nod to the broader argument here that spending on tokens should be measured with the same rigor as spending on people.

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