San Francisco startups compete in the most expensive ad auctions in the country, bidding against every other YC and Series A company for the same buyers. We build performance programs that win that auction efficiently and produce the kind of traction your next round actually needs to see.
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Startups · San Francisco, CA
In the Bay Area you are not just competing for customers, you are competing for ad inventory against hundreds of well-funded startups chasing the same SaaS, AI, and developer audiences. Every Series A company in the city is bidding on the same handful of high-intent keywords and the same LinkedIn job titles, which means San Francisco startups routinely pay some of the highest CACs in the country. On top of that, CCPA and CPRA have made tracking and attribution genuinely harder in California, so the dashboards that work elsewhere quietly under-report what is actually driving pipeline here. Burning runway on channels you cannot measure is a fast way to walk into a down round.
Cosmo runs your performance program like an operator who has done this in this market. We model CAC against your real payback period, not vanity ROAS, and concentrate spend where intent is highest instead of spreading it thin across crowded auctions. Strategy and execution sit under one roof, so our media buyers, creative team, and in-house developers ship same-day: a new landing page, a fixed conversion event, a first-party tracking setup that survives California's privacy rules. The result is a CAC story clean enough to put in front of a Sand Hill investor, not just a spend report.
Our Approach
Before a dollar goes live, we map the specific SF and Bay Area audiences you are competing for, where the well-funded incumbents are overpaying, and where high-intent demand is being left on the table. You get a media plan built around your payback period and runway, not a generic best-practices deck.
Our in-house dev team stands up first-party tracking, server-side events, and clean attribution that hold up under CCPA and CPRA, so you trust your numbers. When a landing page or conversion event needs to change, it ships the same day instead of sitting in a partner agency's queue for two weeks.
We optimize toward the metrics your board and investors care about: CAC, payback, and efficient growth. Every cycle we cut what is not converting, double down on what is, and package the results into a traction story that strengthens your next raise.
Proof
We launched Acre AI from zero to market, taking an AI startup from no traffic and no pipeline to a live, measurable acquisition engine that gave the founders real traction to point to.
Common Questions
What San Francisco Startups teams ask us most.
Because the Bay Area is the densest startup market in the world, you are bidding against hundreds of funded companies for the same SaaS, AI, and developer audiences on Google and LinkedIn. That competition drives San Francisco CACs well above the national average, which is why disciplined targeting and tight measurement matter more here than almost anywhere else.
We are headquartered in Austin and serve San Francisco startups remotely, the same way we serve clients nationally. Our team works in your time zone, knows the Bay Area's competitive and regulatory landscape, and operates as an embedded extension of your growth team rather than a distant vendor.
CCPA and CPRA make standard pixel-based tracking less reliable in California, so our in-house developers build first-party and server-side measurement that stays compliant while still giving you accurate, defensible numbers. That means you can trust your CAC and payback figures, even when off-the-shelf dashboards under-report.
Yes. Investors on Sand Hill Road want to see efficient, repeatable growth, not just spend. We optimize toward CAC, payback period, and pipeline quality, then package the results into a clean traction narrative your board and prospective investors can underwrite.
Strategy and execution live under one roof. Our media buyers, creatives, and developers ship same-day, so when a landing page or tracking event needs to change, it happens immediately instead of waiting in a queue. For an early-stage startup, that speed is the difference between learning fast and burning runway.
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Tell us where you want to be. We'll build the system to get you there.