How Cosine scaled from market testing to $4M+ in pipeline in months

Cosine had a world-class product and serious backing (YC, advised by Sam Altman), but needed to figure out where outbound could have the biggest impact. Multiple potential markets, multiple buyer personas, and no clear signal yet on which combinations would convert best.

They weren't starting from zero, but they needed a structured way to test markets and messaging at speed, learn from the data, and scale what worked. At the same time, their sales function needed support on the GTM side, not just meetings in the calendar but strategic input on targeting and positioning.

Immediate Impact From Day One

We launched outreach and booked 4 qualified sales calls on the very first day. That early traction gave Cosine immediate signal on market interest and validated the outbound channel from the start.

Multi-Market Testing

We ran campaigns across multiple different markets and buyer segments simultaneously. Each campaign was a test: different verticals, different personas, different angles. We tracked what converted and fed those learnings directly back into the strategy, helping Cosine understand where the strongest product-market fit signals were coming from.

Paid Ads Approach to Outbound

Every campaign was treated like a paid ad. We A/B tested messaging, targeting, and sequencing across all active markets. Underperforming campaigns were cut. Winning campaigns got more volume. This continuous iteration is what turned early testing into predictable, repeatable pipeline.

Scaling What Worked

Once we identified the markets and messaging that converted, we expanded volume 3x. The same discipline applied at scale: double down on winners, cut losers, and keep iterating. Cosine went from early market testing to 60+ consistent sales calls per month.

Supporting Sales Leadership and GTM

We didn't just deliver meetings. Our account management team worked alongside Cosine's sales leadership, providing strategic input on GTM, sharing data from campaigns on what was resonating, and helping shape the outbound strategy as the company's understanding of its market evolved.

Cosine booked 4 qualified sales calls on day one of outreach, proving the channel immediately.

Monthly output scaled to 60+ sales calls per month, delivered consistently month after month. No spikes and dips. Predictable pipeline that their sales team could plan around.

Over 300 sales calls were booked across the engagement, generating $4M+ in pipeline. The multi-market testing approach gave Cosine clear data on where product-market fit was strongest, informing not just outbound but their broader GTM strategy.

Volume expanded 3x over the course of the partnership as winning campaigns were identified and scaled. The paid ads methodology meant every increase in volume came with an increase in efficiency, not a drop in quality.