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Cosine

Your AI Co-developer

Cosine understands your codebase better than you do. It supports 50+ coding languages, allowing developers to ask any question about their codebase, get explanations about any feature and get suggestions about how to write new code.

Cosine
Founded:2022
Team Size:6
Location:San Francisco
Group Partner:Michael Seibel

Active Founders

Alistair Pullen

Full-stack Software Engineer with 15 years experience with deep applied knowledge of LLMs and Embeddings. Currently building an AI dev tool. Experienced an exit with Fancy (YC S20, acq. GoPuff).

Alistair Pullen
Alistair Pullen
Cosine

Yang Li

1 IPO, 2 Acquisitions, 3 Unicorns. Ex VP of Europe for Digital Currency Group's consumer arm, Luno. Launched Ziglu (acquired by Robinhood) and scaled to 100,000 customers in the first year. Previously Commercial Director for Mobike (acquired by Meituan) growing it to 220M MAUs until the $55B IPO. Yang is one of the 2021 Forbes 30 under 30 cohort.

Yang Li
Yang Li
Cosine

Sam Stenner

CTO at Buildt, using generative AI to make app development faster. Mobile engineer at Fancy (YC 20). Youngest person to publish a game on Steam.

Sam Stenner
Sam Stenner
Cosine

Company Launches

All other products in our space are using base LLMs that are prompted, not trained, and tacking on rudimentary additional tools. This results in being limited to the baseline intelligence of the foundational models and incompetent outside of a narrow band of tasks.

SWE-Bench score coming soon

YC W23 Demo Day Video