Cosine

About

Cosine is a fully agentic SWE that allows you to instantly work on every single ticket at once, asynchronously.

Founders

• 
  Alistair Pullen· Founder

  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).

  LinkedIn ↗Twitter ↗
• 
  Yang Li· Founder

  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.

  LinkedIn ↗Twitter ↗

Product launches · 1 launch

• Cosine 3.0 - one coding agent across every surface your team uses ↗▲ 5Apr 16, 2026

  (use your existing Claude, OpenAI, Copilot subscription)

Change history · none recorded