Cosine AI
Last verified 2026-05-19. JSON
The funding figures on this page are attributed, not sourced: a publisher is on record but no document URL is. How we mark provenance.
| Total raised | $3.0Mattributed |
|---|---|
| Latest round | seed, $2.5M, 2024-08-01attributed |
| Founded | 2022 |
| Headquarters | London, UK |
| Industry | devtools |
| Stage | seed |
| Website | cosine.sh |
Cosine is an AI coding agent running across desktop, cloud, and terminal that handles complex engineering tasks while preserving code quality and visibility. It serves software engineers and teams needing autonomous coding assistance without losing control. The Lumen family of production-focused models is trained on COBOL, Fortran, and legacy systems mainstream coding models struggle with.
Funding rounds
| Date | Round | Amount | Lead |
|---|---|---|---|
| 2024-08-01 | seed | $2.5M | undisclosed |
Detected tech stack
Cloudflare, Vercel, Astro 6.3.5, Google Analytics, Google Tag Manager, DoubleClick Floodlight, WordPress, PHP, MySQL
Provenance
| Fact | Status | Basis |
|---|---|---|
| Seed, $2.5M | attributed | finsmes named as publisher. No document URL on file. |
| Total raised $3.0M | attributed | finsmes named as publisher. No document URL on file. |
| Company existence | sourced | Y Combinator named as publisher. Document, retrieved 2026-09-17. |
| Description | self-reported | cosine.sh, read 2026-05-19 |
Change history
| Date | Fact | Change | Basis |
|---|---|---|---|
| 2026-09-24Existence: self-reported → sourced, Y Combinator, document, retrieved 2026-09-17 | Existence | self-reported → sourced | Y Combinator, document, retrieved 2026-09-17 |
Records begin 2026-09-24. All changes