Blacksmith Raises $66M Series C at $1B Valuation Led by Sequoia

CI acceleration startup Blacksmith, incubated by Y Combinator, raised a $66M Series C led by Sequoia at a $1B valuation, bringing total funding to $125M, as surging AI coding agents drive demand for testing infrastructure.

2026-10-21 ~ 2026-10-21 · 4 related posts

• AI code-testing startup Blacksmith hits $1B valuation as AI-written code surges — jeremyakahn · 2026-10-21
• Blacksmith raises Series C led by Sequoia at $1B valuation as weekly CI jobs surge from 5.4M to 90M — ycombinator · 2026-10-21
• Blacksmith raises $66M Series C at $1B valuation as AI agents explode CI demand — garrytan · 2026-10-21

1 near-duplicate retellings: ycombinator