Blacksmith Hits $1B as Weekly CI Jobs Jump From 5M to 90M

Blacksmith, which runs continuous integration (CI) jobs for software teams, raised a Series C led by Sequoia Capital at a $1 billion valuation, according to CEO Aditya Jayaprakash’s announcement post on October 21. Weekly CI jobs on the platform grew from 5 million in January to more than 90 million, and ARR is up 17x, the company says. TechCrunch puts the round at $66 million.

The numbers

• $1 billion valuation; Sequoia leads, with Premji Invest joining and existing investors Peak XV Partners, GV and Y Combinator participating.
• $125 million raised to date, per the company.
• $66 million Series C, per TechCrunch. The company’s post does not state the round size.
• 5 million to 90 million+ CI jobs per week since January; ARR up 17x (no dollar figure disclosed).
• Just under 10 MW of compute across U.S. and European data centers today, with a plan to grow that footprint 5x in 2027.
• 10,000+ companies use it, including Mercury, Granola, Handshake and LangChain.

Fast step-up

TechCrunch reports the Series C lands two months after a $45 million Series B at a $550 million valuation (the company announced that Peak XV-led round on August 12), and a year after a $10 million Series A at $60 million. That is roughly a 17x valuation increase in twelve months, matching the ARR multiple the company cites.

Why CI is now a compute story

Jayaprakash’s argument is that code generation stopped being the bottleneck and verification took its place: every agent-written change still has to be built and tested before merge. He points to Anthropic’s report that its CI job volume grew 25x in six months as Claude took over most of its code output. CI demand is spiky, swinging from zero to tens of thousands of CPUs for a single customer, which is the workload Blacksmith says it built its infrastructure to absorb. The new money goes to hiring and to growing that compute footprint.

What we are watching

Whether the 5x megawatt target for 2027 holds as more coding agents push CI volume, whether Blacksmith discloses an ARR dollar figure, and how GitHub responds after Blacksmith’s December 2025 post that the GitHub Actions control plane “is no longer free.”