Blacksmith raises $66 million at $1 billion valuation

Blacksmith announced its Series C and says Sequoia Capital led the round.[1] Fortune reported that the financing raised $66 million.[2] Blacksmith says Premji Invest participated, along with existing investors Peak XV Partners, GV and Y Combinator.[1] The company says the financing values it at $1 billion and brings its total funding to $125 million.[1] For comparison, Blacksmith says its earlier Series B raised $45 million at a $550 million valuation, with Peak XV Partners leading.[3]

Blacksmith says it runs companies’ continuous-integration workloads, which build and test code before it is merged.[1] The company says its service runs those workloads faster than they could run elsewhere, without operational overhead.[1] It says it powers CI for Mercury, Granola, Handshake and LangChain, and that more than 10,000 companies trust it with critical workloads.[1] Customers can start with 3,000 free minutes per month, according to Blacksmith.[1] The company’s description makes CI capacity and usage a practical consideration for teams assessing the service.

Blacksmith says its weekly CI jobs increased from 5 million in January to more than 90 million, and that its annual recurring revenue has grown 17-fold.[1] The company says a customer’s demand can regularly jump from zero to tens of thousands of CPUs and then fall back.[1] Blacksmith also says Anthropic reported that its CI job volume grew 25-fold in six months as Claude took over most of its code output.[1] These figures are company-reported growth indicators; they do not, on their own, establish how the service would perform for a particular prospective customer.

Blacksmith says it manages just under 10 megawatts of computing capacity across data centers in the United States and Europe.[1] It says it is working to increase its computing footprint fivefold in 2027 and plans to use the Series C capital to expand both its team and computing footprint.[1] Fortune reported that the company had about 40 employees and planned to reach around 75 by year-end.[2] For buyers, the stated expansion plans offer context for the company’s intended response to growing workloads, but the evidence does not specify when new capacity will become available.