Blacksmith, a software development platform focused on continuous integration and code testing, reached a $1 billion valuation after Sequoia Capital led a $66 million Series C funding round announced Wednesday.
The platform helps companies automate the process of building, testing, merging and validating code changes. Co-founder and CEO Aditya Jayaprakash stated the company was founded to make continuous integration "less painful," adding that most organizations struggle with the volume of testing required, particularly as AI systems generate increasing amounts of code.
"As agents write more of the world's software, the question that matters is whether it can be trusted," Jayaprakash said in a blog post accompanying the funding announcement.
Blacksmith reported that its annual recurring revenue has grown 17x and the platform has processed over 90 million continuous integration jobs, which are individual automated code checks. Named customers include Mercury and Granola.
The company's valuation trajectory accelerated markedly in recent months. Two months before the Series C, Blacksmith raised $45 million in a Series B round that valued it at $550 million. A year prior, following a $10 million Series A, the company carried a $60 million valuation. Blacksmith has now raised $125 million across all funding rounds.
The timing reflects investor appetite for infrastructure tools that address AI-driven software development workflows. As generative AI systems increasingly contribute to code production, demand for testing and validation tools has grown. Blacksmith's framing of code trustworthiness as central to its value proposition aligns with broader industry conversations about the reliability and safety of AI-generated software.