Blacksmith, the AI Code-Testing Innovator, Sees Valuation Skyrocket Nearly 10-Fold in Under a Year
With the acceleration of coding brought on by AI, the significant hurdle in software development now lies in testing and validating the code. Blacksmith has secured $45 million in funding to address this challenge.
The latest Series B funding round, led by Peak XV Partners, values Blacksmith at $550 million, a considerable increase from its previous valuation of $60 million following a $10 million Series A round raised less than a year ago. Returning investors GV and Y Combinator also joined this funding round, pushing the total funding for the startup to $58.5 million.
Established in 2024, Blacksmith assists organizations in constructing, testing, and verifying their software prior to its deployment. The company has expanded its client base to over 5,000, including notable names like Mercury, Supabase, Clerk, Ashby, and Expensify, a sharp rise from over 700 customers a year back, as shared by co-founder and CEO Aditya Jayaprakash in an exclusive chat.
The emergence of AI coding tools such as Cursor, OpenAI’s Codex, and Anthropic’s Claude Code has simplified code generation for software teams; however, the reliability of AI-generated code is not guaranteed.
“The challenge of validating code persists and is magnified by the increased volume of code being written,” Jayaprakash noted.
Initially, Blacksmith operated as a cloud service focused on continuous integration (CI) efforts, assisting companies with software builds and test validations before they were launched. The platform has since evolved to include Codesmith, an AI-driven coding agent capable of automatically rectifying code errors.
According to Jayaprakash, Blacksmith achieved a $10 million annual revenue run rate with only 10 employees and has since expanded to around 30 staff and increased its revenue to “tens of millions of dollars.” While he refrained from disclosing an exact updated figure, he mentioned that some major clients are now investing over $1 million annually in the platform.
Despite this promising progress, Blacksmith faces tough competition within a crowded market. Competitors include GitHub Actions, Cursor Automations, integrated validation features within Codex and Claude Code, as well as AI code-testing tools provided by Amazon Web Services, Microsoft Azure, and Google Cloud.
Jayaprakash emphasized that Blacksmith aims to differentiate itself by providing rapid code testing solutions at competitive prices.
Looking ahead, Jayaprakash revealed plans for Blacksmith to broaden its range of coding tools with the goal of enabling developers to write, validate, and merge software more efficiently.
