AI code-testing startup Blacksmith’s valuation jumps almost 10x in less than a year

Blacksmith, an AI code-testing startup, has seen its valuation skyrocket nearly tenfold in under a year, reaching $550 million. This surge comes after it raised $45 million in a recent Series B round, led by Peak XV Partners, up from a $60 million valuation a year ago during its $10 million Series A. The investors GV and Y Combinator also joined in, bringing the company's total funding to $58.5 million.

Established in 2024, Blacksmith assists businesses in building, testing, and verifying their software prior to production. Today, the company caters to over 5,000 customers, a significant jump from the 700 customers it had a year prior. Co-founder and CEO Aditya Jayaprakash highlighted the rapid growth during an exclusive interview.

The emergence of AI coding tools like Cursor, OpenAI's Codex, and Anthropic's Claude Code has expedited coding, yet the quality of AI-generated code remains uncertain. Jayaprakash explained that testing code still poses a considerable hurdle, exacerbated by the increasing volume of code being written. Initially functioning as a cloud provider for continuous integration (CI) workloads, Blacksmith later introduced Codesmith, an AI coding agent capable of automatically rectifying failed code checks.

The company's annualized revenue reached $10 million with just 10 employees, and it has since expanded its workforce to approximately 30 and revenue to tens of millions of dollars. Despite facing competition from GitHub Actions, Cursor Automations, AI code-testing services from AWS, Microsoft Azure, and Google Cloud, Blacksmith differentiates itself through faster code testing and more affordable pricing.

Looking ahead, Blacksmith intends to expand its offerings to include a broader range of coding tools, aiming to facilitate developers in writing, validating, and merging software more swiftly.