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

Blacksmith, a startup that helps companies test and validate AI-generated code, has raised $45 million in a Series B round led by Peak XV Partners, bringing its valuation to $550 million — nearly ten times the $60 million valuation it received less than a year ago. The company, founded in 2024, now serves over 5,000 customers, up from 700 in the same period, and its revenue has grown to tens of millions of dollars, according to co-founder and CEO Aditya Jayaprakash.

Why Blacksmith’s growth reflects a key shift in software development

As AI coding tools like Cursor, OpenAI’s Codex, and Anthropic’s Claude Code make it faster for developers to write code, the bottleneck has shifted to validating that code. “Validating code is still a bottleneck, and it’s an even bigger bottleneck because people are writing even more,” Jayaprakash said. Blacksmith started as a cloud provider for continuous integration (CI) workloads, helping companies run builds and tests before code reaches production. It has since expanded with Codesmith, an AI agent that can automatically fix failed code checks.

The company’s rapid growth is notable: it reached a $10 million annualized revenue run rate with just 10 employees, and now has about 30 employees and “tens of millions” in revenue. Some of its largest customers spend more than $1 million annually.

Competition and market positioning

Blacksmith operates in a crowded market, competing with established players like GitHub Actions, Cursor Automations, and validation capabilities built into Codex and Claude Code, as well as AI code-testing services from Amazon Web Services, Microsoft Azure, and Google Cloud. Jayaprakash says Blacksmith differentiates on speed and affordability. The company plans to expand into a broader suite of coding tools, aiming to help developers write, validate, and merge software faster.

What this means for the software industry

The surge in AI-generated code has created a new challenge: ensuring that code is reliable and secure before deployment. Blacksmith’s growth signals that the market for AI-powered testing and validation is expanding, as companies seek tools to keep pace with the speed of AI-assisted development. This trend is likely to intensify as AI coding tools become more widespread.

Conclusion

Blacksmith’s near-tenfold valuation increase in under a year highlights the growing importance of code validation in the AI era. With a strong customer base and a clear focus on speed and cost, the startup is well-positioned to capitalize on the shift toward faster, AI-driven software development, though it faces stiff competition from both startups and tech giants.

FAQs

Q1: What does Blacksmith do?
Blacksmith provides a cloud platform for continuous integration (CI) and AI-powered code testing, helping companies build, test, and verify software before it reaches production. It also offers Codesmith, an AI agent that automatically fixes failed code checks.

Q2: How much funding has Blacksmith raised?
Blacksmith has raised a total of $58.5 million, including a $10 million Series A and a $45 million Series B led by Peak XV Partners, with participation from GV and Y Combinator.

Q3: Who are Blacksmith’s main competitors?
Competitors include GitHub Actions, Cursor Automations, validation features in Codex and Claude Code, as well as AI code-testing services from AWS, Microsoft Azure, and Google Cloud.