AI Code Testing Platform Blacksmith Raises $45 Mn In Series B Led By Peak XV
Blacksmith has raised $45 million in Series B funding at a valuation of $550 million. The AI code testing platform’s round was led by Peak XV Partners, with existing investors Google Ventures and Y Combinator also participating.
The round takes the startup’s total funding to $58.5 million. Blacksmith said the proceeds will be used to expand into a broader suite of coding tools and help developers write, validate and merge software faster.
From CI workflows to AI coding agents
Co-founded in 2024 by Aditya Jayaprakash, Aayush Shah and Aditya Maru, Blacksmith provides a cloud platform for running GitHub Actions continuous integration workflows. The startup claims its platform can run CI workflows up to twice as fast at half the cost.
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Blacksmith now serves more than 5,000 customers, including Mercury, Supabase, Clerk, Ashby and Expensify, up from more than 700 customers less than a year ago.
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The startup initially focused on CI workloads, helping companies run software builds and tests to validate code before it reaches production. It has since expanded into AI-powered coding tools with Codesmith, an AI coding agent that can automatically fix failed code checks.
Competitive landscape
Blacksmith competes with GitHub Actions, Cursor Automations and the coding and validation capabilities offered by Codex and Claude Code. It also faces competition from AI code testing tools offered by Amazon Web Services, Microsoft Azure and Google Cloud.
India’s AI-powered software testing segment is also seeing more activity as enterprises look for faster and automated ways to validate software and AI-generated code. LambdaTest, now TestMu AI, is among the prominent Indian players in the segment. It raised $38 million in a Series D round in 2024 to strengthen its AI capabilities and expand its testing platform.
A growing AI coding boom
Newer players such as BotGauge AI are building autonomous QA agents, while FinalRun is developing AI agents for mobile test automation across Android and iOS using natural-language instructions.
The broader AI coding boom is driving demand for testing and debugging tools. Bengaluru-based Emergent raised $130 million in July 2026 at a valuation of $1.5 billion, with its platform offering testing and debugging capabilities alongside AI-led application development. For Blacksmith, the fresh capital arrives at a time when enterprises are doubling down on AI-generated code, making validation tools a critical part of the software development stack.
Peak XV’s backing adds Blacksmith to a portfolio that has bet big on AI infrastructure and developer tools. The participation of Google Ventures and Y Combinator, which have backed the startup from its early days, signals continued conviction in the category as AI-generated code becomes a mainstream reality for engineering teams.
Sudip Kumar is a Writer at Bharat Fast, contributing to the platform for more than six months. With an interest in startups, entrepreneurship, digital media and graphics designing, he enjoys exploring emerging businesses and sharing informative stories with readers.
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