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Blacksmith hits $1 billion valuation after $66 million Series C led by Sequoia. The code-testing startup nearly doubled its valuation in about two months as AI-generated code floods developer pipelines 15 hours ago Sponsored: Vera - AI-powered prediction market intelligence, built for serious analysts Explore Vera Blacksmith, a startup that runs the machinery companies use to test their code before release, is now worth $1 billion. The new mark comes from a $66 million Series C round led by Sequoia Capital. According to Fortune, the round lands about two months after Blacksmith raised a $45 million Series B at a $550 million valuation. The round, by the numbers. The Series C pushes Blacksmith's total funding to about $124.5 million, according to Fortune. Separate research findings put the exact Series C amount at approximately $66.26 million. Sequoia led this round. The earlier Series B was led by Peak XV Partners, with GV (formerly Google Ventures) and Y Combinator also participating. Before the Series C, the company had raised a total of approximately $58.5 million. The valuation trajectory is steep. Blacksmith sat at roughly $60 million after its Series A, then jumped to $550 million with the Series B. The latest round nearly doubles that figure. The underlying business metrics help explain the enthusiasm. Revenue has climbed from the early single-digit millions to the tens of millions, per the research findings. Some enterprise customers now spend more than $1 million a year with the company. The customer base has grown from approximately 700 to 800 in late 2025 to somewhere between 5,000 and 6,000 or more. Named customers include Supabase and Expensify. Headcount, meanwhile, went from about 10 employees to about 30. AI, tech, and the markets they move - in one daily briefing. Daily. Free. Join 34,000+ readers across crypto, finance, and policy. What Blacksmith actually does. Every time a developer submits a change, automated tests run to make sure nothing breaks. Those tests need computing power to run on, and the machines that execute them are called runners. Blacksmith sells high-performance cloud runners plus caching tools designed specifically for these CI workloads. The company positions itself as a quicker, cheaper alternative to running those jobs on GitHub Actions, the default automation tool for many developers using GitHub. Blacksmith was founded in 2024 in San Francisco by Aditya (JP) Jayaprakash, who serves as CEO, along with Aayush Shah and Aditya Maru. The trio came through Y Combinator's Winter 2024 batch. They started with bare-metal CI runners for GitHub Actions, meaning dedicated physical servers rather than shared virtual machines. The company has since expanded into AI-assisted tooling. Its Codesmith coding agent automatically diagnoses failed code checks and attempts to fix them. The AI coding boom is a testing boom. According to the research findings, CI job volume on Blacksmith has grown by 5% to 10% every week since early 2026, tracking the rise in AI coding adoption. What this means for developers, investors, and rivals. Competition is another factor to watch. Blacksmith's pitch is built around being faster and cheaper than GitHub Actions' own runners. That makes its fortunes partly tied to how a much larger platform chooses to price and improve its own offering. The Codesmith agent suggests the company sees that risk and wants to move up the value chain. Selling raw compute for tests is useful. Selling software that understands why tests fail and fixes them is stickier, and potentially harder for a platform owner to replicate quickly. Disclosure: This article was edited by Diego Almada Lopez. For more information on how Cryptobriefing create and review content, see its Editorial Policy.

Blacksmith hits $1 billion valuation after $66 million Series C led by Sequoia. News Wed, 21 Oct 2026 11:12:58 UTC 14 hours ago Blacksmith's rapid growth and AI integration highlight a shift towards more efficient, automated code testing, impacting developer workflows and market competition. This content is automatically aggregated. Full credit goes to the original publisher (cryptobriefing.com).

Blacksmith Series B raises $45 mn led by Peak XV at $550 mn valuation. By Tanu August 17, 2026 4 Mins Read Blacksmith Series B has raised $45 million in fresh funding led by Peak XV Partners, valuing the San Francisco-based AI developer infrastructure startup at around $550 million. Existing backers Google Ventures (GV) and Y Combinator also participated in the round. The financing was completed in March 2026 but has been disclosed only now. With the latest investment, Blacksmith's total funding has reached approximately $58.5 million. The company plans to use a substantial share of the new capital to expand its computing capacity as demand rises for infrastructure that can test, validate and ship software generated with the help of artificial intelligence. Blacksmith targets rising AI code testing demand. Blacksmith operates in the continuous integration (CI) segment, helping engineering teams automatically build and test software before it moves further through the development process. The company was founded in 2024 by Aditya Jayaprakash, Aditya Maru and Aayush Shah. Its business has increasingly shifted toward supporting development workflows in which AI systems themselves generate and modify code. As AI coding tools become more capable, developers can produce software changes at a much faster pace. That increases the amount of code that needs to be tested and reviewed before deployment, creating additional pressure on existing CI infrastructure. Blacksmith said the number of CI jobs processed through its platform has been increasing by roughly 5% to 10% week-on-week since the beginning of 2026. The startup now serves more than 6,000 companies, with customers including Supabase, Clerk, Ashby and Mercury. Fresh capital to expand computing infrastructure. A major priority for the Blacksmith Series B proceeds will be increasing the company's computing footprint. Blacksmith currently manages hundreds of thousands of CPU cores and intends to expand that capacity by roughly 10 times in the coming months. The investment comes as the company prepares for a much larger volume of software testing workloads generated by AI-assisted development. Blacksmith argues that conventional CI infrastructure could face capacity and performance constraints as AI coding agents generate more pull requests and software changes. The company is therefore building infrastructure specifically designed around the speed and scale required by modern software development teams. Startup expands beyond traditional CI workflows. Blacksmith has also broadened its product offering beyond automated testing. Its recently introduced Code Smith is a cloud-based coding agent designed to work on software development tasks, including building features, fixing bugs and investigating CI failures. The company is also developing CodeSmith Quality Assurance, which is intended to automatically test code changes before they are merged. The broader strategy is to make the development cycle more automated, allowing both human developers and AI agents to move from writing code to validation and deployment more quickly. Blacksmith has positioned its infrastructure against established developer platforms such as GitHub Actions, CircleCI, Buildkite, Depot and Namespace. The startup claims its purpose-built CI cloud can execute workloads up to twice as quickly and reduce costs by 50% to 75% compared with GitHub-hosted runners. Blacksmith's own engineering updates also highlight the growing pressure AI-generated code is placing on continuous integration systems. Blacksmith's engineering blog Peak XV deepens US AI investment push. The Blacksmith Series B investment also highlights Peak XV Partners' expanding focus on US-based technology startups. The venture capital firm has been building its presence in the US since becoming an independent firm following the 2023 separation from Sequoia Capital. Its US portfolio includes AI and developer-focused companies such as Vapi, Mem0, Hyperbound and PostHog. Peak XV's official portfolio also lists Blacksmith among its investments, reflecting the firm's broader interest in developer infrastructure and AI-focused businesses. In February 2026, Peak XV announced $1.3 billion in new capital commitments across its India Seed, India Venture and APAC funds, underlining its continued investment activity across technology markets. The Blacksmith investment comes as AI increasingly changes the economics and workflow of software development. For the startup, the next phase will centre on scaling its infrastructure while expanding tools that allow AI-generated code to be tested and merged with less manual intervention. For more business and startup funding updates, readers can also explore [Lenskart Q1 FY27 results](https://businessmatters.in/lenskart-q1-fy27-results/) and [IndiQube Q1 FY27 results](https://businessmatters.in/indiqube-q1-fy27-results/).