Blacksmith Raises $45M Series B at $550M Valuation

Blacksmith, based in San Francisco, is a software startup providing a cloud-based platform for code validation and CI (continuous integration) workflows. The company has raised $45 million in Series B funding to scale its operations amid surging demand for faster software testing and validation tools.

Investors

This round was led by Peak XV Partners, with participation from existing investors Y Combinator and GV.

Blacksmith Use of Funds

Blacksmith plans to allocate the majority of the new capital toward expanding its compute infrastructure. The company intends to grow its managed footprint of hundreds of thousands of cores by an order of magnitude in the coming months to keep pace with customer demand.

About Blacksmith

Founded by Aditya JP Jayaprakash, Aayush Shah, and Aditya Maru, Blacksmith builds infrastructure and software for validating code. Its primary product is a purpose-built CI cloud that runs GitHub Actions workloads on dedicated compute with optimized caching and storage. The company also develops codesmith, a cloud-based coding agent designed to diagnose CI failures, autofix issues, and autonomously test changes before they are merged.

Funding Details

Company Website: https://blacksmith.sh

Company: Blacksmith
Raised: $45M
Round: Series B
Funding Date: August 12, 2026
Lead Investor: Peak XV Partners
Additional Investors: Y Combinator, GV
Company Website: https://www.blacksmith.sh
Software Category: DevOps
Source: https://www.morningstar.com/news/pr-newswire/20260812sf24354/blacksmith-raises-45m-series-b-from-peak-xv-partners-as-ai-generated-code-drives-demand-for-faster-code-validation