Blacksmith

Blacksmith is a DevOps startup based in San Francisco, United States that has raised $55M in venture capital across 2 funding rounds since 2024. The company reached Series B stage in March 2026 with a $45M round led by Peak XV Partners at a $550M valuation. Blacksmith's investor base includes 3 institutional funds, with Peak XV Partners leading the most recent equity round.

Blacksmith is an AI code-testing and CI/CD cloud platform that helps software teams build, test, and verify code before it reaches production. The platform runs GitHub Actions pipelines in ephemeral Firecracker microVMs across Linux x64, ARM64, and Apple Silicon M4 hardware, delivering faster builds at lower cost. Blacksmith now serves more than 5,000 customers — including Mercury, Supabase, Clerk, Ashby, and Expensify — up from 700 customers less than a year earlier, with CI job volume growing 5–10% week over week since the start of 2026. Founded in 2024, the company raised a $45 million Series B led by Peak XV Partners in March 2026, announced in August 2026, which valued Blacksmith at $550 million — nearly a 10x increase from its $60 million valuation at the Series A just a year prior.