Blacksmith announces $45M Series B led by Peak XV

Blacksmith has announced a $45M Series B led by Peak XV Partners, which was raised in March 2026 and disclosed on 2026-08-12.

• The round also included existing investors YC and GV, and valued Blacksmith at $550M.
• Blacksmith said it is using the capital to expand its compute footprint by an order of magnitude in the coming months; it currently manages hundreds of thousands of cores and says more than 6,000 companies run CI on its platform.
• The post also says Blacksmith recently launched [code]smith, its cloud coding agent, and is building [code]smith QA to autonomously test changes before merge.