Sequoia Backs Blacksmith’s $66M Round at $1B Valuation

WHO:

TechCrunch - Blacksmith is a platform for companies to build and test AI code.

Techmeme - Blacksmith is an AI code-testing startup that runs infrastructure companies use to test code before it ships.

TechCrunch - Sequoia led Blacksmith’s Series C round.

Techmeme - Sequoia Capital led Blacksmith’s Series C round.

Techmeme - Beatrice Nolan of Fortune reported on Blacksmith’s funding and valuation.

WHAT:

TechCrunch - Blacksmith announced a $66 million Series C round at a $1 billion valuation.

Techmeme - Blacksmith raised a $66 million Series C at a $1 billion valuation.

Techmeme - The company’s valuation increased from $550 million to $1 billion.

Techmeme - Blacksmith previously raised a $45 million Series B.

HOW:

TechCrunch - Blacksmith’s platform helps companies build and test AI code more effectively.

Techmeme - Blacksmith operates infrastructure used by companies to test code before it ships.

(UPDATED October 21, 2026 19:22 UTC)

Blacksmith, a startup that provides infrastructure for testing code, has raised $66 million in a Series C funding round, bringing its valuation to $1 billion. Sequoia Capital led the round. Blacksmith’s platform is used by companies to test code before it ships, and the company says its tools help businesses build and test AI code more effectively. The new valuation marks a rise from $550 million, though no timing for that earlier valuation was provided. Blacksmith had previously raised $45 million in a Series B round. The latest investment gives the company additional funding as it develops its code-testing platform for organizations working with AI. The funding and valuation were reported by Beatrice Nolan of Fortune.