AI code-testing startup Blacksmith raised a $66M Series C led by Sequoia Capital at a $1B valuation, up from $550M after raising a $45M Series B in August (Beatrice Nolan/Fortune)

Beatrice Nolan / Fortune: AI code-testing startup Blacksmith raised a $66M Series C led by Sequoia Capital at a $1B valuation, up from $550M after raising a $45M Series B in August  —  Blacksmith, a startup that runs the infrastructure companies use to test code before it ships, has been valued at $1 billion following …