Seattle-based Gradial, which makes AI agents that automate enterprise marketing workflows, raised a $65M Series C led by Insight Partners at a $675M valuation (Kerry Flynn/Axios)

Kerry Flynn / Axios: Seattle-based Gradial, which makes AI agents that automate enterprise marketing workflows, raised a $65M Series C led by Insight Partners at a $675M valuation — Gradial, a Seattle-based startup that deploys AI agents to automate enterprise marketing workflows, has raised $65…