Free News source for stock market

Hi all,

Grad student here. Working on a research project building an LLM-based trading agent, where financial news is one of several data sources I'm pulling together. Need historical news going back about 5+ years, free or cheap, with bulk/API download in chronological order.

Most options I've checked are either paywalled, only go back a few months, or rate-limit hard. What's everyone using these days?