Google Gemini Batch Mode API with a 50% cost reduction: a game changer?

I noticed on X this morning that Google dropped a new batch API with a 50% price cut. I use gemini-2.5-flash for speed and low cost and being able to batch large numbers of requests in a JSONL file (JSON where each line is a single legal JSON expression) seems like a big deal to me. Gemini Batch API Docs I have been a little negative on Hacker News and X recently about the energy costs vs. value…