Most prompt engineering advice assumes you've already picked a model.
Every quarter, someone on the team asks: "Do we really need this Spark cluster?" For most of the jobs running on it, the answer in 2026 is no.
Someone analyzed 3,007 Claude Code sessions and found a ratio that broke my brain: for every fresh token sent to the API, 525 tokens were served from cache.
Everyone picks their vector database based on latency benchmarks and API ergonomics.