I haven’t ran any experiments about token usage with tasks, but if you ran them all together without tasks, then each files full operation _should_ be contributing as cached tokens for each subsequent request. But if you use a task then only the summary returned from that task would contribute to the cached tokens. From my understanding it actually might save you usage rates (depending on what else it’s doing within the task itself).
I usually use Tasks for running tests, code generation, summarizing code flows, and performing web searches on docs and summarizing the necessary parts I need for later operations.
Running them in parallel is nice if you want to document code flows and have each task focus on a higher level grouping, that way each task is hyper focused on its own domain and they all run together so you don’t have to wait as long, for example:
- “Feature A’s configuration” - “Feature A’s access control” - “Feature A’s invoicing”