What tips and tricks have you found to save tokens and make your coding sessions last longer?

I did some benchmarking, and the results are interesting.

https://analyzer.spec-kitty.ai/proof/

Agent Analyzer guidance reduced measured token waste and API-rate cost in repeated controlled runs.

On the larger noisy repo, three fresh Agent Analyzer guided runs averaged 12,370 fewer estimated tokens, 12,698 fewer tool-output tokens, 504 fewer Claude output tokens while preserving the quality gate. Repriced at published Claude Sonnet 4.6 API rates, the repeated mean delta was -$0.059207, or 23.986% lower cost.

Some of the techniques and tools used are shown here:
https://analyzer.spec-kitty.ai/proof/methodology.html

We'll be launching the tool on PH tomorrow, hope you support us!