tag:karta.sh,2026:blog Karta Blog 2026-07-08T00:00:00Z Karta https://karta.sh tag:karta.sh,2026:blog/harness-selection-part-1-baseline-token-efficiency How to select a harness to build your agent, part 1: baseline token efficiency 2026-07-08T00:00:00Z 2026-07-08T00:00:00Z Same model, different harness, very different fixed cost per turn. How to measure baseline token efficiency and use it to choose. Karta team https://karta.sh