Claude 5.6 Terra High 评测：速度提升40%，质量无损

5.6 Terra high is underrated. Switched @clawsweeper (GitHub review bot) to it and it's ~40% faster overall with negligible quality loss. Better than 5.5 on all counts. Massively cheaper.

(Tried xhigh but that negates perf wins, didn't make a noticable difference in review evals)