https://gekro.com/news/2026-08-23/ gekro en 2026-08-23T07:39:03.049Z Agent loop harness engineering outweighs model choice; safety benchmarks show structural flaws https://gekro.com/news/2026-08-22/ gekro en 2026-08-22T07:37:01.940Z DeepSeek V4-Flash-Vision rivals Opus 4.8 on agent benchmarks; safety testing reveals benchmark gaming