Frontier Models Still Struggle to Build Agents and Harnesses

Developers note frontier models remain weak at building other agents and harnesses, with unsaturated benchmarks like Frontierswe, Mirrocode, Posttrainbench and Agents Leaderboard best exposing these gaps.

2026-08-23 ~ 2026-08-23 · 3 related posts

• Building Agents Remains a Major Weakness for Models — GeorgeMayer · 2026-08-23
• Models still struggle to build other agents and harnesses — dejavucoder · 2026-08-23
• Explore Unsaturated Benchmarks: Frontierswe and More Reveal Model Shortcomings — dejavucoder · 2026-08-23