How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Do Agent Teams Pay Off? A Case Study on Vibe Code Bench

calendar_today October 9, 2026 domain vals-ai

We ran GPT 6 Sol and Claude Opus 5.5 on Vibe Code Bench as single agents and as teams, at medium and max reasoning effort. Teams cost 1.8 to 5.1 times as much, and only for Sol at medium effort was the difference in score statistically significant. Whether a team is worth it depends on the model, task, and budget: a team can boost performance, but higher reasoning effort is an alternative worth weighing.

open_in_new Read original post