FrontierCS integrated into Harbor, releasing long-horizon agent leaderboard.

Core summary

One sentence to understand this update

FrontierCS has been integrated into Harbor, and a preview long-horizon agent leaderboard (up to 835 turns, ~200K output tokens) is being released, featuring Kimi K2.6 and Claude Code Opus 4.7.

Impact & opportunity

What this could mean

Builders can benchmark and evaluate long-horizon agents using this new leaderboard, driving innovation in complex AI agent development.