FrontierCode 1.1 Leaderboard Debuts: Opus 5.5 Leads at 52%

Artificial Analysis launched a leaderboard for Cognition's FrontierCode 1.1 benchmark, where Claude Opus 5.5 tops the ranking at 52.2% even as leading models fail roughly 40% of tasks. The analysis also reveals huge gaps in speed and cost, with DeepSeek V4.1 Flash running at about 40% of Opus 5.5's time and per-task costs ranging from $0.09 to $12.

2026-10-13 ~ 2026-10-13 · 4 related posts

• FrontierCode 1.1 leaderboard: Claude Opus 5.5 tops at 52% as leading models fail 40%+ of tasks — ArtificialAnlys · 2026-10-13
• FrontierCode cost analysis: $0.09 to $12 per task, GPT-6 models lead token efficiency — ArtificialAnlys · 2026-10-13
• FrontierCode speed analysis: DeepSeek V4.1 Flash runs tasks ~7 min, 40% of Opus 5.5's time — ArtificialAnlys · 2026-10-13
• Full FrontierCode 1.1 leaderboard goes live, Claude Opus 5.5 leads at 52.2% — ArtificialAnlys · 2026-10-13