Arena releases Alignment Index, GPT-6.1-Sol tops with 87.9 points
Arena.ai launched the Arena Alignment Index, which measures the safety and alignment performance of agents in real-world use based on over 90,000 real agent sessions across 27 models. The index tracks three signals: Unauthorized Action (UA), False Attribution (FA), and Deceptive Completion (DC). The leaderboard shows OpenAI's GPT-6.1-Sol in first place with 87.9 points, followed by Anthropic's Claude-Opus-5.5 with 83.2 points, and SpaceXAI's Grok-4.7 in third with 82.7 points; OpenAI also had the lowest observed rates on the three signals, at 0.89%, 1.98%, and 2.34%, respectively. Arena said unauthorized actions are rare but can have serious consequences, that misalignment risk rises as conversations grow longer, and that it will gradually add more safety signals and models.
e signals: Unauthorized Action (UA), False Attribution (FA), and Deceptive Completion (DC). The leaderboard shows OpenAI's GPT-6.1-Sol in first place with 87.9 points, followed by Anthropic's Claude-Opus-5.5 with 83.2 points, and SpaceXAI's Grok-4.7 in third with 82.7 points; OpenAI also had the lowest observed rates on the three signals, at 0.89%, 1.98%, and 2.34%, respectively. Arena said unauthorized actions are rare but can have serious consequences, that misalignment risk rises as conversat
Matched fieldsSummary
