Anthropic's Opus 5.5 Beats Larger Models at Lower Cost Amid 'Pacing the Frontier' Pledge

Skynet Chance (+0.03%): A smaller model surpassing a larger one while retaining Fable-tier bio and cyber capabilities means dangerous capability is becoming cheaper and more widely deployable, though the retained safeguards, METR/Frontier Design evaluations, and Amodei's explicit pacing commitment partially offset the added risk.

Skynet Date (-1 days): A two-month release cadence with simultaneous capability gains and cost reductions compresses the timeline for broadly available high-risk capabilities, only modestly tempered by the stated intent to slow the frontier and build policy infrastructure.

AGI Progress (+0.04%): Achieving state-of-the-art coding and knowledge-work performance while beating a substantially larger model demonstrates real gains in capability-per-compute rather than mere scaling, which is directly relevant to the path toward general capability.

AGI Date (-1 days): Falling inference costs, faster runtimes, and a two-month iteration cycle with derivative Sonnet and Haiku releases imminent suggest frontier capability is diffusing faster than a pure-scaling trajectory would predict, pulling AGI timelines modestly earlier.