aiaimodel.cards
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OSWorld 2.0 (strict)

Operating a real desktop through screenshots, mouse and keyboard to finish tasks across common apps.

  1. 1Claude Opus 5.5 · Anthropic
    48.7%
  2. 2Claude Fable 5.1 · Anthropic
    41.7%

How each maker reported it

  • Claude Opus 5.5 Table 8.1.A, p.174

    Claude results use adaptive thinking at max effort, averaged over five trials (Terminal-Bench 4.0 at xhigh). Competitor figures come from the developers' own published results.

  • Claude Fable 5.1 Table 8.1.A, p.167

    Fable 5.1 and Mythos 5.1 share weights, so column 0 covers both (likewise Fable 5 / Mythos 5). Claude results use adaptive thinking at max effort, averaged over five trials. Terminal-Bench 4.0 values are from §8.6, p.171 (Mythos 5.1: 60.9%; GPT-5.6 Sol from the public leaderboard). Competitor figures come from the developers' own published results or leaderboards.

Only each model's own maker's number is shown; scores a maker reports for rival models are left out.