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On a new independent AutomationBench leaderboard spanning 657 tasks across 40 simulated SaaS apps, Claude Fable 5 leads with 48.6% accuracy, narrowly ahead of Opus 4.8 at 48.5%, while every model tested still breaks business-rule guardrails at some rate.

Artificial Analysis's independent AutomationBench-AA leaderboard shows Claude Fable 5 narrowly leading over Opus 4.8, with Gemini and GPT-5.5 further behind, and notes every model still violates business-rule guardrails. ✦ AI generated

Artificial Analysis · Latent Space · 2026-07-07 · original ↗

AutomationBench-AA adds a more realistic agent eval: @ArtificialAnlys launched an independent leaderboard for Zapier’s AutomationBench, evaluating agents across 657 tasks and 40 simulated SaaS apps with both objectives and guardrails. Claude Fable 5 led at 48.6%, narrowly ahead of Opus 4.8 at 48.5%, with Gemini 3.5 Flash at 42.6% and GPT-5.5 xhigh at 42.1%.

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