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Humanity's Last Exam, no tools

Humanity's Last Exam without tools, every lab's reported score by release date, Claude Haiku 5.5 highlighted

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Humanity's Last Exam, no tools

ModelScoreSources
Claude Sonnet 4.517.7%AnnouncementFigure 2.16.A 'Humanity's Last Exam (HLE)', panel 'Without Search', bar 'Sonnet 4.5' (page 32)
Claude Haiku 4.510.2%AnnouncementPerformance table, row 'Multidisciplinary reasoning, Humanity's Last Exam', column 'Haiku 4.5', 'no tools'
Gemini 3 Pro37.5%Announcementbenchmark table (image), row 'Humanity's Last Exam', 'No tools', column 'Gemini 3 Pro'
Claude Opus 4.530.8%AnnouncementFigure 2.16.A 'Humanity's Last Exam (HLE)', panel 'Without Search', bar 'Opus 4.5' (page 32)
GPT-5.234.5%Announcementscience and math table, row 'HLE (no tools)', column 'GPT-5.2 Thinking'
Claude Opus 4.640.0%Announcementbenchmark table (image), row 'Multidisciplinary reasoning, Humanity's Last Exam', column 'Opus 4.6', 'without tools'
Gemini 3.1 Pro44.4%Announcementbenchmark table (image), row 'Humanity's Last Exam', 'No tools', column 'Gemini 3.1 Pro, Thinking (High)'
GPT-5.439.8%Announcementacademic table, row 'Humanity's Last Exam (no tools)', column 'GPT‑5.4'
Claude Opus 4.746.9%Announcementbenchmark table (image), row 'Multidisciplinary reasoning, Humanity's Last Exam', column 'Opus 4.7', 'no tools'
Claude Opus 4.849.8%Announcementbenchmark table (image), row 'Multidisciplinary reasoning, Humanity's Last Exam', column 'Opus 4.8', 'no tools'
Claude Opus 556.3%Announcementbenchmark table (image), row 'Multidisciplinary reasoning, Humanity's Last Exam', column 'Opus 5', 'no tools'
Claude Opus 5.564.4%AnnouncementSection 8.1 evaluation summary table, row 'Humanity's Last Exam, No tools', column 'Claude Opus 5.5'
Claude Haiku 5.545.9%AnnouncementPerformance table, row 'Multidisciplinary reasoning, Humanity's Last Exam', column 'Haiku 5.5', 'no tools'

Claude Haiku 5.5 on the timeline