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The lead

Who has held the top score on Epoch’s Capabilities Index, and for how long. The index scores models across many benchmarks at once; its data starts in Feb 2023.

OpenAI holds the top score, 166.6 with GPT-6 Astra, and has held it for 22 days. Anthropic is at 165.0; their error bars overlap, so in practice this is a tie.

90100110120130140150160170202420252026OpenAI 166.6Anthropic 165.0Google DeepMind 157.7Moonshot 157.7Meta 156.9Alibaba 156.7xAI 156.5Z.ai (Zhipu AI) 155.6OpenAINew best: 125.914 Mar 2023Lab pageOpenAINew best: 126.525 Jan 2024Lab pageOpenAINew best: 127.29 Apr 2024Lab pageOpenAINew best: 129.013 May 2024Lab pageOpenAINew best: 134.812 Sep 2024Lab pageOpenAINew best: 135.812 Sep 2024Lab pageOpenAINew best: 141.917 Dec 2024Lab pageOpenAINew best: 145.616 Apr 2025Lab pageOpenAINew best: 146.916 Apr 2025Lab pageOpenAINew best: 147.410 Jun 2025Lab pageOpenAINew best: 150.07 Aug 2025Lab pageOpenAINew best: 150.37 Oct 2025Lab pageOpenAINew best: 153.411 Dec 2025Lab pageOpenAINew best: 155.411 Dec 2025Lab pageOpenAINew best: 156.85 Feb 2026Lab pageOpenAINew best: 156.95 Mar 2026Lab pageOpenAINew best: 159.15 Mar 2026Lab pageOpenAINew best: 159.223 Apr 2026Lab pageOpenAINew best: 162.423 Apr 2026Lab pageOpenAINew best: 166.63 Sep 2026Lab pageAnthropicNew best: 120.111 Jul 2023Lab pageAnthropicNew best: 120.29 Aug 2023Lab pageAnthropicNew best: 120.729 Feb 2024Lab pageAnthropicNew best: 126.929 Feb 2024Lab pageAnthropicNew best: 130.020 Jun 2024Lab pageAnthropicNew best: 133.622 Oct 2024Lab pageAnthropicNew best: 141.224 Feb 2025Lab pageAnthropicNew best: 141.722 May 2025Lab pageAnthropicNew best: 142.722 May 2025Lab pageAnthropicNew best: 144.15 Aug 2025Lab pageAnthropicNew best: 146.829 Sep 2025Lab pageAnthropicNew best: 150.124 Nov 2025Lab pageAnthropicNew best: 155.45 Feb 2026Lab pageAnthropicNew best: 156.416 Apr 2026Lab pageAnthropicNew best: 158.328 May 2026Lab pageAnthropicNew best: 163.69 Jun 2026Lab pageAnthropicNew best: 165.01 Sep 2026Lab pageGoogle DeepMindNew best: 117.013 Dec 2023Lab pageGoogle DeepMindNew best: 126.914 May 2024Lab pageGoogle DeepMindNew best: 129.424 Sep 2024Lab pageGoogle DeepMindNew best: 131.724 Sep 2024Lab pageGoogle DeepMindNew best: 134.711 Dec 2024Lab pageGoogle DeepMindNew best: 135.421 Jan 2025Lab pageGoogle DeepMindNew best: 144.231 Mar 2025Lab pageGoogle DeepMindNew best: 145.35 Jun 2025Lab pageGoogle DeepMindNew best: 153.018 Nov 2025Lab pageGoogle DeepMindNew best: 154.919 Feb 2026Lab pageGoogle DeepMindNew best: 157.713 Aug 2026Lab pageMoonshotNew best: 140.112 Jul 2025Lab pageMoonshotNew best: 146.06 Nov 2025Lab pageMoonshotNew best: 148.127 Jan 2026Lab pageMoonshotNew best: 151.020 Apr 2026Lab pageMoonshotNew best: 157.716 Jul 2026Lab pageMetaNew best: 96.124 Feb 2023Lab pageMetaNew best: 100.124 Feb 2023Lab pageMetaNew best: 107.124 Feb 2023Lab pageMetaNew best: 109.924 Feb 2023Lab pageMetaNew best: 113.618 Jul 2023Lab pageMetaNew best: 116.318 Apr 2024Lab pageMetaNew best: 122.918 Apr 2024Lab pageMetaNew best: 125.923 Jul 2024Lab pageMetaNew best: 128.823 Jul 2024Lab pageMetaNew best: 129.65 Apr 2025Lab pageMetaNew best: 132.26 Apr 2025Lab pageMetaNew best: 152.18 Apr 2026Lab pageMetaNew best: 154.39 Jul 2026Lab pageMetaNew best: 155.25 Aug 2026Lab pageMetaNew best: 156.92 Sep 2026Lab pageAlibabaNew best: 112.824 Sep 2023Lab pageAlibabaNew best: 125.37 Jun 2024Lab pageAlibabaNew best: 128.517 Sep 2024Lab pageAlibabaNew best: 129.019 Sep 2024Lab pageAlibabaNew best: 132.525 Jan 2025Lab pageAlibabaNew best: 137.65 Mar 2025Lab pageAlibabaNew best: 139.428 Apr 2025Lab pageAlibabaNew best: 143.925 Jul 2025Lab pageAlibabaNew best: 146.613 Feb 2026Lab pageAlibabaNew best: 146.816 Feb 2026Lab pageAlibabaNew best: 147.731 Mar 2026Lab pageAlibabaNew best: 149.320 Apr 2026Lab pageAlibabaNew best: 153.719 May 2026Lab pageAlibabaNew best: 156.72 Aug 2026Lab pagexAINew best: 130.512 Dec 2024Lab pagexAINew best: 138.39 Apr 2025Lab pagexAINew best: 140.324 Jun 2025Lab pagexAINew best: 146.59 Jul 2025Lab pagexAINew best: 152.017 Feb 2026Lab pagexAINew best: 154.08 Jul 2026Lab pagexAINew best: 156.512 Aug 2026Lab pageZ.ai (Zhipu AI)New best: 143.522 Dec 2025Lab pageZ.ai (Zhipu AI)New best: 145.811 Feb 2026Lab pageZ.ai (Zhipu AI)New best: 149.97 Apr 2026Lab pageZ.ai (Zhipu AI)New best: 151.816 Jun 2026Lab pageZ.ai (Zhipu AI)New best: 155.614 Aug 2026Lab pageMeta takes the leadLLaMA-7B: 96.124 Feb 2023, held 18 daysOpenAI takes the leadGPT-4 (Mar 2023): 125.914 Mar 2023, held 352 daysSystem pageAnthropic takes the leadClaude 3 Opus: 126.929 Feb 2024, held 40 daysSystem pageOpenAI takes the leadGPT-4 Turbo (Apr 2024): 127.29 Apr 2024, held 72 daysSystem pageAnthropic takes the leadClaude 3.5 Sonnet: 130.020 Jun 2024, held 84 daysSystem pageOpenAI takes the leado1-preview: 134.812 Sep 2024, held 200 daysSystem pageGoogle DeepMind takes the leadGemini 2.5 Pro (Mar 2025): 144.231 Mar 2025, held 16 daysSystem pageOpenAI takes the leado4-mini: 145.616 Apr 2025, held 216 daysGoogle DeepMind takes the leadGemini 3 Pro: 153.018 Nov 2025, held 23 daysSystem pageOpenAI takes the leadGPT-5.2: 153.411 Dec 2025, held 180 daysSystem pageAnthropic takes the leadClaude Fable 5: 163.69 Jun 2026, held 86 daysSystem pageOpenAI takes the leadGPT-6 Astra: 166.63 Sep 2026, 22 days so farSystem page

Every change of lead

DateLabModelScoreDays held
3 Sep 2026OpenAIGPT-6 Astra166.622
9 Jun 2026AnthropicClaude Fable 5163.686
11 Dec 2025OpenAIGPT-5.2153.4180
18 Nov 2025Google DeepMindGemini 3 Pro153.023
16 Apr 2025OpenAIo4-mini145.6216
31 Mar 2025Google DeepMindGemini 2.5 Pro (Mar 2025)144.216
12 Sep 2024OpenAIo1-preview134.8200
20 Jun 2024AnthropicClaude 3.5 Sonnet130.084
9 Apr 2024OpenAIGPT-4 Turbo (Apr 2024)127.272
29 Feb 2024AnthropicClaude 3 Opus126.940
14 Mar 2023OpenAIGPT-4 (Mar 2023)125.9352
24 Feb 2023MetaLLaMA-7B96.118

Days in the lead, by lab

LabDays
OpenAI1042
Anthropic210
Google DeepMind39
Meta18

Data: Epoch AI (Creative Commons Attribution), releases too new for it from OpenRouter, and METR. Updated 25 Sep 2026.