Checked fact 42868 Nov 2026Safety and security
METR estimates that benchmark scores (AECI, Anthropic's version of the Epoch Capabilities Index) for Anthropic's models have grown since October 2025 at about 1.9x the pre-October 2025 rate (95% confidence interval 1.5 to 2.8x), implying roughly two years of historical progress over the last year.
The exact words it rests on
Since October 2025, benchmark scores (measured via AECI, Anthropic’s version of the Epoch Capabilities Index) for Anthropic’s models have been growing at an estimated 1.9x the pre-October 2025 rate [95% confidence interval: 1.5–2.8x], implying that Anthropic has made roughly two years of historical progress over the last year.
What the source said when we opened it, on 8 Nov 2026.
The source
Independent assessment of AI R&D acceleration at Anthropic
Checked
Checked by the notis newsroom on , against the source above.
In the story
Anthropic's model scores grew about 1.9 times faster since October 2025, METR estimates 8 Nov 2026
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