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Harry Booth

@harryboothtime

Reporter @TIME covering frontier AI companies. London bureau. Moving to the Bay in 2027. Signal: harry_booth.84

Ex-Tarbell fellow (May 2024 - Feb 2025)
London, England harrybooth.substack.com Joined June 2024
237 Following 864 Followers 571 Posts

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Harry Booth @harryboothtime
1.9x: The rate at which Anthropic is likely improving the capabilities of its models on well-specified tasks, compared with 2024, according to a METR assessment.
METR @METR_Evals 4d
Since August, a team within METR has worked with internal Anthropic information to assess whether AI itself is accelerating AI development.

We are now publishing a report summarizing the results of this risk assessment.
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Harry Booth @harryboothtime
EXCLUSIVE: @GoodfireAI has found a way to use interpretability tools to steer model training, potentially preventing AI models from ever learning to reward hack or be sycophantic in the first place.
time.com/article/2026/1…
time.com Scientists Have Found a New Way to Control AI's Behavior A new study, shared exclusively with TIME ahead of publication, reveals a promising technique for discouraging AI models from cheating by changing how they're trained.
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