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Simon Willison's NewsletterContent type: Blog

I think Anthropic and OpenAI have found product-market fit (opens in new tab)

Covers 38 stories See all stories this covers including Encyclical Letter of His Holiness Leo XIV Magnifica Humanitas (15 May 2026)Discussed on Substack

Plus Claude Opus 4.8: “a modest but tangible improvement”, and the Pope!

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