New open-weight Hy4 language model offers authoring potential
Emerging AI model available now; evaluate practical applications for your writing workflow.
Original source — simonwillison.nethttps://simonwillison.net/2026/Aug/29/hy4/
This story ran in the Coral Wire edition of Sun, Aug 30 2026, when the Coral Index stood at 40/100 (Headwinds).
Coral Wire selects stories by a Claude-graded relevance score and writes each headline and one-line summary with an Anthropic Claude model from the linked source. Story gathering is not AI: it is a fixed set of feeds and dockets. The linked original is always the authority.
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