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The 6 top stories of the 120 AIBriefs curated that day.
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Physical Superintelligence says its research system used a non-public Anthropic model to prove the Aaronson-Ambainis conjecture, open since 2008, in three days. The proof, formally verified in Lean, establishes a fundamental limit on quantum speedups.
Images 2.6 adds GIF creation, reusable reference images, and markup editing across ChatGPT, Codex, and the API. Two new API models, Flare and Sunburst, generate images 50% faster; Flare can produce a low-quality image in as little as six seconds.
Anthropic, PBC filed a Form S-1 for a proposed IPO of Class A common stock, planning to list on the Nasdaq Global Select Market under the ticker "ANT"; share count and price range are not yet set. Latent Space reports 1400% growth, 48% of revenue via cloud partners, 85% margin, and $417B in future AI spending.
Prospective buyers now discuss $1.2T–$1.3T, down from the $1.4T–$1.5T range pitched days earlier and $2T floated in early October. Three major investors told the WSJ the $1.5T target must come down, one suggesting ~$1T; Anthropic filed to list on Nasdaq as "ANT" and aimed to raise up to $100B.
The 770-billion-parameter flagship adds image understanding and computer use for the first time, trained on Blender and CAD. API pricing holds at $0.834/M input and $2.501/M output; weights and a system card are promised soon.
The Qwen X account posted a "The becoming begins" teaser, and Alibaba Cloud CTO Feifei Li reportedly said "Qwen4 next week" at the Amsterdam Apsara Conference on October 29. Expected variants include Qwen4-Max, Qwen4-Flash, Qwen4-Plus and Qwen4-27B.
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