ThursdAI: OpenAI drops 722 math papers, Haiku 5.5 hits 10 cents, Arena raises $200M
altryne · x · 2026-10-09
ThursdAI's weekly AI news roundup covers: OpenAI quietly releasing 722 math manuscripts (372 result families) from an unavailable model (dubbed a 'slop grenade'); Claude Haiku 5.5 dropping to 10 cents; Meta's new agent protocol with Stripe, Shopify and Walmart; OpenAI's Decisions API; Mistral 4; Arena's $200M raise; Reflection's Beam; Nisten's 100K-agent virtual Toronto; and Liquid AI's Maxime Labonne on decision models and D1. The hosts also built a Claude-powered 'Tinder' for AI news to stack-rank topics.
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