The Day Of All The Models

SpaceXAI debuted Grok 4.5 with Cursor, targeting Opus-level performance at lower cost. Meta launched Muse Spark 1.1 via API, OpenAI rolled out full-duplex GPT-Live voice models, PrismML ran the largest AI model on an iPhone, and Character.AI launched AI microdramas.

• SpaceXAI debuts Grok 4.5, its first model built in partnership with Cursor, designed to "handle difficult, long-running tasks" across finance, legal, and coding (Bloomberg)
• Meta releases Muse Spark 1.1, capable of more advanced coding and a "step-change" from the first generation, available to US developers via a public API preview (The Verge)
• OpenAI launches GPT-Live, new voice models powering ChatGPT Voice and built on a full-duplex architecture, meaning they can listen and speak at the same time (OpenAI)
• OpenAI launches GPT-Live, new voice models powering ChatGPT Voice and built on a full-duplex architecture, meaning they can listen and speak at the same time (VentureBeat)
• PrismML says it ran a 27B-parameter Qwen 3.6 model on an iPhone 17 Pro, bigger than any prior on-device model; sources: Apple held talks with PrismML about it (The Information)
• Character.AI launches three human-written, AI-generated microdramas, whose characters users can chat with, and aims to eventually let users make their own shows (TechCrunch)

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