SpaceX Closes Its $60B Cursor Deal — AI Digest

SpaceX Closes Its $60B Cursor Deal — AI Digest

SpaceX closed its record Cursor deal, Anthropic investors eye a $2T IPO, GLM-5.3 found 2,436 vulnerabilities in open source, and Qwen plus Meta gave local models their best week yet.

A day of big money and big weights: SpaceX closed its record $60B Cursor acquisition, Anthropic investors are eyeing a $2T IPO, Z.ai shipped GLM-5.3 with surprisingly strong cybersecurity skills, and Qwen dropped open weights for a multimodal 27B — local models just had their best week of the year.

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SpaceX closes the Cursor deal: $60 billion in stock. The acquisition announced in June (CNBC) was completed on August 14: per the Form 8-K filed with the SEC, Anysphere (Cursor) shareholders received roughly 389.3 million SpaceX Class A shares — a $60 billion all-stock valuation. Cursor becomes a wholly owned unit of the new SpaceXAI division (Investing.com). The most popular AI code editor now belongs to a rocket company — and somehow that no longer sounds odd: coding agents and harnesses have become infrastructure, priced accordingly.

Anthropic investors expect a $2 trillion IPO. According to Financial Times reporting relayed by Fortune and Quartz, six of the company's investors expect a valuation of $2 trillion or more at the October listing — the largest IPO in history, above SpaceX's current $1.77T mark. The case rests on revenue velocity: investors project $100–120 billion in annualized revenue by year-end, up from $47 billion in May (Silicon Republic). One important caveat: these numbers come from investors, not the company. More skepticism in Perspectives below.

GLM-5.3: cybersecurity as an RL side effect. Z.ai released GLM-5.3 — same base model as GLM-5.2, with every gain coming purely from scaled post-training RL on long agentic tasks (the open slime + SAO stack). The jumps are real: Terminal-Bench 3.0 at 28.3 versus 4.6 for its predecessor, DeepSWE v1.1 at 66.9 versus 46.2 (SiliconANGLE). The headline surprise is emergent cybersecurity: 84.5% on CyberGym (first place in Z.ai's comparison) and 2,436 vulnerabilities found across 269 open-source projects, 1,097 of them critical or high severity. Per VentureBeat, the model reportedly found a serious vulnerability in Cursor itself. Weights are promised roughly two weeks out, after a safety review.

Local models' best week. Qwen published open weights for Qwen 3.8 27B — a natively multimodal dense model (an FP8 variant is up too; the hosted version carries a 1M context window). Days earlier Meta opened Muse Glimmer 30B — 29.6B parameters under Apache 2.0, under 20 GB at ~4-bit, built for always-on local agentic workflows (NVIDIA's walkthrough). Add the promised GLM-5.3 weights, and local-inference enthusiasts are having a feast (see our curated Open Source section for tools and models to run yourself).

Numbers that matter

Perspectives: is $2 trillion for Anthropic justified — or a bubble?

Tools and techniques

In brief