The A.I. Daily
Mac Studio M5 Ultra 512GB starts at $22,299
A community post notes the Mac Studio with M5 Ultra and 512GB starts at $22,299, likely aimed at high-memory workloads such as running local large models.
Mac Studio
4 storiesMac Studio is Apple's desktop Mac line, and the recent M5 Ultra version is discussed for high-memory local AI workloads. Coverage has focused on the 512GB model starting at $22,299, a 256GB 80-core unit tested with GLM-5.3-Flash where the GPU appeared underpowered for the RAM, and a user running Qwen3.8-Flash-Next locally who saw the model generate a signed Alibaba Cloud OSS URL.
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Qwen model reportedly hallucinated signed Alibaba Cloud URL
A user running Qwen3.8-Flash-Next locally on a Mac Studio saw the model generate a signed URL pointing to an Alibaba Cloud OSS bucket during browser tool calls for Amazon product research, and stopped the session. The user found a similar report from 45 days earlier and said it may be a harmless hallucination from Alibaba coding traces in training data, though data exfiltration cannot be ruled out.
M5 Ultra Mac Studio tested with GLM-5.3-Flash
A user tested GLM-5.3-Flash and other models on an M5 Ultra 256GB 80-core Mac Studio over many rounds of agentic inference, finding performance satisfying but the GPU clearly underpowered for the RAM, suggesting a 512GB unit may be GPU-bottlenecked.
M5 Ultra Mac Studio review: the dream Mac for local AI agents
A review calls the M5 Ultra Mac Studio the ideal Mac for running local AI agents. It highlights Apple silicon's performance on local AI workloads amid rising demand for on-device AI hardware.
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