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Meta releases Muse Spark Open weights: 816B MoE coding model that runs on two Mac Studios

Meta released open weights for Muse Spark Open on Oct 15, a natively multimodal 816B-total / 42B-active model with 1M context built for coding and agentic work, under the Muse Model License with limited commercial terms. It runs on two M5 Ultra Mac Studios via MLX, on vLLM, SGLang, and llama.cpp, and through hosts like OpenRouter, Together AI, Fireworks, and Groq.

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GitHub agentic autofix for code scanning alerts is now generally available

Assign a code scanning alert to Copilot and it explores the codebase, proposes a fix, and reruns CodeQL to confirm the alert closes before opening a PR for review; you can batch up to 25 alerts into one PR. GA as of Oct 15 for Code Security and Advanced Security customers on GitHub Enterprise Cloud, once an enterprise admin enables the new policy…

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