Meta releases Muse Spark Open: open-weight model with 816 billion parameters

On 15 October, Meta released Muse Spark Open, a multimodal mixture-of-experts model of roughly 816 billion parameters, of which around 42 billion are active per token, with a context window of up to one million tokens. The model reads text, images, audio and video and returns text; the weights are available on Hugging Face and run with vLLM, SGLang and llama.cpp, among others. The Muse Model License permits fine-tuning and commercial use, but you must credit 'Built with Muse Spark Open', and any model service with annual revenue above $20 million needs a separate agreement with Meta.

What does this mean? You can now run a large Meta model yourself or with a hosting partner of your choice, so your data does not go to Meta; however, expect heavy hardware requirements and read the licence terms.

ChatGPT extension for Chrome can read and operate your tabs

On 15 October, OpenAI expanded the ChatGPT extension for Chrome: in Chat, ChatGPT looks across your open tabs, while in Work it can operate tabs to, for example, send messages, fill in forms and download files. According to Unite.AI, the extension is available on all ChatGPT plans and also works in Edge, Brave, Opera and Vivaldi. By default, ChatGPT asks for permission before working with a new website.

What does this mean? If you give ChatGPT access to your browser, it can also read and send data from business web apps; only allow this on a per-site basis and never for systems holding customer or patient data.

Claude Code Review is now generally available for Team and Enterprise

On 15 October, Anthropic made Code Review, the automated checking of pull requests on GitHub, generally available for Claude Team and Enterprise. According to Anthropic, most reviews are about three times faster than in preview (6 to 10 minutes instead of roughly 20), and administrators choose between Quick, Standard and Deep for each repository. Reviews run on Anthropic's infrastructure; organisations with Zero Data Retention or a HIPAA configuration cannot use the feature.

What does this mean? Development teams can have code reviewed automatically, but your source code then goes to Anthropic; if you have agreed Zero Data Retention, this feature is switched off.

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