Models
Frontier and open models: what shipped, what it can do, and how the claims hold up.
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Total vs active parameters explained in 2 minutes
In a mixture-of-experts model, only a small share of the parameters does the work on each word, which is why two numbers…
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Open weights
A model whose trained parameters are published so anyone can download and run it, usually without the training data or code.
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Open Weights vs Closed Models: What “Open” Actually Means in AI
An open-weights model hands you the trained file to run yourself; a closed model only lets you use it through someone else’s…
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Nvidia adds a 120bn Nemotron and two models built to run on one machine
Nemotron 3.5 Super VL and two smaller Bolt models are out with open weights, and every performance figure in the announcement is…
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Black Forest Labs ships a small open-weights image model, size unclear
FLUX.3 Image Klein is out in distilled and base versions, but the lab and the model cards disagree on how many parameters…
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Meta publishes open weights for an 816bn-parameter Muse Spark model
Meta has put open weights for a Muse Spark model on Hugging Face, with no benchmark results and no licence terms in…
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Microsoft adds more than 20 legal AI skills to Copilot in Word
Copilot for Legal brings contract review, drafting and comparison tools into Word, with partner plugins from legal tech firms.
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FDA clears an AI tool that uses breast MRI to estimate cancer recurrence risk
SimBioSys’s TumorSight Risk gives five and ten year recurrence estimates from MRI scans patients already have.
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Physical Intelligence opens its robot models through a hosted API
Physical Intelligence has opened a waitlisted beta of its Pi API, letting outside developers fine-tune its robot models on the company’s compute…
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Google DeepMind and GovTech tune Gemma to catch scams on the handset
A Gemma model tuned on Singapore’s own scam patterns runs on the phone rather than a server, and Google has not said…