Meta releases Muse Spark Open, but local use still demands enormous memory
Meta released Muse Spark Open with downloadable weights, a custom commercial license and a published 700 GB minimum GPU-memory requirement for its NVFP4 configuration.
MathArena uses GPT-6.1 Sol to search 793 papers for mathematical counterexamples
MathArena’s audit of 793 arXiv papers found counterexamples to selected theorem statements, with major issues flagged in 6% of its earlier-period papers and incomplete validation of those flags.
Simons, Anthropic and OpenAI commit $15 million to help researchers navigate AI
The Simons Foundation, Anthropic and OpenAI announced $15 million in combined funding and resources for researchers evaluating and adapting to AI-assisted science.
Goodfire’s Nick Cammarata argues native neurons deserve another look
Nick Cammarata’s Goodfire essay argues that apparent mixtures in neurons often reflect shared patterns, while expert critics reject claims that interpretability is solved.
FLUX 3 Image Klein ships downloadable editing weights amid uneven first tests
Black Forest Labs released FLUX 3 Image Klein with multi-reference editing and conditional commercial rights, while early users reported mixed output quality.
Krea 3 launches hosted image editing at six cents per 2K image
Krea launched Krea 3 as a hosted image-editing model with six-reference inputs, native 2K output and published API pricing of $0.06 per 2K image.
Anthropic commits to embedded outside evaluators as METR assesses alignment
Anthropic committed to ongoing embedded third-party evaluation, while METR confirmed an alignment assessment whose actual access package remains unspecified publicly.
A web-header study finds rare prompt injections and a revealing authority failure
Signals Corps found 30 header-injection sites in a 217-million-response scan, while small tests showed that explicitly granting a website authority changed agent behavior.
Eight states sue OpenAI over ChatGPT safety claims in separate state actions
Eight state attorneys general filed separate suits alleging deceptive ChatGPT safety claims, with remedies and legal theories that vary by state and remain unadjudicated.
ChatGPT ads use conversation context and advertiser customer-list matching
OpenAI’s advertising documentation confirms contextual ad selection and customer-list matching, with at least 25,000 matched users required for audience inclusion or bid adjustments.