2026-04-08
Fast state-of-the-art image and video segmentation in portable C/C++
Tensors, for human consumption
Pelicans for Meta's new Muse Spark models - plus I did a bit of a deep dive into the Code Interpreter and fascinating "container.visual_grounding" tools in their meta.ai chat UI simonwillison.net/2026/Apr/8/m...
So many people assume that story generation has been solved for a while. Mythos is showing one of the typical failure modes of LLM story generation: taking refuge in prolonged banter between characters that never advances the plot or understanding of the characters.
Local NPR coverage of my work with Dr. Jennifer Kim on building LLM-based tools to support neurodivergent job seekers www.gpb.org/news/2026/03...
I have strongly hesitated becoming too dependent on AI myself because I suspected some version of this would be true. 😭
New report is out with the latest open model adoption data we have gathered for Interconnects & The ATOM Project. At the surface level, we can see Chinese models continuing to accelerate in adoption. The report details much more. atomproject.ai/report
In different hands, Mythos would be an unprecedented cyberweapon I am not sure how we deal with this, except to note a narrow window where we know only 3 companies could be at this level of capability. But it may be Chinese models (maybe open weights ones?) get there in 9 months.
I think the story that was shared in the Mythos System Card still has the signs of flawed LLM writing (which looks like good writing at a glance): A story that doesn't really hold together logically, but sounds like it should. The back-and-forth banter. Lack of characters. Writing fiction is hard!
<p>Meta <a href="https://ai.meta.com/blog/introducing-muse-spark-msl/">announced Muse Spark</a> today, their first model release since Llama 4 <a href="https://simonwillison.net/2025/Apr/5/llama-4-notes/">almost exactly a year ago</a>. It's hosted, not open weights, and the API is currently "a...