AI Briefing — Friday, September 11, 2026

Mecka AI nears $500M valuation in Sequoia-led deal amid rush for robot training data

The round for the two-year-old startup is coming together months after Mecka announced its Series A.

Y Combinator’s Garry Tan wants US open-weight AI labs to ‘distill’ frontier models, too

Tan wants smaller, American open-weight AI labs to use the same kind of training techniques on American frontier AI labs, giving the U.S. a more robust set of open-weight options that aren’t Chinese.

OpenAI’s feud with mathematicians is only escalating

Twenty-five leading mathematicians signed an open letter arguing that AI labs are threatening their intellectual work.

Kimi-maker Moonshot AI targets $2B in annual revenue

While K3's usage figures have declined slightly in recent months, OpenRouter data currently shows as many as 300 billion tokens being generated each day by K3 models on the system.

An Anthropic researcher’s doomsday warning comes at a very interesting time

An Anthropic researcher resigned this week, warning in a post on X that the company is “racing straight to self-improving superintelligence and gambling with our lives”. The company’s own alignment lead even co-signed t…

A misalignment of AI in mathematics

https://terrytao.wordpress.com/2026/09/11/a-severe-misalignm... https://www.economist.com/science-and-technology/2026/09/11/... , https://unwall.app/www.economist.com/science-and-technology/...

Zep AI (YC W24) Is Hiring a Head of Forward Deployed Engineering

Nscale adds former OpenAI exec Fidji Simo to its board ahead of potential IPO

The No. 2 exec at OpenAI also led Instacart through its IPO in 2023.

Show HN: Godot and Rust based multiplexer (terminal panes and more)

I wanted to share my side-project: gPTY. Started off as an idea to combine Godot and Rust in a project (two stacks I wanted to use more to learn more). The base inspiration was tmux - simply allow sp…

Claude is only available to people over 18 years

Rebuilding AUTOMATIC1111 with Gradio Workflow

IBM releases SOTA Granite Time Series PatchTST-FM-r2 model with commercial-friendly license

Safety for Whom? Refusing the Right Subset of a Topic, Not the Whole Topic

NeoMME: an efficient Multimodal-native and Multilingual Encoder

Fine-tuning a 350M Model for Better Structured Outputs in 100 GRPO Steps