AI Briefing — Monday, September 28, 2026

Source: Inference provider Modal Labs closing in on $750M round at $15.75B valuation

The new financing is expected to more than triples the AI infrastructure startup's valuation from just four months ago.

It's Time to Investigate the AI Labs

Shopify opens checkout to browser-based AI agents

Shopify is expanding WebMCP support to checkout, allowing browser-based AI agents to update order details and complete purchases with a buyer’s authorization.

MicroLLM Lab – Try 7 tiny LLM's in the browser

Nvidia launches new platform for reining in rogue AI agents

As the debate rages over whether the recent spate of rogue AI agents is a step toward AGI or a more conventional engineering problem, Nvidia is offering its own answer to problem. Nvidia CEO Jensen Huang on Monday intro…

Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner

Anthropic has released the newest version of its mid-range model, boasting faster response times and less token burn.

Launch HN: Vespper (YC F24) – SOTA Docx MCP

Hey HN! We're Dudu and Topaz from Vespper ( https://vespper.com ). Vespper is an MCP that lets AI agents efficiently edit Word documents, powered by our fine-tuned model. It's currently 3× faster, 2×…

Google is killing off Gemini’s Gems in favor of ‘skills’

As all-in-one AI agents like Meta's Muse and Instinct take off, Google is opting to end a feature which built task-specific agents.

OpenAI still doesn’t seem to have a handle on all of its rogue AI activity

On Friday, OpenAI published a new site devoted to “misalignment reports” and the breadth of the incidents is alarming.

Meta launches enterprise AI platform, hires MongoDB CEO to lead new initiative

Meta says it will focus on bringing its full technology stack, including Muse, Meta Business Agent, Muse API, Muse Code, and more to businesses and developers.

Holo4: powering generalist computer-use agents

Accelerating vision-language models with LFM2.5-VL-DSpark

How to Use NVIDIA Warp and MjWarp to Accelerate Robotics Simulation and Learning Workflows

How UK AISI and EvalEval Are Making Benchmark Results Reproducible

Transformers now runs llama.cpp quants

FuseReg: Regularizing Layer Fusion Mitigates the Reconstruction-Generation Gap in Representation Autoencoders

Representation autoencoders (RAEs) reuse features from a pretrained visual encoder as reconstruction and diffusion latents, integrating strong visual representations into image generation. However, RAEs still need to de…