AI21 trained Nemotron 3.5 Super with GRPO, boosting attack resilience 41 points

Cal AI generated over $30 million in revenue in two years and was acquired by MyFitness in March for an undisclosed amount. Founder Zach Yadegari, 19, said an early influencer post brought ~1,000 users in two days, prompting him to pay influencers for guaranteed reach.

d1-ultra reads text, images, or both in a single forward pass and returns calibrated probabilities for boolean, choice, and score questions instead of generating text. It supports a 32,768-token context window and is billed on input tokens only, including image input, with no output-token charges.

With the extension installed, ChatGPT can view open browser tabs when you tag Chrome in its web or desktop app, and ChatGPT Work can control tabs to send messages, fill forms, or download files. OpenAI's ChatGPT Atlas browser is gone.

In a No Priors conversation, OpenAI president Greg Brockman argued security budgets should exceed software budgets. No figures or timelines were given.

A r/StableDiffusion post calls Kroma, hosted on Civitai, the best image model so far, saying it is good at everything but lacks artist-name knowledge compared with Anima.

Code Review is out of research preview for Claude Team and Enterprise plans, with most reviews now finishing about 3x faster (~20 minutes down to 6-10 minutes). Admins pick Quick, Standard or Deep per repository; eligible Enterprise orgs can claim at least $10,000 in credits by January 15, 2027.