engblogs

summaries of the latest blog articles from your favorite tech companies.
OpenAIOpenAI

Introducing group chats in ChatGPT

ChatGPT now supports group chats, enabling collaborative conversations with friends, family, or coworkers powered by GPT-5.1 Auto, featuring shared control, personalized interactions, and enhanced social behaviors.

11/13/2025
OpenAIOpenAI

Introducing GPT-5.1 for developers

GPT-5.1 introduces adaptive reasoning, extended prompt caching, new developer tools, and enhanced coding capabilities for faster, more efficient, and reliable AI-powered workflows.

11/13/2025
OpenAIOpenAI

Understanding neural networks through sparse circuits

Training sparse neural networks with disentangled circuits enables more interpretable AI models by simplifying internal computations and isolating task-specific mechanisms.

11/13/2025
Two SigmaTwo Sigma

Treating Data as Code at Two Sigma

Two Sigma's adoption of treating data as code integrates software engineering best practices like version control, CI/CD, and automated quality checks to build scalable, reliable, and maintainable data systems, transforming their data engineering approach and improving operational efficiency.

11/13/2025
SpotifySpotify

Shuffle: Making Random Feel More Human

Spotify enhanced its Shuffle feature by introducing a 'Fewer Repeats' system that selects the freshest random playlist sequence to better align with user expectations of variety and surprise, while preserving true randomness.

11/13/2025
Lambda LabsLambda Labs

Prime Data Centers and Lambda Partner to Power the Next Era of Superintelligence with AI-Optimized Infrastructure in Southern California

Prime Data Centers partners with Lambda to deploy NVIDIA AI-optimized, high-density GPU infrastructure at the AI-ready LAX01 data center in Southern California, enabling superintelligence-scale AI workloads with scalable, efficient, and high-performance computing solutions.

11/13/2025
CloudflareCloudflare

Finding the grain of sand in a heap of Salt

Optimizing SaltStack triage at Cloudflare by decentralizing job caches, automating failure attribution, and enabling hierarchical self-service debugging to reduce release delays and operational toil.

11/13/2025
InstacartInstacart

Building The Intent Engine: How Instacart is Revamping Query Understanding with LLMs

Instacart revolutionizes query understanding by leveraging Large Language Models with domain-specific fine-tuning, context engineering, and production optimizations to enhance search accuracy, handle long-tail queries, and streamline system complexity.

11/13/2025
Google DeepMindGoogle DeepMind

SIMA 2: An Agent that Plays, Reasons, and Learns With You in Virtual 3D Worlds

SIMA 2 is an advanced AI agent powered by Gemini models that plays, reasons, learns, and collaborates with users in diverse virtual 3D gaming environments, demonstrating significant progress toward generalist embodied intelligence with self-improvement capabilities.

11/13/2025
OpenAIOpenAI

Fighting the New York Times’ invasion of user privacy

OpenAI defends user privacy against a New York Times court demand by outlining a privacy-first security roadmap, including de-identification, client-side encryption, secure data handling, and legal safeguards to protect conversations.

11/12/2025
OpenAIOpenAI

GPT-5.1 Instant and GPT-5.1 Thinking System Card Addendum

Introduction to GPT-5.1 Instant and GPT-5.1 Thinking models featuring enhanced conversational abilities, adaptive reasoning, precise thinking time adjustments, and updated safety evaluations including mental health and emotional reliance considerations.

11/12/2025
OpenAIOpenAI

GPT-5.1: A smarter, more conversational ChatGPT

GPT-5.1 introduces smarter, more conversational AI models with enhanced adaptive reasoning, improved instruction following, and customizable tone settings for a personalized ChatGPT experience.

11/12/2025