Build a Domain-Specific Embedding Model in Under a Day

How we monitor internal coding agents for misalignment

How OpenAI uses chain-of-thought monitoring to study misalignment in internal coding agents—analyzing real-world deployments to detect risks and strengthen AI safety safeguards.

OpenAI to acquire Astral

Accelerates Codex growth to power the next generation of Python developer tools

State of Open Source on Hugging Face: Spring 2026

Measuring progress toward AGI: A cognitive framework

We’re introducing a framework to measure progress toward AGI, and launching a Kaggle hackathon to build the relevant evaluations.

Holotron-12B - High Throughput Computer Use Agent

Introducing GPT-5.4 mini and nano

GPT-5.4 mini and nano are smaller, faster versions of GPT-5.4 optimized for coding, tool use, multimodal reasoning, and high-volume API and sub-agent workloads.

OpenAI Japan announces Japan Teen Safety Blueprint to put teen safety first

OpenAI Japan announces the Japan Teen Safety Blueprint, introducing stronger age protections, parental controls, and well-being safeguards for teens using generative AI.

Equipping workers with insights about compensation

New research shows Americans send nearly 3 million daily messages to ChatGPT asking about compensation and earnings, helping close the wage information gap.

Introducing Forge

Today, we’re introducing Forge, a system that allows enterprises to build frontier-grade AI models grounded in their proprietary knowledge.

Cohere advances sovereign AI capabilities with NVIDIA

NVIDIA ecosystem-native model and local North instance will meet growing market demand for secure, privately run AI systems

Why Codex Security Doesn’t Include a SAST Report

A deep dive into why Codex Security doesn’t rely on traditional SAST, instead using AI-driven constraint reasoning and validation to find real vulnerabilities with fewer false positives.

Leanstral: Open-Source foundation for trustworthy vibe-coding

First open-source code agent for Lean 4.

Mistral AI partners with NVIDIA to accelerate open frontier models

As a founding member of the NVIDIA Nemotron Coalition, Mistral AI is contributing large-scale model development and multimodal capabilities.

Introducing Mistral Small 4

Introducing Mistral Small 4