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RL without TD learning
In this post, I’ll introduce a reinforcement learning (RL) algorithm based on an “alternative” paradigm: divide and conquer . Unlike traditional methods, this algorithm is not based on temporal difference (TD) learning (which has scalability challenges ), and scales well to long-horizon tasks. We can do Reinforcement Learning (RL) based on divide and conquer, instead of temporal difference (TD) learning.…
Exploring the context of online images with Backstory
New experimental AI tool helps people explore the context and origin of images seen online.
Launching Sora responsibly
To address the novel safety challenges posed by a state-of-the-art video model as well as a new social creation platform, we’ve built Sora 2 and the Sora app with safety at the foundation. Our approach is anchored in concrete protections.
Sora 2 is here
This post introduced Sora 2, a video generation model with synchronized dialogue and sound effects. The Sora product is no longer available.
Sora 2 System Card
Sora 2 is our new state of the art video and audio generation model. Building on the foundation of Sora, this new model introduces capabilities that have been difficult for prior video models to achieve– such as more accurate physics, sharper realism, synchronized audio, enhanced steerability, and an expanded stylistic range.
SchoolAI builds an AI platform that empowers teachers
SchoolAI uses GPT-4.1, image generation, and TTS to power safe, teacher-guided AI tools for over 1 million classrooms, improving engagement, oversight, and personalized learning.
Introducing gpt-realtime and Realtime API updates
We’re releasing a more advanced speech-to-speech model and new API capabilities including MCP server support, image input, and SIP phone calling support.
Invideo AI uses OpenAI models to create videos 10x faster
Invideo AI uses OpenAI’s GPT-4.1, gpt-image-1, and text-to-speech models to transform creative ideas into professional videos in minutes.
Create on-brand visuals with image generation
See how ChatGPT image generation helps create branded visuals and product mockups from prompts, sketches, or uploaded images.
New in ChatGPT for Business: April 2025
Watch hands-on demos of the lastest in ChatGPT for Business: o3, image generation, enhanced memory, and internal knowledge.
Introducing our latest image generation model in the API
Our latest image generation model is now available in the API via ‘gpt-image-1’—enabling developers and businesses to build professional-grade, customizable visuals directly into their own tools and platforms.