121
A Student's Guide to Writing with ChatGPT
Discover how students can use ChatGPT for writing, research, studying, and editing. Learn practical tips for using AI responsibly in school and beyond.
OpenAI Blog
We believe our research will eventually lead to artificial general intelligence, a system that can solve human-level problems.
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Visit openai.com → On Hacker News Dec 2015 – Nov 2026
AI & Machine Learning 211Tech Industry & Business 55Software Engineering 52Security & Privacy 22Society, Policy & Culture 15Tools & Productivity 14
122
OpenAI’s API now available with no waitlist
Wider availability made possible by safety progress.
123
Improving GPT‑5.6 Sol in ChatGPT, expanding GPT‑5.6 Luna access for free users
ChatGPT introduces improved GPT-5.6 Sol with better accuracy and consistency, plus expanded access for free users and unlimited everyday chats with GPT-5.6 Luna.
124
Attacking machine learning with adversarial examples
Adversarial examples are inputs to machine learning models that an attacker has intentionally designed to cause the model to make a mistake; they’re like optical illusions for machines. In this post we’ll show how adversarial examples work across different mediums, and will discuss why securing systems against them…
125
Retiring GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini in ChatGPT
On February 13, 2026, alongside the previously announced retirement of GPT‑5 (Instant, Thinking, and Pro), we will retire GPT‑4o, GPT‑4.1, GPT‑4.1 mini, and OpenAI o4-mini from ChatGPT. In the API, there are no changes at this time.
126
Harness engineering: Leveraging Codex in an agent-first world
By Ryan Lopopolo, Member of the Technical Staff
127
OpenAI Privacy Filter
OpenAI Privacy Filter is an open-weight model for detecting and redacting personally identifiable information (PII) in text with state-of-the-art accuracy
128
Custom instructions for ChatGPT
We’re rolling out custom instructions to give you more control over how ChatGPT responds. Set your preferences, and ChatGPT will keep them in mind for all future conversations.
129
Apple is getting this wrong
OpenAI addresses Apple’s baseless lawsuit, corrects claims about its employees, and shares messages documenting what happened.
130
How we’re responding to The NYT’s data demands in order to protect user privacy
OpenAI is fighting a court order at the demands of The New York Times and plaintiffs, which involves retention of consumer ChatGPT and API user data indefinitely. Learn how we’re working to uphold user privacy, address legal requirements, and stay true to our data protection commitments.
131
Why language models hallucinate
OpenAI’s new research explains why language models hallucinate. The findings show how improved evaluations can enhance AI reliability, honesty, and safety.
132
Infrastructure for Deep Learning
Deep learning is an empirical science, and the quality of a group’s infrastructure is a multiplier on progress. Fortunately, today’s open-source ecosystem makes it possible for anyone to build great deep learning infrastructure.
133
Why OpenAI's Structure Must Evolve to Advance Our Mission
A stronger non-profit supported by the for-profit’s success.
134
Image GPT
We find that, just as a large transformer model trained on language can generate coherent text, the same exact model trained on pixel sequences can generate coherent image completions and samples. By establishing a correlation between sample quality and image classification accuracy, we show that our best generative…
135
Our approach to advertising
OpenAI plans to test advertising in the U.S. for ChatGPT’s free and Go tiers to expand affordable access to AI worldwide, while protecting privacy, trust, and answer quality.
136
Scaling Git at OpenAI
How OpenAI built Pando, a Git-compatible backend designed for the scale of development that Codex makes possible.
137
The Walt Disney Company and OpenAI Partner on Sora
Disney and OpenAI have reached an agreement to bring more than 200 Disney, Marvel, Pixar and Star Wars characters to Sora for fan-inspired short videos. The agreement emphasizes responsible AI in entertainment and includes Disney’s company-wide use of ChatGPT Enterprise and the OpenAI API.
138
OpenAI LP
We’ve created OpenAI LP, a new “capped-profit” company that allows us to rapidly increase our investments in compute and talent while including checks and balances to actualize our mission.
139
Patch the Planet: global response coordination as agents uncover vulnerabilities
Patch the Planet connects security researchers, maintainers, and incident responders to help address critical vulnerabilities across open source.
140
OpenAI Releases Largest GPT-2 Text Generation Model
As the final model release of GPT-2’s staged release, we’re releasing the largest version (1.5B parameters) of GPT-2 along with code and model weights to facilitate detection of outputs of GPT-2 models. While there have been larger language models released since August, we’ve continued with our original staged release…
141
OpenAI to acquire Pierre Computer Company
OpenAI will acquire Pierre Computer Company, expanding Codex’s tools for building, understanding, and reviewing code.
142
Testing Ads in ChatGPT
OpenAI begins testing ads in ChatGPT to support free access, with clear labeling, answer independence, strong privacy protections, and user control.
143
CriticGPT: Finding GPT-4's mistakes with GPT-4
CriticGPT, a model based on GPT-4, writes critiques of ChatGPT responses to help human trainers spot mistakes during RLHF
144
Expanding on what we missed with sycophancy
A deeper dive on our findings, what went wrong, and future changes we’re making.
145
OpenAI acquires Sky.app
OpenAI has acquired Software Applications Incorporated, maker of Sky—a natural language interface for Mac that brings AI directly into your desktop experience. Together, we’re integrating Sky’s deep macOS capabilities into ChatGPT to make AI more intuitive, contextual, and action-oriented.
146
Addendum to GPT-5 system card: GPT-5-Codex
This addendum to the GPT-5 system card shares a new model: GPT-5-Codex, a version of GPT-5 further optimized for agentic coding in Codex. GPT-5-Codex adjusts its thinking effort more dynamically based on task complexity, responding quickly to simple conversational queries or small tasks, while independently working…
147
148
Instant Checkout and the Agentic Commerce Protocol
We’re taking first steps toward agentic commerce in ChatGPT with new ways for people, AI agents, and businesses to shop together.
149
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.
150
OpenAI Acquires TBPN
OpenAI acquires TBPN to accelerate global conversations around AI and support independent media, expanding dialogue with builders, businesses, and the broader tech community.