Field Signal · Curated Reading
The Engineering
Signal.
High-signal field notes, architecture teardowns, and engineering writing from 50 publications. A focused reading queue for becoming a stronger end-to-end engineer. Updated 22 Aug.
From GPT-2 to gpt-oss: Analyzing the Architectural Advances
And How They Stack Up Against Qwen3
Introducing AI Sheets: a tool to work with datasets using open AI models!
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Accelerate ND-Parallel: A guide to Efficient Multi-GPU Training
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Introducing GPT-5 for developers
Introducing GPT-5 in our API platform—offering high reasoning performance, new controls for devs, and best-in-class results on real coding tasks.
GPT-5 and the new era of work
GPT-5 is OpenAI’s most advanced model—transforming enterprise AI, automation, and workforce productivity in the new era of intelligent work.
Coding and design with GPT-5
Learn how GPT-5 unlocks new possibilities in coding and design.
Creative writing with GPT-5
Learn how GPT-5 assists with creative writing.
Medical research with GPT-5
Learn how GPT-5 is used for medical research.
From hard refusals to safe-completions: toward output-centric safety training
Discover how OpenAI's new safe-completions approach in GPT-5 improves both safety and helpfulness in AI responses—moving beyond hard refusals to nuanced, output-centric safety training for handling dual-use prompts.
GPT-5 System Card
This GPT-5 system card explains how a unified model routing system powers fast and smart responses using gpt-5-main, gpt-5-thinking, and lightweight versions like gpt-5-thinking-nano, optimized for different tasks and developer use.
First look at GPT-5
See how a group of leading developers use GPT-5 for the first time.
Introducing GPT-5
We are introducing GPT‑5, our best AI system yet. GPT‑5 is a significant leap in intelligence over all our previous models, featuring state-of-the-art performance across coding, math, writing, health, visual perception, and more.
How Amgen uses GPT-5
Learn how Amgen uses GPT-5.
How Cursor uses GPT-5
Learn how Cursor uses GPT-5.
Vision Language Model Alignment in TRL ⚡️
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Providing ChatGPT to the Entire U.S. Federal Workforce
Today, OpenAI for Government is announcing a new partnership with the U.S. General Services Administration (GSA) to launch a transformative initiative. For the next year, ChatGPT Enterprise will be available to the entire federal executive branch workforce at essentially no cost.
Estimating worst case frontier risks of open weight LLMs
In this paper, we study the worst-case frontier risks of releasing gpt-oss. We introduce malicious fine-tuning (MFT), where we attempt to elicit maximum capabilities by fine-tuning gpt-oss to be as capable as possible in two domains: biology and cybersecurity.
Introducing gpt-oss
We’re releasing gpt-oss-120b and gpt-oss-20b—two state-of-the-art open-weight language models that deliver strong real-world performance at low cost. Available under the flexible Apache 2.0 license, these models outperform similarly sized open models on reasoning tasks, demonstrate strong tool use c...
gpt-oss-120b & gpt-oss-20b Model Card
We introduce gpt-oss-120b and gpt-oss-20b, two open-weight reasoning models available under the Apache 2.0 license and our gpt-oss usage policy.
Open Weights and AI for All
AI’s next frontier isn’t just about capability—it’s about who gets to use it. Our mission to put AI in the hands of as many people as possible is what drives us. Today’s release of our most capable open-weights models is a major step forward that makes advanced AI more open, flexible, and accessible...
Welcome GPT OSS, the new open-source model family from OpenAI!
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Measuring Open-Source Llama Nemotron Models on DeepResearch Bench
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What we’re optimizing ChatGPT for
We build ChatGPT to help you thrive in all the ways you want. Learn how we’re improving support for tough moments, have rolled out reminders to take breaks, and are working on better life advice, all guided by expert input.
📚 3LM: A Benchmark for Arabic LLMs in STEM and Code
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Figma uses AI to transform digital design
Discover how Figma is transforming digital design with AI. David Kossnick shares how tools like Figma Make empower teams to prototype, collaborate, and build with AI—reshaping workflows for designers, developers, and non-technical creators alike.