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.
Disrupting malicious uses of AI: October 2025
Discover how OpenAI is detecting and disrupting malicious uses of AI in our October 2025 report. Learn how we’re countering misuse, enforcing policies, and protecting users from real-world harms.
Codex is now generally available
OpenAI Codex is now generally available with powerful new features for developers: a Slack integration, Codex SDK, and admin tools like usage dashboards and workspace management—making Codex easier to use and manage at scale.
Introducing apps in ChatGPT and the new Apps SDK
We’re introducing a new generation of apps you can chat with, right inside ChatGPT. Developers can start building them today with the new Apps SDK, available in preview.
AMD and OpenAI announce strategic partnership to deploy 6 gigawatts of AMD GPUs
AMD and OpenAI have announced a multi-year partnership to deploy 6 gigawatts of AMD Instinct GPUs, beginning with 1 gigawatt in 2026, to power OpenAI’s next-generation AI infrastructure and accelerate global AI innovation.
Introducing AgentKit, new Evals, and RFT for agents
Today, we’re releasing new tools to help developers go from prototype to production faster: AgentKit, expanded evals capabilities, and reinforcement fine-tuning for agents.
Accelerating AI adoption in Europe
OpenAI and Allied for Startups release the Hacktivate AI report with 20 actionable policy ideas to accelerate AI adoption in Europe, boost competitiveness, and empower innovators.
Understanding the 4 Main Approaches to LLM Evaluation (From Scratch)
Multiple-Choice Benchmarks, Verifiers, Leaderboards, and LLM Judges with Code Examples
With GPT-5, Wrtn builds lifestyle AI for millions in Korea
Wrtn scaled AI apps to 6.5M users in Korea with GPT-5, creating ‘Lifestyle AI’ that blends productivity, creativity, and learning—now expanding across East Asia.
OpenAI announces strategic collaboration with Japan’s Digital Agency
OpenAI and Japan’s Digital Agency partner to advance generative AI in public services, support international AI governance, and promote safe, trustworthy AI adoption worldwide.
SOTA OCR with Core ML and dots.ocr
Open the source for the full engineering note.
Samsung and SK join OpenAI’s Stargate initiative to advance global AI infrastructure
Samsung and SK join OpenAI’s Stargate initiative to expand global AI infrastructure, scaling advanced memory chip production and building next-gen data centers in Korea.
Operation “Nine–emdash Line”: Regional influence activity
OpenAI banned accounts linked to a previously unreprorted PRC-origin operation we dubbed "Nine-emdash Line", using AI to create regional influence content about the South China Sea, Hong Kong, and US politics.
Operation “Stop News”: Recidivist influence activity
OpenAI banned accounts linked to a Russia-origin operation we dubbed “Stop News”, using AI to generate recidivist influence content targeting Africa and the UK.
PRC-linked abuse: Surveillance and influence activity
OpenAI banned PRC-linked accounts using AI to support surveillance-related planning, targeted profiling, and research on critics and other individuals.
Cyber Operation: Korean-language malware support
OpenAI banned Korean-language accounts using AI for malware development support, debugging, phishing, and credential-theft workflows.
Cyber Operation: Phishing and scripting support
OpenAI banned accounts involved in activity that overlapped with publicly reported threat groups and displayed hallmarks consistent with PRC intelligence requirements, using AI to support phishing and scripting workflows.
Cyber Operation: Russian-speaking malware tooling
OpenAI banned accounts likely linked to Russian-speaking criminal groups, using AI to build malware loaders, evasion layers, credential-theft scripts, and C2 infrastructure.
Scam operations: Online fraud networks
OpenAI banned accounts tied to online fraud networks using AI to support scam scripts, impersonation, translation, and victim engagement.
Introducing RTEB: A New Standard for Retrieval Evaluation
Open the source for the full engineering note.
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 a...
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.
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.
Driving sales productivity and customer success at OpenAI
See how OpenAI built an internal AI sales assistant to automate account research, meeting preparation, product knowledge, and customer follow-up.
Converting inbound leads into customers at OpenAI
Learn how OpenAI used an internal AI sales assistant to qualify inbound leads, personalize responses, and help sales teams convert customer interest.
Empowering teams to unlock insights faster at OpenAI
OpenAI’s research assistant helps teams analyze millions of support tickets, surface insights faster, and scale curiosity across the company.