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 21 Aug.
Our commitment to community safety
Learn how OpenAI protects community safety in ChatGPT through model safeguards, misuse detection, policy enforcement, and collaboration with safety experts.
Kubernetes v1.36: Mutable Pod Resources for Suspended Jobs (beta)
Kubernetes v1.36 promotes the ability to modify container resource requests and limits in the pod template of a suspended Job to beta. First introduced as alpha in v1.35, this feature allows queue controllers and cluster administrators to adjust CPU, memory, GPU, and extended resource specifications...
OpenAI available at FedRAMP Moderate
OpenAI is available at FedRAMP Moderate authorization for ChatGPT Enterprise and the OpenAI API, enabling secure AI adoption for U.S. federal agencies.
Announcing our partnership with the Republic of Korea
Google DeepMind and Korea partner to accelerate scientific breakthroughs using frontier AI models
The next phase of the Microsoft OpenAI partnership
OpenAI and Microsoft announce an amended agreement that simplifies the partnership, adds long-term clarity, and supports continued AI innovation at scale.
An open-source spec for orchestration: Symphony
Learn how Symphony, an open-source spec for Codex orchestration, turns issue trackers into always-on agent systems—boosting engineering output and reducing context switching.
Choco automates food distribution with AI agents
How Choco used OpenAI APIs to streamline food distribution, boost productivity, and unlock growth—an in-depth customer story on real-world AI impact.
How to build scalable web apps with OpenAI's Privacy Filter
Open the source for the full engineering note.
Our principles
Our mission is to ensure that AGI benefits all of humanity. Sam Altman shares five principles that guide our work.
Modeling an AI jobs transition
A new framework analyzes 921 occupations and 148 million U.S. jobs to identify which roles face automation risk, reorganization, growth, or minimal AI disruption.
Kubernetes v1.36: Fine-Grained Kubelet API Authorization Graduates to GA
On behalf of Kubernetes SIG Auth and SIG Node, we are pleased to announce the graduation of fine-grained kubelet API authorization to General Availability (GA) in Kubernetes v1.36! The KubeletFineGrainedAuthz feature gate was introduced as an opt-in alpha feature in Kubernetes v1.32, then graduated ...
Measure Less to Learn More: Using Fewer, Higher-quality Metrics to Capture What Matters
Too many experiment metrics can make meaningful changes harder to detect. Learn how Discord used simulations and Principal Component Analysis to maximize signal and reduce noise.
DeepSeek-V4: a million-token context that agents can actually use
Open the source for the full engineering note.
Toolchain Horizons: Exploring Rust Dependency-Toolchain Compatibility
I tested the top 100 Rust crates on crates.io for backwards compatibility. Then I removed every dependency from the TigerBeetle Rust client and backported it to Rust 1.39, from 2019.
Kubernetes v1.36: User Namespaces in Kubernetes are finally GA
After several years of development, User Namespaces support in Kubernetes reached General Availability (GA) with the v1.36 release. This is a Linux-only feature. For those of us working on low level container runtimes and rootless technologies, this has been a long awaited milestone. We finally reac...
GPT-5.5 System Card
Open the source for the full engineering note.
Introducing GPT-5.5
This post introduced GPT-5.5, a model built for complex tasks like coding, research, and data analysis across tools.
Everyday work with ChatGPT Work
Learn practical ChatGPT Work workflows for recurring tasks, updates, research, planning, and team operations.
How to Use Transformers.js in a Chrome Extension
Open the source for the full engineering note.
SELinux Volume Label Changes goes GA (and likely implications in v1.37)
If you run Kubernetes on Linux with SELinux in enforcing mode, plan ahead: a future release (anticipated to be v1.37) is expected to turn the SELinuxMount feature gate on by default. This makes volume setup faster for most workloads, but it can break applications that still depend on the older recur...
Making ChatGPT better for clinicians
OpenAI makes ChatGPT for Clinicians free for verified U.S. physicians, nurse practitioners, and pharmacists, supporting clinical care, documentation, and research.
Decoupled DiLoCo: A new frontier for resilient, distributed AI training
Open the source for the full engineering note.
Workspace agents
Learn how to build and use workspace agents in ChatGPT to automate repeatable workflows, connect tools, and streamline team operations.
Speeding up agentic workflows with WebSockets in the Responses API
A deep dive into the Codex agent loop, showing how WebSockets and connection-scoped caching reduced API overhead and improved model latency.
Introducing workspace agents in ChatGPT
Workspace agents in ChatGPT are Codex-powered agents that automate complex workflows, run in the cloud, and help teams scale work across tools securely.