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 23 Aug.
Doom GPU Flame Graphs
AI Flame Graphs are now open source and include Intel Battlemage GPU support, which means it can also generate full-stack GPU flame graphs for providing new insights into gaming performance, especially when coupled with FlameScope (an older open source project of mine). Here's an example of GZDoom, ...
How to Build an MCP Server with Gradio
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The 4 Things Qwen-3’s Chat Template Teaches Us
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Sycophancy in GPT-4o: what happened and what we’re doing about it
We have rolled back last week’s GPT‑4o update in ChatGPT so people are now using an earlier version with more balanced behavior. The update we removed was overly flattering or agreeable—often described as sycophantic.
Easily turn any gRPC service into an MCP server
Redpanda is simplifying how AI agents and apps interact with our APIs. Meet our latest open-source tool that turns gRPC APIs into MCP servers.
Welcoming Llama Guard 4 on Hugging Face Hub
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Introducing AutoRound: Intel’s Advanced Quantization for LLMs and VLMs
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PipelineRL
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Tiny Agents: an MCP-powered agent in 50 lines of code
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How Discord Indexes Trillions of Messages
Learn how Discord scaled its search infrastructure to index trillions of messages and unlock new features.
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.
Discord Appoints Humam Sakhnini as Chief Executive Officer
Discord names Humam Sakhnini as the company’s new CEO as co-founder Jason Citron remains on the board and transitions to CEO advisor.
Passing the Torch
Read the message sent to Discord employees from CEO Jason Citron sharing his decision to transition out of the role and appoint Humam Sakhnini as the company's new chief executive.
Need for speed: 9 tips to supercharge Redpanda
Redpanda is fast, but to get it running at full speed, you need to make sure you’re optimizing your infrastructure, data architecture, and application design. Here’s how to do it.
Swarm Testing Data Structures
We discovered a cute little pattern the other day when refactoring TigerBeetle’s intrusive queue — using Zig’s comptime reflection for exhaustively testing data structure’s public API. Isn’t it cool when your property test fails when you add a new API, because “public API is tested” is one of the pr...
Finetuning olmOCR to be a faithful OCR-Engine
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Speak is personalizing language learning with AI
A conversation with Connor Zwick, CEO & Co-founder of Speak.
The Washington Post partners with OpenAI on search content
The Washington Post is partnering with with OpenAI to integrate news into ChatGPT, providing users with summaries, quotes, and direct links to original reporting.
Worthy of a Plaque: Nameplates Land in the Shop
Today, we’re announcing a brand new way to express yourself: Nameplates. Add a pop of personality to your display name when it’s shown in your favorite chat channels. Read on to see how they work!
Prefill and Decode for Concurrent Requests - Optimizing LLM Performance
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Introducing OpenAI o3 and o4-mini
Our smartest and most capable models to date with full tool access
OpenAI o3 and o4-mini System Card
OpenAI o3 and OpenAI o4-mini combine state-of-the-art reasoning with full tool capabilities—web browsing, Python, image and file analysis, image generation, canvas, automations, file search, and memory.
Thinking with images
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17 Reasons Why Gradio Isn't Just Another UI Library
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