I put together these annotated slides from my five minute lightning talk at PyCon US 2026, using the latest iteration of my annotated presentation tool.
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I presented this lightning talk at PyCon US 2026, attempting to summarize the last …
Announcing coding harness tracing for observing, evaluating, and improving coding agent workflows across Claude Code, Cursor, Codex, GitHub Copilot, and Gemini CLI.
The post Coding agent tracing and evaluation: An open source tool to improve AI coding workflows appeared first on Arize AI.
Coding Agent Index is the first independent benchmark of full agent stacks. What it measures, what it doesn’t cover, and how to evaluate…Continue reading on Medium »
This Mitchell Hashimoto quote about Bun migrating from Zig to Rust reminded me of a similar conversation I had at a conference last week.
I was talking to someone who worked for a medium sized technology company with a pair of legacy/legendary iPh…
GitLab Act 2
There’s a lot going on in this announcement from GitLab about the “workforce reduction” and “structural and strategic decisions” they are making with respect to the agentic era.
They’re “planning to reduce the number of countries by…
Your AI coding agent, the one you use to write code, needs to reduce your maintenance costs. Not by a little bit, either. You write code twice as quick now? Better hope you’ve halved your maintenance costs. Three times as productive? One third the…
Learning on the Shop floor
Tobias Lütke describes Shopify’s internal coding agent tool, River, which operates entirely in public on their Slack:
River does not respond to direct messages. She politely declines and suggests to create a public cha…
As agents start changing software, they need a way to verify their work that includes traces, evals, feedback, and APIs. This is where Phoenix goes next — not the next release, but what this product becomes.
The post From observability to context: What’s next for Arize Phoenix appeared first on Arize AI.
I recently talked with Joseph Ruscio about AI coding tools for Heavybit’s High Leverage podcast: Ep. #9, The AI Coding Paradigm Shift with Simon Willison. Here are some of my highlights, including my disturbing realization that vibe coding and age…
Codex CLI 0.128.0 adds /goal
The latest version of OpenAI’s Codex CLI coding agent adds their own version of the Ralph loop: you can now set a /goal and Codex will keep on looping until it evaluates that the goal has been completed… or the conf…