Meta instructed teams to stop using Codex and Claude Code on certain tasks out of concern that model outputs could contaminate its own training data, revealing an internal tension in AI-assisted development at frontier labs.

“One memo told teams to discontinue the use of Codex and Claude code on certain tasks for fear that model outputs could contaminate training data.”

Over 90% of Anthropic's own code is now written by Claude Code.

“90 plus% of our code is actually written by cloud code.”

Claude Code's multi-agent code review feature, which traverses an entire codebase simultaneously, only became production-reliable with Opus 4.5, Opus 4.6, and Sonnet 4.6.

“It was only with like Opus 45 and 46 that we and Sonnet 4.6 that we felt like okay we are now able to like run multiple code review agents simultaneously to traverse the entirety of the codebase and to synthesize a set of like real issues that an engineer needs to address before merge.”

US software development job postings rose 15% since Claude Code launched in late February 2025, while overall job postings fell 7% in the same period. 71% of those gains came from senior roles.

“US software development job postings are up 15% since the launch of Claude Code in late February 2025, while overall job postings fell by 7% over the same period. And it's not a junior rebound. 71% of the gains came from senior roles.”

Anthropic reported that 65% of its product team code is now initiated via Claude Code from Slack rather than from the Claude app or terminal.

“Anthropic saying that 65% of its product team code was now being produced not in the Claude app or in the Claude Code terminal experience, but by initiating Claude Code from Slack.”

Claude Code (Anthropic) is worth watching as a leading indicator for software labor demand: job postings surged 15% in the months after its late February 2025 launch, skewed toward senior roles.

“US software development job postings are up 15% since the launch of Claude Code in late February 2025, while overall job postings fell by 7% over the same period.”

Anthropic worth watching: run rate revenue tripled in one quarter, net dollar retention above 500%, and over 90% of its own code now written by Claude Code

“Run rate revenue went from 9 billion to 30 billion in one quarter.”

Claude Code enabled a non-technical CFO to build a sophisticated portfolio tracking tool replacing Addepar in roughly one week, a striking demonstration of vibe-coding for finance professionals.

“He's never coded in his life. Like when I told him about Cloud Code and that he should check it out, he's like, 'I don't know how to code. Like I'm not technical.' And literally within like a week, I'm so lucky that he's the kind of person that would do this. But he built this and it's just it's insane.”

Cat Wu on the shift from chat to action as the defining product paradigm change.

“The big shift is that the 2024 generation of products were chatbased and the quad code generation of products is action-based.”

In enterprise deployments, the MCPs actually connected to Claude Code were a superset of those formally approved, revealing an MCP sprawl problem analogous to shadow IT.

“Meaning that people were connecting cloud codes to custom MCPs. And you know, connecting it via like MCP servers to the ones that maybe weren't on that.”