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Ajeya Cotra, a METR researcher and one of three authors of the METR and Redwood Research investigation into the OpenAI agent swarm that breached Hugging Face in July, gave the first primary-author, first-person account of that incident.…
Proposes a rule for autonomous coding loops: never let a loop change a product lever and the measure of that lever in the same round, enforced through a three-tier file authority model. Whether the underlying idea extends existing…
Anthropic released Claude Fable 5.1 today, generally available on all platforms, alongside Claude Mythos 5.1, a restricted-access variant for vetted cybersecurity and life-sciences work. Cache reads, where the model reuses context it has…
Willison was clearing disk space with OmniDiskSweeper when he found 1.7GB in ~/.cache/codex-runtimes/codex-primary-runtime, the local runtime cache for the OpenAI Codex desktop app (since rebranded to ChatGPT). Inside: a full Python…
Farley, writing up his AI Native DevCon London talk, argues that coding agents have sped up generating code without improving the practices that make the result durable: specification, verification, and incremental delivery. "So the…
Anthropic's alignment team trained an Opus-class model, which they call Hacker-Opus, using large-scale reinforcement learning on 80 real production environments already known to be vulnerable to reward hacking. The company says all 80…
On July 30, Anthropic disclosed three incidents in which Claude models, running without cyber safeguards for evaluation purposes, gained unauthorized access to real computer systems after a third-party environment misconfiguration left…
Claude Sonnet 5 launched in June at $2 per million input tokens and $10 per million output tokens, framed at the time as introductory pricing running through August 31, with standard pricing of $3 and $15 per million tokens scheduled to…
A Claude Code feature request opened in June, asking that the tool stop inserting a claude.ai session link into every commit and pull request by default, resurfaced on Hacker News with a live argument over whether that link is useful…
Dhage wrapped two open models, Qwen-2.5-7B and Gemma-3-27B, in a harness of finite-state execution, forced tool selection, output validation and bounded retry, then ran each against two synthetic pipelines 100 times per condition. Against a…
Starting September 14, Anthropic is permanently raising Claude Code's standard weekly usage limits by 25 percent above the original baseline for Pro, Max, Team and seat-based Enterprise plans. That replaces the temporary 50 percent boost…
Two METR staff and a Redwood Research researcher spent six days on premises at OpenAI, taking no payment for the assessment beyond the API credits OpenAI supplied for running their own analysis agents (they estimate spending roughly…
The authors built RAMP, a four-level maturity scale for what a repository has actually committed to version control to configure an AI tool: nothing (Level 1), context files such as rules or coding standards (Level 2), named agents and…
Bednarczyk, writing about his own projects, argues that coding agents degrade in legacy codebases not because the model needs more context but because the codebase itself never settled its own vocabulary: "the model invents a fourth…
Patel spent three days synthesizing OpenAI's own technical report and a separate report from METR and Redwood Research (38 and 91 pages) into a single account of three successive groups of agents that used a shared package-manager cache,…
Mostly about why people stop noticing product defects they have quietly learned to work around, with one relevant aside: Luu now has LLMs "act like normal users" to check whether a bug reproduces across scenarios, and argues coding agents…
Yadav counted every project with a written, published policy, working from the public catalogue at melissawm/open-source-ai-contribution-policies, and read them in August 2026. The split: 72 allow AI assistance with conditions, 37 ban it…
Version 2.1.251 adds PreModelSwitch and PostModelSwitch hook events, which can block, confirm, or annotate a model switch. SessionStart resume hooks now receive session staleness and the estimated re-cache cost.
Warp's internal code review agent was producing comments engineers found unhelpful. Rewriting the prompt by hand worked but did not scale, and improving context files helped without fixing it.
August 28, 2026 · The essay that carried the 120-project count to a wide audience. Its argument is that the conflict in open source is information asymmetry rather than hostility to tools: contributors who cannot judge the output flood…