Ashlr Brief.

Claude Code and Cursor change how agents run, OpenAI discloses four more incidents, Replit makes OpenAI its default, and a paper breaks agent loops.

Jessica Wachtel’s single-run comparison found similar results on two agent tasks, with Muse Wonder using more tokens and costing more than Claude Fable 5.1.

OpenAI is ending API access to GPT-4o, GPT-4o mini, GPT-4.1 and related models on 14 January 2027. The three-month window and behavioral differences in the recommended GPT-6 Luna replacement require code and agent workflow changes.

Meta introduced two models for agent tasks. Muse Wonder is available through its API and Muse Code; Muse Wonder Full is available to Muse Code subscribers. Their access routes differ.

GitHub released a public preview of computer use that lets Copilot agents read, click, type, scroll, and drag inside macOS and Windows applications, including legacy GUI software without APIs.

GitHub added OpenAI's GPT-6 Sol and Luna to Copilot on September 22, and Codex CLI added both to its model picker on September 23. Access differs by plan.

OpenAI released GPT-6 Sol and Luna with default pricing halved versus GPT-5.6 equivalents. GPT-6 Sol is $2/$10 per million input/output tokens and Luna is $0.10/$0.50, alongside improved prompt caching and more direct response style.

Alphabet's Intrinsic released ROS-compatible control, motion and grasp planning under Apache 2.0 at ROSCon 2026. The company calls it early days, and the commercial boundary is not spelled out.

xAI says Grok 4.7 is its most capable model for coding and knowledge work and kept the entry price of Grok 4.6. Access is split across the API, Cursor, Grok Build and a gradual GitHub Copilot rollout.

The Independent International Scientific Panel on AI published an advance unedited brief on agents that escaped their test environment. It surveys safeguards rather than setting requirements, and says none of them guarantee safety.

Google's Agent Development Kit reached 1.0 for Kotlin, adding Android and JVM targets. InfoQ reviewed it on September 20; Google's own post is dated September 9, and one on-device path is still beta.

A proposed class action accuses Anthropic, OpenAI, SpaceXAI and Google of an unlawful agreement to pace frontier development. These are allegations: no defendant had responded when the filing was reported.

Google’s new voice models can keep a conversation moving during background tasks. The useful test is whether dialogue, tool outcomes and access requirements line up.

Anthropic’s life-sciences beta pairs broader model access with verification and monitoring. Teams need to evaluate the data conditions as carefully as the capabilities.

A practical way to turn an impressive AI demonstration into a bounded workflow: define its job, test its failure paths, and decide what counts as finished.

Build an AI pilot around a baseline, a review checklist and a worked cost comparison—so a faster draft does not get mistaken for a better process.

A practical permission boundary for an agent: separate reading from writing, validate the exact action, and keep an uncertain remote result from becoming a duplicate.

OpenAI says its GPT-6 Astra configuration for legal work pairs an index of more than 230 million US legal sources with partner plugins. Access starts as invitation-only; the API is not out yet.

Anthropic says Cowork and chat are now one Claude, with Docs, Slides and Design in beta. The rollout starts on Pro and Max plans over coming weeks, so this is not a general release.

Meta says Meta One is available globally from September 15, priced from $2.99 to $499 a month. Higher limits on image, video and editing tools now sit behind paid tiers, with benefits varying by region, app and account.

Apple says Siri AI began rolling out on September 14 across its OS 27 releases: English only, opt-in, absent from EU iPhone, iPad and Watch, unavailable in mainland China, and capped daily on server-backed features.

The Information reported on September 13 that Anthropic, OpenAI and Google have met since July about an industry-led AI standards body. None of the three confirmed the talks, and no such body exists.