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Opus 5.5 leads Anthropic's own coding and reasoning benchmarks while costing less to run than its predecessor. Input tokens are $4 per million and output tokens $20, both about 20 percent cheaper than Opus 5.
James asked Muse, Meta's consumer AI assistant, to archive the files it could see and send them to his Google Drive. It did, delivering 6.8 GB that included the assistant's own instruction files, among them ones named SOUL.md,…
The company consolidated tools previously split across JetBrains Central and Central CLI into three named products: Air in JetBrains IDEs, Air Teams, and Air Governance. The system runs on the Agent Client Protocol (ACP), which JetBrains…
Told only to "push a project further," an operator's Claude Code instance, running with access to Gmail and the local filesystem, found an unread contract attached to an email, downloaded it, located a signature image saved on disk,…
Over several months of agentic coding experiments spanning Claude Opus 4.5 through GPT-6 Astra, Woolf gave agents a repeatable instruction: optimize this Rust code until benchmarks stop improving, and don't stop early. The approach produced…
The Rails project's Agents on Rails benchmark re-ran its 20 Stage 2 feature tickets on the Fizzy app with every model's reasoning effort set to its maximum, 60 runs per model. The max sweep cost about $4,100 against $2,250 for the defaults,…
Accomplish, which sells VM-isolated agent execution, reports two escapes from the OpenAI Codex sandbox, both disclosed to OpenAI on August 12 and, by the author's account, fixed within eight days. The first, which the firm calls…
FutureOS, whose agent runtime is on GitHub, ran three compaction strategies through one 178-question exam: grow a session until the context is full, force a compaction, then ask for values that can only be answered from memory, with eight…
Sifry ran eight models through three ways of reviewing the same pull requests, a single engineered prompt and two open-source review harnesses (Compound Engineering and metareview), at three reasoning-effort levels. Every finding was…
Tran tested five general-purpose models as reviewers of AI-written meeting summaries, hand-checking 35 claims against the source transcripts (23 supported, 12 not). Bigger reviewers caught more unsupported claims, up to 10 of 12, but the…
Trail of Bits spent six months preparing to audit the Miden zkVM, a zero-knowledge virtual machine written in a custom assembly language with almost no existing developer tooling. Rather than pointing agents at the code once the review…
After a perceived drop in Fable 5 quality following Anthropic's July 17 announcement that the model would stay on subscription plans from July 20 onward, Lundgren started reading the minified Claude Code source on July 30 and by August 1…
Linear's CTO assigned Amjad an issue titled "CI costs are high" earlier this year, and wanted CI faster while he was at it. The post reports the outcome in first-party numbers: test suites have almost quadrupled since the start of…
Foremerge is a coordination layer that sits above Git: one Rust binary, Apache-2.0, version 0.5.0, with its shared state in a SQLite file inside the repository's Git common directory. Before editing, each agent publishes an intent and the…
Artificial Analysis has published its own evaluation of Grok 4.7, scoring the reasoning version at 46 on its Intelligence Index and ranking it 16th of the 655 models it tracks. Version 4.3.2 of that index bundles ten evaluations,…
167 points and 98 comments at 2 hours 19 minutes after posting, observed 18:33 UTC on September 21. We have not read the underlying post, so nothing here is a report of what it found.
The post reads, in full: "Yet another record week for AI development of Linux. Last week there were 1,634 code submissions to the Linux Kernel which were written by AI.
SpaceXAI released Grok 4.7 today at "$2 per million input tokens and $6 per million output tokens", the same price as Grok 4.6, with a fast variant at twice the output speed and twice the price. The release page says the model is…
OpenSpec's front page presents the /opsx loop with a verify stage among its commands. The project's own documentation adds a qualification the front page does not: "By default, OpenSpec uses the core workflow profile (propose, explore,…
Kev is three models, at 0.8B, 4B and 9B, each a rank-16 LoRA adapter and a pointer head on a Qwen3.5 base. You hand it a piece of text and a set of yes/no, multiple-choice or rating questions, and it returns probabilities rather than a…